feat: add annotations, user profiles, watchers, stories, search and more

backend/migrations/versions/a9c3e7f1d2b4_media_unique_id.py

@@ -0,0 +1,27 @@
+"""media unique_id for edit detection
+
+Revision ID: a9c3e7f1d2b4
+Revises: f7a2c9e1b3d5
+Create Date: 2026-05-30 04:00:00.000000
+
+"""
+
+from collections.abc import Sequence
+
+import sqlalchemy as sa
+from alembic import op
+
+revision: str = "a9c3e7f1d2b4"
+down_revision: str | None = "f7a2c9e1b3d5"
+branch_labels: str | Sequence[str] | None = None
+depends_on: str | Sequence[str] | None = None
+
+
+def upgrade() -> None:
+    op.add_column("media", sa.Column("unique_id", sa.String(), nullable=True))
+    op.add_column("media_versions", sa.Column("unique_id", sa.String(), nullable=True))
+
+
+def downgrade() -> None:
+    op.drop_column("media_versions", "unique_id")
+    op.drop_column("media", "unique_id")

backend/migrations/versions/c4e8a1f7d9b2_custom_emoji.py

@@ -0,0 +1,42 @@
+"""custom emoji documents
+
+Revision ID: c4e8a1f7d9b2
+Revises: a9c3e7f1d2b4
+Create Date: 2026-05-31 12:00:00.000000
+
+"""
+
+from collections.abc import Sequence
+
+import sqlalchemy as sa
+from alembic import op
+from sqlalchemy.dialects import postgresql
+
+revision: str = "c4e8a1f7d9b2"
+down_revision: str | None = "a9c3e7f1d2b4"
+branch_labels: str | Sequence[str] | None = None
+depends_on: str | Sequence[str] | None = None
+
+
+def upgrade() -> None:
+    op.create_table(
+        "custom_emoji",
+        sa.Column("custom_emoji_id", sa.BigInteger(), nullable=False),
+        sa.Column("storage_key", sa.String(), nullable=True),
+        sa.Column("file_size", sa.BigInteger(), nullable=True),
+        sa.Column("mime", sa.String(), nullable=True),
+        sa.Column("kind", sa.String(), nullable=True),
+        sa.Column("downloaded", sa.Boolean(), nullable=False),
+        sa.Column("raw", postgresql.JSONB(astext_type=sa.Text()), nullable=False),
+        sa.Column(
+            "first_seen_at",
+            sa.DateTime(timezone=True),
+            server_default=sa.text("now()"),
+            nullable=False,
+        ),
+        sa.PrimaryKeyConstraint("custom_emoji_id"),
+    )
+
+
+def downgrade() -> None:
+    op.drop_table("custom_emoji")

backend/migrations/versions/d5f9b2c8e3a1_dialogs.py

@@ -0,0 +1,36 @@
+"""dialogs
+
+Revision ID: d5f9b2c8e3a1
+Revises: c4e8a1f7d9b2
+Create Date: 2026-05-31 18:00:00.000000
+
+"""
+
+from collections.abc import Sequence
+
+import sqlalchemy as sa
+from alembic import op
+
+revision: str = "d5f9b2c8e3a1"
+down_revision: str | None = "c4e8a1f7d9b2"
+branch_labels: str | Sequence[str] | None = None
+depends_on: str | Sequence[str] | None = None
+
+
+def upgrade() -> None:
+    op.create_table(
+        "dialogs",
+        sa.Column("account_id", sa.BigInteger(), nullable=False),
+        sa.Column("chat_id", sa.BigInteger(), nullable=False),
+        sa.Column(
+            "updated_at",
+            sa.DateTime(timezone=True),
+            server_default=sa.text("now()"),
+            nullable=False,
+        ),
+        sa.PrimaryKeyConstraint("account_id", "chat_id"),
+    )
+
+
+def downgrade() -> None:
+    op.drop_table("dialogs")

backend/migrations/versions/f7a2c9e1b3d5_media_versions.py

@@ -0,0 +1,56 @@
+"""media versions (keep every edited media)
+
+Revision ID: f7a2c9e1b3d5
+Revises: a3f1c8e94d72
+Create Date: 2026-05-30 03:00:00.000000
+
+"""
+
+from collections.abc import Sequence
+
+import sqlalchemy as sa
+from alembic import op
+
+revision: str = "f7a2c9e1b3d5"
+down_revision: str | None = "a3f1c8e94d72"
+branch_labels: str | Sequence[str] | None = None
+depends_on: str | Sequence[str] | None = None
+
+
+def upgrade() -> None:
+    op.create_table(
+        "media_versions",
+        sa.Column("id", sa.BigInteger(), autoincrement=True, nullable=False),
+        sa.Column("account_id", sa.Integer(), nullable=False),
+        sa.Column("chat_id", sa.BigInteger(), nullable=False),
+        sa.Column("message_id", sa.BigInteger(), nullable=False),
+        sa.Column(
+            "observed_at",
+            sa.DateTime(timezone=True),
+            server_default=sa.text("now()"),
+            nullable=False,
+        ),
+        sa.Column("kind", sa.String(), nullable=False),
+        sa.Column("storage_key", sa.String(), nullable=False),
+        sa.Column("file_size", sa.BigInteger(), nullable=True),
+        sa.Column("mime", sa.String(), nullable=True),
+        sa.Column("ttl_seconds", sa.Integer(), nullable=True),
+        sa.PrimaryKeyConstraint("id"),
+        sa.UniqueConstraint(
+            "account_id",
+            "chat_id",
+            "message_id",
+            "storage_key",
+            name="uq_media_versions_content",
+        ),
+    )
+    op.create_index(
+        "ix_media_versions_message",
+        "media_versions",
+        ["account_id", "chat_id", "message_id", "observed_at"],
+    )
+
+
+def downgrade() -> None:
+    op.drop_index("ix_media_versions_message", table_name="media_versions")
+    op.drop_table("media_versions")

backend/src/api/app.py

@@ -1,25 +1,35 @@
 from collections.abc import AsyncGenerator
 from contextlib import asynccontextmanager
+from pathlib import Path
 
 import asyncpg
 from dishka.integrations.fastapi import DishkaRoute, FromDishka, setup_dishka
 from fastapi import FastAPI
+from fastapi.responses import FileResponse
 from fastmcp.utilities.lifespan import combine_lifespans
 from starlette.applications import Starlette
 
 from api.auth import BearerAuthMiddleware
 from api.mcp.server import mcp
+from api.realtime import hub
 from api.routers import (
+    accounts,
+    analytics,
     annotations,
+    avatars,
     backfill,
     chats,
+    custom_emoji,
+    events,
     folders,
     media,
     peers,
     policy,
     presence,
+    profile,
     search,
     social,
+    stories,
     watches,
 )
 from dependencies.container import container
@@ -35,7 +45,10 @@ mcp_app = mcp.http_app(path="/")
 
 @asynccontextmanager
 async def lifespan(app_: Starlette) -> AsyncGenerator[None]:
+    pool = await container.get(asyncpg.Pool)
+    await hub.start(pool)
     yield
+    await hub.stop()
     await app_.state.dishka_container.close()
 
 
@@ -54,20 +67,39 @@ async def health(pool: FromDishka[asyncpg.Pool]) -> dict[str, bool]:
     return {"db": db_ok, "timescaledb": bool(timescale_ok)}
 
 
+app.include_router(accounts.router)
+app.include_router(analytics.router)
 app.include_router(policy.router)
 app.include_router(folders.router)
 app.include_router(backfill.router)
 app.include_router(search.router)
 app.include_router(chats.router)
 app.include_router(media.router)
+app.include_router(avatars.router)
+app.include_router(custom_emoji.router)
 app.include_router(social.router)
 app.include_router(presence.router)
+app.include_router(stories.router)
+app.include_router(profile.router)
+app.include_router(events.router)
 app.include_router(peers.router)
 app.include_router(annotations.router)
 app.include_router(watches.router)
 
 app.mount("/mcp", mcp_app)
 
+_spa_dir = Path(env.api.static_dir).resolve()
+if _spa_dir.is_dir():
+    _spa_index = _spa_dir / "index.html"
+
+    @app.get("/{spa_path:path}")
+    async def serve_spa(spa_path: str) -> FileResponse:
+        candidate = (_spa_dir / spa_path).resolve()
+        if spa_path and candidate.is_relative_to(_spa_dir) and candidate.is_file():
+            return FileResponse(candidate)
+        return FileResponse(_spa_index)
+
+
 app.add_middleware(BearerAuthMiddleware, token=_token)
 
 setup_dishka(container, app)

backend/src/api/realtime.py

@@ -0,0 +1,123 @@
+import asyncio
+import json
+import logging
+from typing import Any
+
+import asyncpg
+
+from utils.env import env
+from utils.events import BG_EVENTS_CHANNEL
+from utils.read import chats as chats_read
+from utils.read import presence as presence_read
+
+logger = logging.getLogger(__name__)
+
+QUEUE_MAXSIZE = 256
+
+
+class Subscriber:
+    def __init__(self, account_id: int, chat_id: int | None) -> None:
+        self.account_id = account_id
+        self.chat_id = chat_id
+        self.queue: asyncio.Queue[dict[str, Any]] = asyncio.Queue(maxsize=QUEUE_MAXSIZE)
+
+
+class EventHub:
+    def __init__(self) -> None:
+        self._subscribers: set[Subscriber] = set()
+        self._pool: asyncpg.Pool | None = None
+        self._conn: asyncpg.Connection | None = None
+        self._tasks: set[asyncio.Task] = set()
+
+    def subscribe(self, account_id: int, chat_id: int | None) -> Subscriber:
+        sub = Subscriber(account_id, chat_id)
+        self._subscribers.add(sub)
+        return sub
+
+    def unsubscribe(self, sub: Subscriber) -> None:
+        self._subscribers.discard(sub)
+
+    async def start(self, pool: asyncpg.Pool) -> None:
+        self._pool = pool
+        conn = await asyncpg.connect(dsn=env.db.connection_url)
+        await conn.add_listener(BG_EVENTS_CHANNEL, self._on_notify)
+        self._conn = conn
+        logger.info("Realtime hub listening on %s", BG_EVENTS_CHANNEL)
+
+    async def stop(self) -> None:
+        for task in self._tasks:
+            task.cancel()
+        if self._conn is not None:
+            await self._conn.close()
+            self._conn = None
+
+    def _on_notify(
+        self, _conn: asyncpg.Connection, _pid: int, _channel: str, payload: str
+    ) -> None:
+        task = asyncio.create_task(self._dispatch(payload))
+        self._tasks.add(task)
+        task.add_done_callback(self._tasks.discard)
+
+    async def _dispatch(self, payload: str) -> None:
+        try:
+            event = json.loads(payload)
+        except json.JSONDecodeError:
+            return
+        account_id = event.get("account_id")
+        chat_id = event.get("chat_id")
+        targets = [
+            sub
+            for sub in self._subscribers
+            if sub.account_id == account_id
+            and (sub.chat_id is None or sub.chat_id == chat_id)
+        ]
+        if not targets:
+            return
+        frame = await self._build_frame(event)
+        if frame is None:
+            return
+        for sub in targets:
+            try:
+                sub.queue.put_nowait(frame)
+            except asyncio.QueueFull:
+                logger.warning("Dropping event for slow subscriber")
+
+    async def _build_frame(  # noqa: PLR0911
+        self, event: dict[str, Any]
+    ) -> dict[str, Any] | None:
+        if self._pool is None:
+            return None
+        kind = event.get("kind")
+        account_id = event["account_id"]
+        if kind in {"message", "edit", "reaction"}:
+            view = await chats_read.get_message(
+                self._pool, account_id, event["chat_id"], event["message_id"]
+            )
+            if view is None:
+                return None
+            return {"type": kind, "message": view.model_dump(mode="json")}
+        if kind == "delete":
+            return {
+                "type": "delete",
+                "chat_id": event.get("chat_id"),
+                "message_ids": event.get("message_ids", []),
+            }
+        if kind == "presence":
+            sample = await presence_read.current_presence(
+                self._pool, account_id, event["chat_id"]
+            )
+            return {
+                "type": "presence",
+                "peer_id": event["chat_id"],
+                "sample": sample.model_dump(mode="json") if sample else None,
+            }
+        if kind == "receipt":
+            return {
+                "type": "receipt",
+                "chat_id": event["chat_id"],
+                "read_up_to": event["message_id"],
+            }
+        return None
+
+
+hub = EventHub()

backend/src/api/routers/accounts.py

@@ -0,0 +1,13 @@
+import asyncpg
+from dishka.integrations.fastapi import DishkaRoute, FromDishka
+from fastapi import APIRouter
+
+from utils.read import accounts
+from utils.read.models import AccountView
+
+router = APIRouter(prefix="/api", tags=["accounts"], route_class=DishkaRoute)
+
+
+@router.get("/accounts")
+async def list_accounts(pool: FromDishka[asyncpg.Pool]) -> list[AccountView]:
+    return await accounts.list_accounts(pool)

backend/src/api/routers/analytics.py

@@ -0,0 +1,30 @@
+from typing import Annotated
+
+import asyncpg
+from dishka.integrations.fastapi import DishkaRoute, FromDishka
+from fastapi import APIRouter, Query
+
+from utils.read import analytics
+from utils.read.models import ResponseStats, VolumeBucket
+
+router = APIRouter(prefix="/api/analytics", tags=["analytics"], route_class=DishkaRoute)
+
+AccountId = Annotated[int, Query()]
+ChatId = Annotated[int, Query()]
+
+
+@router.get("/volume")
+async def volume(
+    pool: FromDishka[asyncpg.Pool],
+    account_id: AccountId,
+    chat_id: ChatId,
+    days: Annotated[int, Query()] = 90,
+) -> list[VolumeBucket]:
+    return await analytics.message_volume(pool, account_id, chat_id, days=days)
+
+
+@router.get("/response-time")
+async def response_time(
+    pool: FromDishka[asyncpg.Pool], account_id: AccountId, chat_id: ChatId
+) -> ResponseStats:
+    return await analytics.response_stats(pool, account_id, chat_id)

backend/src/api/routers/avatars.py

@@ -0,0 +1,56 @@
+from typing import Annotated
+
+import asyncpg
+from dishka.integrations.fastapi import DishkaRoute, FromDishka
+from fastapi import APIRouter, HTTPException, Query
+from fastapi.responses import FileResponse
+
+from utils.jobs import enqueue
+from utils.read.avatars import avatar_by_unique_id, avatar_history, current_avatar
+from utils.read.models import AvatarHistoryView
+from utils.storage import ContentAddressedStorage
+
+router = APIRouter(prefix="/api/avatars", tags=["avatars"], route_class=DishkaRoute)
+
+
+@router.get("/{owner_kind}/{owner_id}/history")
+async def serve_avatar_history(
+    pool: FromDishka[asyncpg.Pool],
+    owner_kind: str,  # noqa: ARG001
+    owner_id: int,
+    account_id: Annotated[int, Query()],
+) -> list[AvatarHistoryView]:
+    return await avatar_history(pool, account_id, owner_id)
+
+
+@router.get("/{owner_kind}/{owner_id}")
+async def serve_avatar(
+    pool: FromDishka[asyncpg.Pool],
+    storage: FromDishka[ContentAddressedStorage],
+    owner_kind: str,
+    owner_id: int,
+    account_id: Annotated[int, Query()],
+    unique_id: Annotated[str | None, Query()] = None,
+) -> FileResponse:
+    avatar = (
+        await avatar_by_unique_id(pool, account_id, owner_id, unique_id)
+        if unique_id is not None
+        else await current_avatar(pool, account_id, owner_kind, owner_id)
+    )
+    if avatar is None:
+        raise HTTPException(status_code=404, detail="avatar not found")
+    if not avatar.downloaded or avatar.storage_key is None:
+        await enqueue(
+            pool,
+            account_id,
+            "fetch_avatar",
+            {
+                "owner_kind": owner_kind,
+                "owner_id": owner_id,
+                "unique_id": avatar.unique_id,
+            },
+        )
+        raise HTTPException(status_code=409, detail="avatar not downloaded; fetching")
+    return FileResponse(
+        storage.url(avatar.storage_key), media_type=avatar.mime or "image/jpeg"
+    )

backend/src/api/routers/backfill.py

@@ -24,6 +24,10 @@ class FetchMediaRequest(BaseModel):
     message_id: int
 
 
+class SyncDialogsRequest(BaseModel):
+    account_id: int
+
+
 class EnqueueResponse(BaseModel):
     job_id: int
 
@@ -78,6 +82,14 @@ async def enqueue_fetch_media(
     return EnqueueResponse(job_id=job_id)
 
 
+@router.post("/dialogs/sync", status_code=201)
+async def enqueue_sync_dialogs(
+    pool: FromDishka[asyncpg.Pool], body: SyncDialogsRequest
+) -> EnqueueResponse:
+    job_id = await enqueue(pool, body.account_id, "sync_dialogs", {})
+    return EnqueueResponse(job_id=job_id)
+
+
 @router.get("/jobs")
 async def list_jobs(
     pool: FromDishka[asyncpg.Pool],

backend/src/api/routers/chats.py

@@ -3,7 +3,9 @@ from typing import Annotated
 import asyncpg
 from dishka.integrations.fastapi import DishkaRoute, FromDishka
 from fastapi import APIRouter, Query
+from pydantic import BaseModel
 
+from utils.jobs import enqueue
 from utils.read import chats
 from utils.read.models import (
     DEFAULT_LIMIT,
@@ -11,10 +13,17 @@ from utils.read.models import (
     MessageVersionView,
     MessageView,
     Page,
+    PinnedView,
 )
+from utils.read.pinned import get_pinned
 
 router = APIRouter(prefix="/api", tags=["chats"], route_class=DishkaRoute)
 
+
+class EnrichRequest(BaseModel):
+    account_id: int
+
+
 AccountId = Annotated[int, Query()]
 Limit = Annotated[int, Query()]
 Offset = Annotated[int, Query()]
@@ -38,6 +47,8 @@ async def chat_history(
     limit: Limit = DEFAULT_LIMIT,
     offset: Offset = 0,
     include_deleted: Annotated[bool, Query()] = True,
+    before_id: Annotated[int | None, Query()] = None,
+    after_id: Annotated[int | None, Query()] = None,
 ) -> list[MessageView]:
     return await chats.get_chat_history(
         pool,
@@ -45,9 +56,26 @@ async def chat_history(
         chat_id,
         Page(limit=limit, offset=offset),
         include_deleted=include_deleted,
+        before_id=before_id,
+        after_id=after_id,
     )
 
 
+@router.get("/chats/{chat_id}/pinned")
+async def chat_pinned(
+    pool: FromDishka[asyncpg.Pool], chat_id: int, account_id: AccountId
+) -> PinnedView | None:
+    return await get_pinned(pool, account_id, chat_id)
+
+
+@router.post("/chats/{chat_id}/enrich")
+async def enrich_chat(
+    pool: FromDishka[asyncpg.Pool], chat_id: int, body: EnrichRequest
+) -> dict[str, int]:
+    job_id = await enqueue(pool, body.account_id, "enrich_chat", {"chat_id": chat_id})
+    return {"job_id": job_id}
+
+
 @router.get("/chats/{chat_id}/messages/{message_id}/versions")
 async def message_versions(
     pool: FromDishka[asyncpg.Pool], chat_id: int, message_id: int, account_id: AccountId

backend/src/api/routers/custom_emoji.py

@@ -0,0 +1,35 @@
+from typing import Annotated
+
+import asyncpg
+from dishka.integrations.fastapi import DishkaRoute, FromDishka
+from fastapi import APIRouter, HTTPException, Query
+from fastapi.responses import FileResponse
+
+from utils.jobs import enqueue
+from utils.read.custom_emoji import current_custom_emoji
+from utils.storage import ContentAddressedStorage
+
+router = APIRouter(
+    prefix="/api/custom-emoji", tags=["custom-emoji"], route_class=DishkaRoute
+)
+
+
+@router.get("/{custom_emoji_id}")
+async def serve_custom_emoji(
+    pool: FromDishka[asyncpg.Pool],
+    storage: FromDishka[ContentAddressedStorage],
+    custom_emoji_id: int,
+    account_id: Annotated[int, Query()],
+) -> FileResponse:
+    emoji = await current_custom_emoji(pool, custom_emoji_id)
+    if emoji is None or not emoji.downloaded or emoji.storage_key is None:
+        await enqueue(
+            pool, account_id, "fetch_custom_emoji", {"custom_emoji_id": custom_emoji_id}
+        )
+        raise HTTPException(
+            status_code=409, detail="custom emoji not downloaded; fetching"
+        )
+    return FileResponse(
+        storage.url(emoji.storage_key),
+        media_type=emoji.mime or "application/octet-stream",
+    )

backend/src/api/routers/events.py

@@ -0,0 +1,42 @@
+import asyncio
+import json
+from collections.abc import AsyncGenerator
+from typing import Annotated
+
+from fastapi import APIRouter, Query
+from fastapi.responses import StreamingResponse
+
+from api.realtime import Subscriber, hub
+
+router = APIRouter(prefix="/api/events", tags=["events"])
+
+HEARTBEAT_SECONDS = 15
+
+AccountId = Annotated[int, Query()]
+ChatId = Annotated[int | None, Query()]
+
+
+async def _stream(sub: Subscriber) -> AsyncGenerator[str]:
+    try:
+        yield ": connected\n\n"
+        while True:
+            try:
+                frame = await asyncio.wait_for(
+                    sub.queue.get(), timeout=HEARTBEAT_SECONDS
+                )
+            except TimeoutError:
+                yield ": keepalive\n\n"
+                continue
+            yield f"event: {frame['type']}\ndata: {json.dumps(frame)}\n\n"
+    finally:
+        hub.unsubscribe(sub)
+
+
+@router.get("")
+async def events(account_id: AccountId, chat_id: ChatId = None) -> StreamingResponse:
+    sub = hub.subscribe(account_id, chat_id)
+    return StreamingResponse(
+        _stream(sub),
+        media_type="text/event-stream",
+        headers={"Cache-Control": "no-cache", "X-Accel-Buffering": "no"},
+    )

backend/src/api/routers/media.py

@@ -1,10 +1,17 @@
+from typing import Annotated
+
 import asyncpg
 from dishka.integrations.fastapi import DishkaRoute, FromDishka
-from fastapi import APIRouter, HTTPException
+from fastapi import APIRouter, HTTPException, Query
 from fastapi.responses import FileResponse
 
-from utils.read.media import get_media
-from utils.read.models import MediaView
+from utils.read.media import (
+    get_media,
+    get_media_version,
+    get_media_versions,
+    get_message_media,
+)
+from utils.read.models import MediaVersionView, MediaView
 from utils.storage import ContentAddressedStorage
 
 router = APIRouter(prefix="/api/media", tags=["media"], route_class=DishkaRoute)
@@ -18,6 +25,44 @@ async def media_meta(pool: FromDishka[asyncpg.Pool], media_id: int) -> MediaView
     return media
 
 
+@router.get("/versions/{chat_id}/{message_id}")
+async def message_media_versions(
+    pool: FromDishka[asyncpg.Pool],
+    chat_id: int,
+    message_id: int,
+    account_id: Annotated[int, Query()],
+) -> list[MediaVersionView]:
+    return await get_media_versions(pool, account_id, chat_id, message_id)
+
+
+@router.get("/version/{version_id}")
+async def serve_media_version(
+    pool: FromDishka[asyncpg.Pool],
+    storage: FromDishka[ContentAddressedStorage],
+    version_id: int,
+) -> FileResponse:
+    version = await get_media_version(pool, version_id)
+    if version is None:
+        raise HTTPException(status_code=404, detail="media version not found")
+    return FileResponse(
+        storage.url(version.storage_key),
+        media_type=version.mime or "application/octet-stream",
+    )
+
+
+@router.get("/message/{chat_id}/{message_id}")
+async def message_media(
+    pool: FromDishka[asyncpg.Pool],
+    chat_id: int,
+    message_id: int,
+    account_id: Annotated[int, Query()],
+) -> MediaView:
+    media = await get_message_media(pool, account_id, chat_id, message_id)
+    if media is None:
+        raise HTTPException(status_code=404, detail="media not found")
+    return media
+
+
 @router.get("/{media_id}")
 async def serve_media(
     pool: FromDishka[asyncpg.Pool],

backend/src/api/routers/peers.py

@@ -5,13 +5,21 @@ from dishka.integrations.fastapi import DishkaRoute, FromDishka
 from fastapi import APIRouter, HTTPException, Query
 
 from utils.read import peers
-from utils.read.models import DEFAULT_LIMIT, Page, PeerHistoryView, PeerView, StoryView
+from utils.read.models import PeerHistoryView, PeerView
 
 router = APIRouter(prefix="/api", tags=["peers"], route_class=DishkaRoute)
 
 AccountId = Annotated[int, Query()]
 
 
+@router.get("/peers/batch")
+async def get_peers(
+    pool: FromDishka[asyncpg.Pool], account_id: AccountId, ids: Annotated[str, Query()]
+) -> list[PeerView]:
+    parsed = [int(part) for part in ids.split(",") if part.strip()]
+    return await peers.get_peers(pool, account_id, parsed)
+
+
 @router.get("/peers/{peer_id}")
 async def get_peer(
     pool: FromDishka[asyncpg.Pool], peer_id: int, account_id: AccountId
@@ -27,16 +35,3 @@ async def peer_history(
     pool: FromDishka[asyncpg.Pool], peer_id: int, account_id: AccountId
 ) -> list[PeerHistoryView]:
     return await peers.get_peer_history(pool, account_id, peer_id)
-
-
-@router.get("/stories")
-async def stories(
-    pool: FromDishka[asyncpg.Pool],
-    account_id: AccountId,
-    peer_id: Annotated[int | None, Query()] = None,
-    limit: Annotated[int, Query()] = DEFAULT_LIMIT,
-    offset: Annotated[int, Query()] = 0,
-) -> list[StoryView]:
-    return await peers.get_stories(
-        pool, account_id, Page(limit=limit, offset=offset), peer_id=peer_id
-    )

backend/src/api/routers/presence.py

@@ -36,6 +36,13 @@ async def presence_history(
     )
 
 
+@router.get("/current")
+async def current_presence(
+    pool: FromDishka[asyncpg.Pool], account_id: AccountId, peer_id: PeerId
+) -> PresenceSample | None:
+    return await presence.current_presence(pool, account_id, peer_id)
+
+
 @router.get("/hourly")
 async def presence_hourly(
     pool: FromDishka[asyncpg.Pool],

backend/src/api/routers/profile.py

@@ -0,0 +1,70 @@
+from datetime import datetime
+from typing import Annotated
+
+import asyncpg
+from dishka.integrations.fastapi import DishkaRoute, FromDishka
+from fastapi import APIRouter, HTTPException, Query
+
+from utils.read import profile
+from utils.read.models import (
+    DEFAULT_LIMIT,
+    ChatLinkView,
+    DayCount,
+    MediaView,
+    MessageAt,
+    Page,
+)
+
+router = APIRouter(
+    prefix="/api/chats/{chat_id}", tags=["profile"], route_class=DishkaRoute
+)
+
+AccountId = Annotated[int, Query()]
+
+
+@router.get("/media")
+async def chat_media(
+    pool: FromDishka[asyncpg.Pool],
+    chat_id: int,
+    account_id: AccountId,
+    kinds: Annotated[str, Query()],
+    limit: Annotated[int, Query()] = DEFAULT_LIMIT,
+    offset: Annotated[int, Query()] = 0,
+) -> list[MediaView]:
+    parsed = [part for part in kinds.split(",") if part.strip()]
+    return await profile.chat_media(
+        pool, account_id, chat_id, parsed, Page(limit=limit, offset=offset)
+    )
+
+
+@router.get("/links")
+async def chat_links(
+    pool: FromDishka[asyncpg.Pool],
+    chat_id: int,
+    account_id: AccountId,
+    limit: Annotated[int, Query()] = DEFAULT_LIMIT,
+    offset: Annotated[int, Query()] = 0,
+) -> list[ChatLinkView]:
+    return await profile.chat_links(
+        pool, account_id, chat_id, Page(limit=limit, offset=offset)
+    )
+
+
+@router.get("/calendar")
+async def chat_calendar(
+    pool: FromDishka[asyncpg.Pool], chat_id: int, account_id: AccountId
+) -> list[DayCount]:
+    return await profile.daily_counts(pool, account_id, chat_id)
+
+
+@router.get("/message-at")
+async def message_at(
+    pool: FromDishka[asyncpg.Pool],
+    chat_id: int,
+    account_id: AccountId,
+    date: Annotated[datetime, Query()],
+) -> MessageAt:
+    found = await profile.first_message_on_day(pool, account_id, chat_id, date)
+    if found is None:
+        raise HTTPException(status_code=404, detail="no message on day")
+    return found

backend/src/api/routers/stories.py

@@ -0,0 +1,48 @@
+from typing import Annotated
+
+import asyncpg
+from dishka.integrations.fastapi import DishkaRoute, FromDishka
+from fastapi import APIRouter, HTTPException, Query
+from fastapi.responses import FileResponse
+
+from utils.read import peers
+from utils.read.models import DEFAULT_LIMIT, Page, StoryView
+from utils.storage import ContentAddressedStorage
+
+router = APIRouter(prefix="/api", tags=["stories"], route_class=DishkaRoute)
+
+AccountId = Annotated[int, Query()]
+
+_STORY_MIME = {"photo": "image/jpeg", "video": "video/mp4"}
+
+
+@router.get("/stories")
+async def list_stories(
+    pool: FromDishka[asyncpg.Pool],
+    account_id: AccountId,
+    peer_id: Annotated[int | None, Query()] = None,
+    limit: Annotated[int, Query()] = DEFAULT_LIMIT,
+    offset: Annotated[int, Query()] = 0,
+) -> list[StoryView]:
+    return await peers.get_stories(
+        pool, account_id, Page(limit=limit, offset=offset), peer_id=peer_id
+    )
+
+
+@router.get("/stories/{peer_id}/{story_id}/media")
+async def serve_story_media(
+    pool: FromDishka[asyncpg.Pool],
+    storage: FromDishka[ContentAddressedStorage],
+    peer_id: int,
+    story_id: int,
+    account_id: AccountId,
+) -> FileResponse:
+    story = await peers.get_story(pool, account_id, peer_id, story_id)
+    if story is None:
+        raise HTTPException(status_code=404, detail="story not found")
+    if not story.downloaded or story.storage_key is None:
+        raise HTTPException(status_code=409, detail="story media not downloaded")
+    return FileResponse(
+        storage.url(story.storage_key),
+        media_type=_STORY_MIME.get(story.media_kind or "", "application/octet-stream"),
+    )

backend/src/userbot/handlers/deletes.py

@@ -3,6 +3,7 @@ from pyrogram.types import Message
 from userbot import PyroClient
 from userbot.modules.capture import repository
 from userbot.modules.capture.repository import CHANNEL_ID_THRESHOLD
+from utils.events import notify_bg_event
 
 
 @PyroClient.on_deleted_messages()
@@ -21,8 +22,12 @@ async def on_deleted_messages(client: PyroClient, messages: list[Message]) -> No
             channels.setdefault(chat_id, []).append(message.id)
     if box:
         await repository.mark_deleted_box(ctx.pool, ctx.account_id, box)
+        await notify_bg_event(ctx.pool, "delete", ctx.account_id, message_ids=box)
     for chat_id, ids in channels.items():
         await repository.mark_deleted_channel(ctx.pool, ctx.account_id, chat_id, ids)
+        await notify_bg_event(
+            ctx.pool, "delete", ctx.account_id, chat_id=chat_id, message_ids=ids
+        )
 
 
 handlers = on_deleted_messages.handlers

backend/src/userbot/handlers/edits.py

@@ -4,7 +4,8 @@ from userbot import PyroClient
 from userbot.modules.capture import repository
 from userbot.modules.capture.chat_meta import meta_from_chat
 from userbot.modules.capture.message import sender_id
-from userbot.modules.media import self_destruct_ttl
+from userbot.modules.media import capture_media, media_unique_id, self_destruct_ttl
+from utils.events import notify_bg_event
 
 
 @PyroClient.on_edited_message()
@@ -18,7 +19,7 @@ async def on_edited_message(client: PyroClient, message: Message) -> None:
     toggles = ctx.resolve(meta)
     if not toggles.track_edits_deletes:
         return
-    await repository.add_version(
+    changed = await repository.add_version(
         ctx.pool,
         ctx.account_id,
         chat_id,
@@ -28,9 +29,17 @@ async def on_edited_message(client: PyroClient, message: Message) -> None:
         message.text or message.caption,
         str(message),
         message.edit_date,
+        media_unique_id(message),
         has_media=message.media is not None,
         is_self_destruct=self_destruct_ttl(message) is not None,
     )
+    if not changed:
+        return
+    if message.media is not None:
+        await capture_media(client, message, ctx, chat_id, message.id, toggles)
+    await notify_bg_event(
+        ctx.pool, "edit", ctx.account_id, chat_id=chat_id, message_id=message.id
+    )
 
 
 handlers = on_edited_message.handlers

backend/src/userbot/handlers/messages.py

@@ -5,6 +5,7 @@ from userbot.modules.capture import capture_message
 from userbot.modules.capture.chat_meta import meta_from_chat
 from userbot.modules.stt import is_transcribable
 from userbot.modules.stt.gate import safe_transcribe
+from utils.events import notify_bg_event
 
 
 @PyroClient.on_message()
@@ -18,6 +19,9 @@ async def on_message(client: PyroClient, message: Message) -> None:
     if not toggles.messages:
         return
     await capture_message(client, message, ctx, toggles)
+    await notify_bg_event(
+        ctx.pool, "message", ctx.account_id, chat_id=meta.chat_id, message_id=message.id
+    )
     if (
         toggles.stt
         and is_transcribable(message)

backend/src/userbot/handlers/presence.py

@@ -4,6 +4,7 @@ from pyrogram.types import User
 
 from userbot import PyroClient
 from userbot.modules.presence import repository
+from utils.events import notify_bg_event
 
 
 @PyroClient.on_user_status()
@@ -22,6 +23,7 @@ async def on_user_status(client: PyroClient, user: User) -> None:
         str(user.raw),
     )
     await ctx.watches.on_status(user.id, is_online=user.status.name.lower() == "online")
+    await notify_bg_event(ctx.pool, "presence", ctx.account_id, chat_id=user.id)
 
 
 handlers = on_user_status.handlers

backend/src/userbot/handlers/raw/reactions.py

@@ -3,6 +3,7 @@ from pyrogram import raw, utils
 from userbot import PyroClient
 from userbot.modules.capture import repository
 from userbot.modules.capture.chat_meta import meta_from_peer
+from utils.events import notify_bg_event
 
 HANDLES = (raw.types.UpdateMessageReactions,)
 
@@ -47,3 +48,10 @@ async def handle(
     await repository.sync_reactions(
         ctx.pool, ctx.account_id, meta.chat_id, update.msg_id, current
     )
+    await notify_bg_event(
+        ctx.pool,
+        "reaction",
+        ctx.account_id,
+        chat_id=meta.chat_id,
+        message_id=update.msg_id,
+    )

backend/src/userbot/handlers/raw/read_receipts.py

@@ -4,6 +4,7 @@ from pyrogram import raw, utils
 
 from userbot import PyroClient
 from userbot.modules.read_receipts import repository
+from utils.events import notify_bg_event
 
 HANDLES = (raw.types.UpdateReadHistoryOutbox,)
 
@@ -24,3 +25,6 @@ async def handle(
         update.max_id,
         str(update),
     )
+    await notify_bg_event(
+        ctx.pool, "receipt", ctx.account_id, chat_id=chat_id, message_id=update.max_id
+    )

backend/src/userbot/modules/avatars/__init__.py

@@ -1,3 +1,4 @@
 from userbot.modules.avatars.downloader import capture_avatar
+from userbot.modules.avatars.repository import note_avatar
 
-__all__ = ["capture_avatar"]
+__all__ = ["capture_avatar", "note_avatar"]

backend/src/userbot/modules/avatars/repository.py

@@ -1,3 +1,5 @@
+import json
+
 import asyncpg
 
 _INSERT_AVATAR = """
@@ -13,6 +15,16 @@ SELECT 1 FROM avatars
 WHERE account_id = $1 AND owner_id = $2 AND unique_id = $3
 """
 
+_GET_FILE = """
+SELECT raw ->> 'file_id' AS file_id, downloaded FROM avatars
+WHERE account_id = $1 AND owner_kind = $2 AND owner_id = $3 AND unique_id = $4
+"""
+
+_MARK_DOWNLOADED = """
+UPDATE avatars SET downloaded = true, storage_key = $5, file_size = $6
+WHERE account_id = $1 AND owner_kind = $2 AND owner_id = $3 AND unique_id = $4
+"""
+
 
 async def avatar_exists(
     pool: asyncpg.Pool, account_id: int, owner_id: int, unique_id: str
@@ -46,3 +58,54 @@ async def insert_avatar(  # noqa: PLR0913
         downloaded,
         raw,
     )
+
+
+async def note_avatar(  # noqa: PLR0913
+    pool: asyncpg.Pool,
+    account_id: int,
+    owner_id: int,
+    owner_kind: str,
+    unique_id: str,
+    file_id: str,
+) -> None:
+    await insert_avatar(
+        pool,
+        account_id,
+        owner_id,
+        owner_kind,
+        unique_id,
+        None,
+        None,
+        None,
+        json.dumps({"file_id": file_id}),
+        downloaded=False,
+    )
+
+
+async def get_avatar_file(
+    pool: asyncpg.Pool, account_id: int, owner_kind: str, owner_id: int, unique_id: str
+) -> tuple[str | None, bool] | None:
+    row = await pool.fetchrow(_GET_FILE, account_id, owner_kind, owner_id, unique_id)
+    if row is None:
+        return None
+    return row["file_id"], row["downloaded"]
+
+
+async def mark_avatar_downloaded(  # noqa: PLR0913
+    pool: asyncpg.Pool,
+    account_id: int,
+    owner_kind: str,
+    owner_id: int,
+    unique_id: str,
+    storage_key: str,
+    file_size: int,
+) -> None:
+    await pool.execute(
+        _MARK_DOWNLOADED,
+        account_id,
+        owner_kind,
+        owner_id,
+        unique_id,
+        storage_key,
+        file_size,
+    )

backend/src/userbot/modules/capture/context.py

@@ -1,6 +1,7 @@
 import asyncpg
 from pyrogram import Client
 
+from userbot.modules.capture.identity import ChatMetaCache, PeerIdentityCache
 from userbot.modules.contacts import ContactCache
 from userbot.modules.folders import FolderCache
 from userbot.modules.watches import WatchCache
@@ -25,6 +26,8 @@ class CaptureContext:
         self.folders = folders
         self.contacts = contacts
         self.watches = WatchCache(pool, account_id)
+        self.peer_identity = PeerIdentityCache()
+        self.chat_meta = ChatMetaCache()
         self.policies = PolicySet()
 
     async def reload_policies(self) -> None:

backend/src/userbot/modules/capture/identity.py

@@ -0,0 +1,110 @@
+from __future__ import annotations
+
+from typing import TYPE_CHECKING
+
+from userbot.modules.capture.chat_meta import chat_kind
+from userbot.modules.profiles.parse import ProfileFields, snapshot_from_high_level
+from userbot.modules.profiles.repository import get_peer, write_profile
+from utils.policy.models import ChatKind
+
+if TYPE_CHECKING:
+    import asyncpg
+    from pyrogram.types import Message
+
+    from userbot.modules.capture.context import CaptureContext
+
+
+class PeerIdentityCache:
+    def __init__(self) -> None:
+        self._cache: dict[int, ProfileFields | None] = {}
+
+    async def changed(
+        self, pool: asyncpg.Pool, account_id: int, peer_id: int, fields: ProfileFields
+    ) -> bool:
+        if peer_id not in self._cache:
+            self._cache[peer_id] = await get_peer(pool, account_id, peer_id)
+        if self._cache[peer_id] == fields:
+            return False
+        self._cache[peer_id] = fields
+        return True
+
+
+class ChatMetaCache:
+    def __init__(self) -> None:
+        self._cache: dict[int, tuple[str | None, str | None]] = {}
+
+    async def changed(
+        self,
+        pool: asyncpg.Pool,
+        account_id: int,
+        chat_id: int,
+        meta: tuple[str | None, str | None],
+    ) -> bool:
+        from userbot.modules.groups.repository import (  # noqa: PLC0415
+            get_latest_chat_meta,
+        )
+
+        if chat_id not in self._cache:
+            self._cache[chat_id] = await get_latest_chat_meta(pool, account_id, chat_id)
+        if self._cache[chat_id] == meta:
+            return False
+        self._cache[chat_id] = meta
+        return True
+
+
+async def _capture_peer(message: Message, ctx: CaptureContext) -> None:
+    user = message.from_user
+    if user is None:
+        return
+    fields, photo_file_id, photo_unique_id = snapshot_from_high_level(user)
+    if not await ctx.peer_identity.changed(ctx.pool, ctx.account_id, user.id, fields):
+        return
+    await write_profile(ctx.pool, ctx.account_id, user.id, fields, str(user))
+    if photo_file_id and photo_unique_id:
+        from userbot.modules.avatars import note_avatar  # noqa: PLC0415
+
+        await note_avatar(
+            ctx.pool, ctx.account_id, user.id, "peer", photo_unique_id, photo_file_id
+        )
+
+
+async def _capture_chat(message: Message, ctx: CaptureContext) -> None:
+    chat = message.chat
+    if (
+        chat is None
+        or chat.id is None
+        or message.date is None
+        or chat_kind(chat.type) is ChatKind.DM
+    ):
+        return
+    photo = chat.photo
+    photo_unique_id = photo.big_photo_unique_id if photo else None
+    photo_file_id = photo.big_file_id if photo else None
+    meta = (chat.title, photo_unique_id)
+    if not await ctx.chat_meta.changed(ctx.pool, ctx.account_id, chat.id, meta):
+        return
+    from userbot.modules.groups.repository import insert_chat_history  # noqa: PLC0415
+
+    await insert_chat_history(
+        ctx.pool,
+        ctx.account_id,
+        chat.id,
+        message.id,
+        "meta",
+        chat.title,
+        photo_unique_id,
+        None,
+        message.date,
+        str(message),
+    )
+    if photo_file_id and photo_unique_id:
+        from userbot.modules.avatars import note_avatar  # noqa: PLC0415
+
+        await note_avatar(
+            ctx.pool, ctx.account_id, chat.id, "chat", photo_unique_id, photo_file_id
+        )
+
+
+async def capture_identity(message: Message, ctx: CaptureContext) -> None:
+    await _capture_peer(message, ctx)
+    await _capture_chat(message, ctx)

backend/src/userbot/modules/capture/message.py

@@ -51,6 +51,9 @@ async def capture_message(
         has_media=message.media is not None,
         is_self_destruct=self_destruct_ttl(message) is not None,
     )
+    from userbot.modules.capture.identity import capture_identity  # noqa: PLC0415
+
+    await capture_identity(message, ctx)
     await capture_media(client, message, ctx, chat_id, message.id, toggles)
     buttons = callbacks(message)
     if buttons:

backend/src/userbot/modules/capture/repository.py

@@ -23,28 +23,71 @@ INSERT INTO messages
      has_media, is_self_destruct, edited_at)
 VALUES ($1, $2, $3, $4, $5, $6, $7::jsonb, $8, $9, now())
 ON CONFLICT (account_id, chat_id, message_id, date) DO UPDATE SET
+    text = EXCLUDED.text,
+    raw = EXCLUDED.raw,
+    has_media = EXCLUDED.has_media,
+    is_self_destruct = EXCLUDED.is_self_destruct,
     edited_at = now()
 """
 
 _INSERT_VERSION = """
 INSERT INTO message_versions
     (account_id, chat_id, message_id, observed_at, edit_date, text, raw)
-VALUES ($1, $2, $3, now(), $4, $5, $6::jsonb)
+VALUES ($1, $2, $3, clock_timestamp(), $4, $5, $6::jsonb)
 ON CONFLICT DO NOTHING
 """
 
+_SNAPSHOT_ORIGINAL = """
+INSERT INTO message_versions
+    (account_id, chat_id, message_id, observed_at, edit_date, text, raw)
+SELECT account_id, chat_id, message_id, clock_timestamp(), NULL, text, raw
+FROM messages m
+WHERE m.account_id = $1 AND m.chat_id = $2 AND m.message_id = $3
+  AND NOT EXISTS (
+    SELECT 1 FROM message_versions v
+    WHERE v.account_id = m.account_id AND v.chat_id = m.chat_id
+      AND v.message_id = m.message_id
+  )
+ON CONFLICT DO NOTHING
+"""
+
+_CURRENT_CONTENT = """
+SELECT
+    m.text AS text,
+    (SELECT d.unique_id FROM media d
+     WHERE d.account_id = m.account_id AND d.chat_id = m.chat_id
+       AND d.message_id = m.message_id) AS media_unique_id
+FROM messages m
+WHERE m.account_id = $1 AND m.chat_id = $2 AND m.message_id = $3
+ORDER BY m.date DESC LIMIT 1
+"""
+
+_CURRENT_MEDIA = """
+SELECT unique_id, storage_key, file_size, downloaded FROM media
+WHERE account_id = $1 AND chat_id = $2 AND message_id = $3
+"""
+
+_INSERT_MEDIA_VERSION = """
+INSERT INTO media_versions
+    (account_id, chat_id, message_id, observed_at, kind, storage_key,
+     file_size, mime, ttl_seconds, unique_id)
+VALUES ($1, $2, $3, clock_timestamp(), $4, $5, $6, $7, $8, $9)
+ON CONFLICT (account_id, chat_id, message_id, storage_key) DO NOTHING
+"""
+
 _INSERT_MEDIA = """
 INSERT INTO media
     (account_id, chat_id, message_id, kind, storage_key, file_size, mime,
-     ttl_seconds, downloaded)
-VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9)
+     ttl_seconds, downloaded, unique_id)
+VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10)
 ON CONFLICT (account_id, chat_id, message_id) DO UPDATE SET
     kind = EXCLUDED.kind,
     storage_key = EXCLUDED.storage_key,
     file_size = EXCLUDED.file_size,
     mime = EXCLUDED.mime,
     ttl_seconds = EXCLUDED.ttl_seconds,
-    downloaded = EXCLUDED.downloaded
+    downloaded = EXCLUDED.downloaded,
+    unique_id = EXCLUDED.unique_id
 """
 
 
@@ -111,11 +154,20 @@ async def add_version(  # noqa: PLR0913
     text: str | None,
     raw: str,
     edit_date: datetime | None,
+    media_unique_id: str | None,
     *,
     has_media: bool,
     is_self_destruct: bool,
-) -> None:
+) -> bool:
     async with pool.acquire() as conn, conn.transaction():
+        current = await conn.fetchrow(_CURRENT_CONTENT, account_id, chat_id, message_id)
+        text_changed = current is None or current["text"] != text
+        media_changed = (
+            current is not None and current["media_unique_id"] != media_unique_id
+        )
+        if not (text_changed or media_changed):
+            return False
+        await conn.execute(_SNAPSHOT_ORIGINAL, account_id, chat_id, message_id)
         await conn.execute(
             _TOUCH_EDITED,
             account_id,
@@ -131,6 +183,13 @@ async def add_version(  # noqa: PLR0913
         await conn.execute(
             _INSERT_VERSION, account_id, chat_id, message_id, edit_date, text, raw
         )
+    return True
+
+
+async def current_media(
+    pool: asyncpg.Pool, account_id: int, chat_id: int, message_id: int
+) -> asyncpg.Record | None:
+    return await pool.fetchrow(_CURRENT_MEDIA, account_id, chat_id, message_id)
 
 
 async def insert_media(  # noqa: PLR0913
@@ -143,21 +202,37 @@ async def insert_media(  # noqa: PLR0913
     file_size: int | None,
     mime: str | None,
     ttl_seconds: int | None,
+    unique_id: str | None,
     *,
     downloaded: bool,
 ) -> None:
-    await pool.execute(
-        _INSERT_MEDIA,
-        account_id,
-        chat_id,
-        message_id,
-        kind,
-        storage_key,
-        file_size,
-        mime,
-        ttl_seconds,
-        downloaded,
-    )
+    async with pool.acquire() as conn, conn.transaction():
+        await conn.execute(
+            _INSERT_MEDIA,
+            account_id,
+            chat_id,
+            message_id,
+            kind,
+            storage_key,
+            file_size,
+            mime,
+            ttl_seconds,
+            downloaded,
+            unique_id,
+        )
+        if storage_key is not None:
+            await conn.execute(
+                _INSERT_MEDIA_VERSION,
+                account_id,
+                chat_id,
+                message_id,
+                kind,
+                storage_key,
+                file_size,
+                mime,
+                ttl_seconds,
+                unique_id,
+            )
 
 
 async def insert_callbacks(

backend/src/userbot/modules/custom_emoji/repository.py

@@ -0,0 +1,34 @@
+import asyncpg
+
+_GET = """
+SELECT downloaded FROM custom_emoji WHERE custom_emoji_id = $1
+"""
+
+_UPSERT_DOWNLOADED = """
+INSERT INTO custom_emoji
+    (custom_emoji_id, storage_key, file_size, mime, kind, downloaded, raw)
+VALUES ($1, $2, $3, $4, $5, true, '{}'::jsonb)
+ON CONFLICT (custom_emoji_id) DO UPDATE SET
+    storage_key = EXCLUDED.storage_key,
+    file_size = EXCLUDED.file_size,
+    mime = EXCLUDED.mime,
+    kind = EXCLUDED.kind,
+    downloaded = true
+"""
+
+
+async def is_downloaded(pool: asyncpg.Pool, custom_emoji_id: int) -> bool:
+    return bool(await pool.fetchval(_GET, custom_emoji_id))
+
+
+async def upsert_downloaded(  # noqa: PLR0913
+    pool: asyncpg.Pool,
+    custom_emoji_id: int,
+    storage_key: str,
+    file_size: int | None,
+    mime: str | None,
+    kind: str,
+) -> None:
+    await pool.execute(
+        _UPSERT_DOWNLOADED, custom_emoji_id, storage_key, file_size, mime, kind
+    )

backend/src/userbot/modules/groups/repository.py

@@ -17,6 +17,26 @@ VALUES ($1, $2, $3, $4, $5, $6, $7, $8::jsonb)
 ON CONFLICT (account_id, chat_id, message_id, user_id) DO NOTHING
 """
 
+_LATEST_TITLE = """
+SELECT title FROM chat_history
+WHERE account_id = $1 AND chat_id = $2 AND title IS NOT NULL
+ORDER BY ts DESC LIMIT 1
+"""
+
+_LATEST_PHOTO = """
+SELECT photo_unique_id FROM chat_history
+WHERE account_id = $1 AND chat_id = $2 AND photo_unique_id IS NOT NULL
+ORDER BY ts DESC LIMIT 1
+"""
+
+
+async def get_latest_chat_meta(
+    pool: asyncpg.Pool, account_id: int, chat_id: int
+) -> tuple[str | None, str | None]:
+    title = await pool.fetchval(_LATEST_TITLE, account_id, chat_id)
+    photo_unique_id = await pool.fetchval(_LATEST_PHOTO, account_id, chat_id)
+    return title, photo_unique_id
+
 
 async def insert_chat_history(  # noqa: PLR0913
     pool: asyncpg.Pool,

backend/src/userbot/modules/jobs/handlers/__init__.py

@@ -1,3 +1,19 @@
-from userbot.modules.jobs.handlers import backfill, fetch_media, transcribe
+from userbot.modules.jobs.handlers import (
+    backfill,
+    enrich_chat,
+    fetch_avatar,
+    fetch_custom_emoji,
+    fetch_media,
+    sync_dialogs,
+    transcribe,
+)
 
-__all__ = ["backfill", "fetch_media", "transcribe"]
+__all__ = [
+    "backfill",
+    "enrich_chat",
+    "fetch_avatar",
+    "fetch_custom_emoji",
+    "fetch_media",
+    "sync_dialogs",
+    "transcribe",
+]

backend/src/userbot/modules/jobs/handlers/backfill.py

@@ -1,3 +1,5 @@
+from pyrogram.errors import PeerIdInvalid
+
 from userbot.modules.capture import capture_message
 from userbot.modules.jobs.context import JobContext
 from userbot.modules.jobs.registry import register
@@ -23,11 +25,15 @@ async def backfill(ctx: JobContext) -> None:
     max_id = (ctx.job.cursor or {}).get("max_id", 0)
     processed = ctx.job.progress.get("processed", 0)
     kwargs = {"max_id": max_id} if max_id else {}
-    async for message in client.get_chat_history(chat_id, **kwargs):
-        await capture_message(client, message, capture, toggles)
-        processed += 1
-        if processed % SAVE_EVERY == 0:
-            next_max = message.id - 1
-            await ctx.save_cursor({"max_id": next_max})
-            await ctx.report_progress({"processed": processed, "max_id": next_max})
+    try:
+        async for message in client.get_chat_history(chat_id, **kwargs):
+            await capture_message(client, message, capture, toggles)
+            processed += 1
+            if processed % SAVE_EVERY == 0:
+                next_max = message.id - 1
+                await ctx.save_cursor({"max_id": next_max})
+                await ctx.report_progress({"processed": processed, "max_id": next_max})
+    except PeerIdInvalid:
+        await ctx.report_progress({"processed": processed, "error": "peer_id_invalid"})
+        return
     await ctx.report_progress({"processed": processed, "done": True})

backend/src/userbot/modules/jobs/handlers/enrich_chat.py

@@ -0,0 +1,91 @@
+from datetime import UTC, datetime
+
+from pyrogram import Client
+from pyrogram.errors import BadRequest, Forbidden
+from pyrogram.types import User
+
+from userbot.modules.avatars import note_avatar
+from userbot.modules.capture.context import CaptureContext
+from userbot.modules.groups.repository import insert_chat_history
+from userbot.modules.jobs.context import JobContext
+from userbot.modules.jobs.registry import register
+from userbot.modules.profiles.parse import snapshot_from_high_level
+from userbot.modules.profiles.repository import write_profile
+
+MEMBER_CAP = 200
+
+_MISSING_SENDERS = """
+SELECT DISTINCT sender_id FROM messages
+WHERE account_id = $1 AND chat_id = $2 AND sender_id > 0
+  AND NOT EXISTS (
+    SELECT 1 FROM peers p WHERE p.account_id = $1 AND p.peer_id = messages.sender_id
+  )
+LIMIT 100
+"""
+
+
+async def _save_user(ctx: CaptureContext, user: User) -> None:
+    fields, photo_file_id, photo_unique_id = snapshot_from_high_level(user)
+    await write_profile(ctx.pool, ctx.account_id, user.id, fields, str(user))
+    if photo_file_id and photo_unique_id:
+        await note_avatar(
+            ctx.pool, ctx.account_id, user.id, "peer", photo_unique_id, photo_file_id
+        )
+
+
+async def _enrich_chat_meta(client: Client, ctx: CaptureContext, chat_id: int) -> None:
+    chat = await client.get_chat(chat_id)
+    photo = chat.photo
+    photo_unique_id = photo.big_photo_unique_id if photo else None
+    photo_file_id = photo.big_file_id if photo else None
+    await insert_chat_history(
+        ctx.pool,
+        ctx.account_id,
+        chat_id,
+        0,
+        "meta",
+        chat.title,
+        photo_unique_id,
+        None,
+        datetime.now(UTC),
+        str(chat),
+    )
+    if photo_file_id and photo_unique_id:
+        await note_avatar(
+            ctx.pool, ctx.account_id, chat_id, "chat", photo_unique_id, photo_file_id
+        )
+
+
+async def _enrich_members(client: Client, ctx: CaptureContext, chat_id: int) -> None:
+    try:
+        async for member in client.get_chat_members(chat_id, limit=MEMBER_CAP):
+            if isinstance(member.user, User):
+                await _save_user(ctx, member.user)
+    except (BadRequest, Forbidden):
+        return
+
+
+async def _enrich_senders(client: Client, ctx: CaptureContext, chat_id: int) -> None:
+    rows = await ctx.pool.fetch(_MISSING_SENDERS, ctx.account_id, chat_id)
+    ids = [row["sender_id"] for row in rows]
+    for sender_id in ids:
+        try:
+            user = await client.get_users(sender_id)
+        except BadRequest:
+            continue
+        if isinstance(user, User):
+            await _save_user(ctx, user)
+
+
+@register("enrich_chat")
+async def enrich_chat(ctx: JobContext) -> None:
+    client = ctx.client
+    if client is None:
+        return
+    capture = getattr(client, "capture", None)
+    if capture is None:
+        return
+    chat_id = ctx.job.params["chat_id"]
+    await _enrich_chat_meta(client, capture, chat_id)
+    await _enrich_members(client, capture, chat_id)
+    await _enrich_senders(client, capture, chat_id)

backend/src/userbot/modules/jobs/handlers/fetch_avatar.py

@@ -0,0 +1,40 @@
+from io import BytesIO
+
+from userbot.modules.avatars.repository import get_avatar_file, mark_avatar_downloaded
+from userbot.modules.jobs.context import JobContext
+from userbot.modules.jobs.registry import register
+
+
+@register("fetch_avatar")
+async def fetch_avatar(ctx: JobContext) -> None:
+    client = ctx.client
+    if client is None:
+        return
+    capture = getattr(client, "capture", None)
+    if capture is None:
+        return
+    owner_kind = ctx.job.params["owner_kind"]
+    owner_id = ctx.job.params["owner_id"]
+    unique_id = ctx.job.params["unique_id"]
+    found = await get_avatar_file(
+        ctx.pool, ctx.account_id, owner_kind, owner_id, unique_id
+    )
+    if found is None:
+        return
+    file_id, downloaded = found
+    if downloaded or file_id is None:
+        return
+    buffer = await client.download_media(file_id, in_memory=True)
+    if not isinstance(buffer, BytesIO):
+        return
+    data = buffer.getvalue()
+    storage_key = capture.storage.put(data)
+    await mark_avatar_downloaded(
+        ctx.pool,
+        ctx.account_id,
+        owner_kind,
+        owner_id,
+        unique_id,
+        storage_key,
+        len(data),
+    )

backend/src/userbot/modules/jobs/handlers/fetch_custom_emoji.py

@@ -0,0 +1,45 @@
+from io import BytesIO
+
+from pyrogram.types import Sticker
+
+from userbot.modules.custom_emoji.repository import is_downloaded, upsert_downloaded
+from userbot.modules.jobs.context import JobContext
+from userbot.modules.jobs.registry import register
+
+
+def _kind(sticker: Sticker) -> str:
+    if sticker.is_animated:
+        return "animated"
+    if sticker.is_video:
+        return "video"
+    return "static"
+
+
+@register("fetch_custom_emoji")
+async def fetch_custom_emoji(ctx: JobContext) -> None:
+    client = ctx.client
+    if client is None:
+        return
+    capture = getattr(client, "capture", None)
+    if capture is None:
+        return
+    custom_emoji_id = int(ctx.job.params["custom_emoji_id"])
+    if await is_downloaded(ctx.pool, custom_emoji_id):
+        return
+    stickers = await client.get_custom_emoji_stickers([str(custom_emoji_id)])
+    if not stickers:
+        return
+    sticker = stickers[0]
+    buffer = await client.download_media(sticker.file_id, in_memory=True)
+    if not isinstance(buffer, BytesIO):
+        return
+    data = buffer.getvalue()
+    storage_key = capture.storage.put(data)
+    await upsert_downloaded(
+        ctx.pool,
+        custom_emoji_id,
+        storage_key,
+        len(data),
+        sticker.mime_type,
+        _kind(sticker),
+    )

backend/src/userbot/modules/jobs/handlers/sync_dialogs.py

@@ -0,0 +1,108 @@
+from datetime import UTC, datetime
+
+from pyrogram import Client
+from pyrogram.errors import BadRequest, Forbidden
+from pyrogram.types import Chat, User
+
+from userbot.modules.avatars import note_avatar
+from userbot.modules.capture.context import CaptureContext
+from userbot.modules.groups.repository import insert_chat_history
+from userbot.modules.jobs.context import JobContext
+from userbot.modules.jobs.registry import register
+from userbot.modules.profiles.parse import snapshot_from_chat, snapshot_from_high_level
+from userbot.modules.profiles.repository import write_profile
+
+SAVE_EVERY = 100
+USERS_BATCH = 200
+
+_UPSERT_DIALOG = """
+INSERT INTO dialogs (account_id, chat_id) VALUES ($1, $2)
+ON CONFLICT (account_id, chat_id) DO UPDATE SET updated_at = now()
+"""
+
+
+async def _save_private(ctx: CaptureContext, chat: Chat, chat_id: int) -> bool:
+    fields, photo_file_id, photo_unique_id = snapshot_from_chat(chat)
+    await write_profile(ctx.pool, ctx.account_id, chat_id, fields, str(chat))
+    if photo_file_id and photo_unique_id:
+        await note_avatar(
+            ctx.pool, ctx.account_id, chat_id, "peer", photo_unique_id, photo_file_id
+        )
+    return bool(fields.first_name or fields.last_name or fields.username)
+
+
+async def _enrich_users(client: Client, ctx: CaptureContext, ids: list[int]) -> None:
+    for start in range(0, len(ids), USERS_BATCH):
+        batch = ids[start : start + USERS_BATCH]
+        try:
+            result = await client.get_users(batch)
+        except (BadRequest, Forbidden):
+            continue
+        users = result if isinstance(result, list) else [result]
+        for user in users:
+            if not isinstance(user, User):
+                continue
+            fields, photo_file_id, photo_unique_id = snapshot_from_high_level(user)
+            await write_profile(ctx.pool, ctx.account_id, user.id, fields, str(user))
+            if photo_file_id and photo_unique_id:
+                await note_avatar(
+                    ctx.pool,
+                    ctx.account_id,
+                    user.id,
+                    "peer",
+                    photo_unique_id,
+                    photo_file_id,
+                )
+
+
+async def _save_group(ctx: CaptureContext, chat: Chat, chat_id: int) -> None:
+    photo = chat.photo
+    photo_unique_id = photo.big_photo_unique_id if photo else None
+    photo_file_id = photo.big_file_id if photo else None
+    await insert_chat_history(
+        ctx.pool,
+        ctx.account_id,
+        chat_id,
+        0,
+        "meta",
+        chat.title,
+        photo_unique_id,
+        None,
+        datetime.now(UTC),
+        str(chat),
+    )
+    if photo_file_id and photo_unique_id:
+        await note_avatar(
+            ctx.pool, ctx.account_id, chat_id, "chat", photo_unique_id, photo_file_id
+        )
+
+
+@register("sync_dialogs")
+async def sync_dialogs(ctx: JobContext) -> None:
+    client = ctx.client
+    if client is None:
+        return
+    capture = getattr(client, "capture", None)
+    if capture is None:
+        return
+    processed = ctx.job.progress.get("processed", 0)
+    nameless: list[int] = []
+    async for dialog in client.get_dialogs():
+        chat = dialog.chat
+        if chat is None or chat.id is None:
+            continue
+        chat_id = chat.id
+        try:
+            if chat_id > 0:
+                if not await _save_private(capture, chat, chat_id):
+                    nameless.append(chat_id)
+            else:
+                await _save_group(capture, chat, chat_id)
+        except (BadRequest, Forbidden):
+            pass
+        await ctx.pool.execute(_UPSERT_DIALOG, ctx.account_id, chat_id)
+        processed += 1
+        if processed % SAVE_EVERY == 0:
+            await ctx.report_progress({"processed": processed})
+    await _enrich_users(client, capture, nameless)
+    await ctx.report_progress({"processed": processed, "done": True})

backend/src/userbot/modules/media/__init__.py

@@ -1,3 +1,7 @@
-from userbot.modules.media.downloader import capture_media, self_destruct_ttl
+from userbot.modules.media.downloader import (
+    capture_media,
+    media_unique_id,
+    self_destruct_ttl,
+)
 
-__all__ = ["capture_media", "self_destruct_ttl"]
+__all__ = ["capture_media", "media_unique_id", "self_destruct_ttl"]

backend/src/userbot/modules/media/downloader.py

@@ -20,11 +20,20 @@ _MEDIA_ATTRS = (
 )
 
 
+_WEB_PAGE_ATTRS = ("photo", "video", "animation", "document", "audio")
+
+
 def media_object(message: Message) -> tuple[str | None, Any]:
     for attr in _MEDIA_ATTRS:
         obj = getattr(message, attr, None)
         if obj is not None:
             return attr, obj
+    web_page = getattr(message, "web_page", None)
+    if web_page is not None:
+        for attr in _WEB_PAGE_ATTRS:
+            obj = getattr(web_page, attr, None)
+            if obj is not None:
+                return attr, obj
     return None, None
 
 
@@ -33,6 +42,11 @@ def self_destruct_ttl(message: Message) -> int | None:
     return getattr(obj, "ttl_seconds", None) if obj is not None else None
 
 
+def media_unique_id(message: Message) -> str | None:
+    _, obj = media_object(message)
+    return getattr(obj, "file_unique_id", None) if obj is not None else None
+
+
 async def capture_media(  # noqa: PLR0913
     client: Client,
     message: Message,
@@ -44,6 +58,7 @@ async def capture_media(  # noqa: PLR0913
     kind, obj = media_object(message)
     if obj is None:
         return
+    unique_id = getattr(obj, "file_unique_id", None)
     ttl = getattr(obj, "ttl_seconds", None)
     want = toggles.self_destruct_media if ttl else toggles.media
     file_size = getattr(obj, "file_size", None)
@@ -51,12 +66,26 @@ async def capture_media(  # noqa: PLR0913
     storage_key: str | None = None
     downloaded = False
     if want:
-        buffer = await client.download_media(message, in_memory=True)
-        if isinstance(buffer, BytesIO):
-            data = buffer.getvalue()
-            storage_key = ctx.storage.put(data)
-            file_size = len(data)
+        existing = await repository.current_media(
+            ctx.pool, ctx.account_id, chat_id, message_id
+        )
+        if (
+            existing is not None
+            and existing["downloaded"]
+            and existing["unique_id"] == unique_id
+            and existing["storage_key"] is not None
+        ):
+            storage_key = existing["storage_key"]
+            file_size = existing["file_size"]
             downloaded = True
+        else:
+            target = message if getattr(message, kind or "", None) is obj else obj
+            buffer = await client.download_media(target, in_memory=True)
+            if isinstance(buffer, BytesIO):
+                data = buffer.getvalue()
+                storage_key = ctx.storage.put(data)
+                file_size = len(data)
+                downloaded = True
     await repository.insert_media(
         ctx.pool,
         ctx.account_id,
@@ -67,5 +96,6 @@ async def capture_media(  # noqa: PLR0913
         file_size,
         mime,
         ttl,
+        unique_id,
         downloaded=downloaded,
     )

backend/src/userbot/modules/profiles/__init__.py

@@ -1,7 +1,13 @@
 from userbot.modules.profiles.parse import (
     ProfileFields,
     active_username,
+    snapshot_from_high_level,
     snapshot_from_user,
 )
 
-__all__ = ["ProfileFields", "active_username", "snapshot_from_user"]
+__all__ = [
+    "ProfileFields",
+    "active_username",
+    "snapshot_from_high_level",
+    "snapshot_from_user",
+]

backend/src/userbot/modules/profiles/parse.py

@@ -1,7 +1,7 @@
 from dataclasses import dataclass
 
 from pyrogram import Client, raw
-from pyrogram.types import User
+from pyrogram.types import Chat, User
 
 
 @dataclass(frozen=True)
@@ -37,3 +37,35 @@ def snapshot_from_user(
         is_deleted_account=bool(getattr(raw_user, "deleted", False)),
     )
     return fields, photo_file_id, photo_unique_id
+
+
+def snapshot_from_high_level(
+    user: User,
+) -> tuple[ProfileFields, str | None, str | None]:
+    photo = user.photo
+    photo_unique_id = photo.big_photo_unique_id if photo else None
+    photo_file_id = photo.big_file_id if photo else None
+    fields = ProfileFields(
+        first_name=user.first_name,
+        last_name=user.last_name,
+        username=user.username,
+        phone=user.phone_number,
+        photo_unique_id=photo_unique_id,
+        is_deleted_account=bool(user.is_deleted),
+    )
+    return fields, photo_file_id, photo_unique_id
+
+
+def snapshot_from_chat(chat: Chat) -> tuple[ProfileFields, str | None, str | None]:
+    photo = chat.photo
+    photo_unique_id = photo.big_photo_unique_id if photo else None
+    photo_file_id = photo.big_file_id if photo else None
+    fields = ProfileFields(
+        first_name=chat.first_name,
+        last_name=chat.last_name,
+        username=chat.username,
+        phone=None,
+        photo_unique_id=photo_unique_id,
+        is_deleted_account=False,
+    )
+    return fields, photo_file_id, photo_unique_id

backend/src/userbot/runner.py

@@ -13,6 +13,7 @@ from userbot import PyroClient
 from userbot.modules.capture import CaptureContext, build_capture_context
 from userbot.modules.jobs import JobConsumer
 from utils.env import env
+from utils.jobs import enqueue
 from utils.logging import logger, setup_logging
 from utils.read.watches import WATCHES_CHANGED_CHANNEL
 from utils.storage import ContentAddressedStorage
@@ -72,6 +73,17 @@ async def _setup_capture(
     logger.info("[green]Capture context ready.[/]")
 
 
+async def _enqueue_sync_dialogs(pool: asyncpg.Pool, account_id: int) -> None:
+    existing = await pool.fetchval(
+        "SELECT 1 FROM jobs WHERE account_id = $1 AND kind = 'sync_dialogs' "
+        "AND status IN ('pending', 'running') LIMIT 1",
+        account_id,
+    )
+    if existing is None:
+        await enqueue(pool, account_id, "sync_dialogs", {})
+        logger.info("[green]Queued sync_dialogs.[/]")
+
+
 async def _listen_changes(
     clients: list[PyroClient], tasks: set[asyncio.Task]
 ) -> asyncpg.Connection:
@@ -134,6 +146,7 @@ async def runner() -> None:
                 await _setup_capture(pool, client, account_id, storage)
                 consumer = JobConsumer(client, pool, account_id)
                 consumer_tasks.append(asyncio.create_task(consumer.run()))
+                await _enqueue_sync_dialogs(pool, account_id)
 
         if clients:
             listen_conn = await _listen_changes(clients, reload_tasks)

backend/src/utils/db/models.py

@@ -477,3 +477,18 @@ class Alert(SQLModel, table=True):
             DateTime(timezone=True), nullable=False, server_default=func.now()
         )
     )
+
+
+class Dialog(SQLModel, table=True):
+    __tablename__ = "dialogs"
+
+    account_id: int = Field(primary_key=True)
+    chat_id: int = Field(primary_key=True)
+    updated_at: datetime = Field(
+        sa_column=Column(
+            DateTime(timezone=True),
+            nullable=False,
+            server_default=func.now(),
+            onupdate=func.now(),
+        )
+    )

backend/src/utils/env.py

@@ -34,6 +34,7 @@ class TelegramSettings(BaseSettings):
 class ApiSettings(BaseSettings):
     host: str = "0.0.0.0"  # noqa: S104
     port: int = 8080
+    static_dir: str = "static"
 
 
 class AuthSettings(BaseSettings):

backend/src/utils/events.py

@@ -0,0 +1,29 @@
+import json
+from typing import Literal
+
+import asyncpg
+
+BG_EVENTS_CHANNEL = "bg_events"
+
+EventKind = Literal["message", "edit", "delete", "reaction", "presence", "receipt"]
+
+
+async def notify_bg_event(  # noqa: PLR0913
+    pool: asyncpg.Pool,
+    kind: EventKind,
+    account_id: int,
+    *,
+    chat_id: int | None = None,
+    message_id: int | None = None,
+    message_ids: list[int] | None = None,
+) -> None:
+    payload: dict[str, object] = {"kind": kind, "account_id": account_id}
+    if chat_id is not None:
+        payload["chat_id"] = chat_id
+    if message_id is not None:
+        payload["message_id"] = message_id
+    if message_ids is not None:
+        payload["message_ids"] = message_ids
+    await pool.execute(
+        "SELECT pg_notify($1, $2)", BG_EVENTS_CHANNEL, json.dumps(payload)
+    )

backend/src/utils/read/accounts.py

@@ -0,0 +1,17 @@
+import asyncpg
+
+from utils.read.models import AccountView
+
+
+async def self_user_id(pool: asyncpg.Pool, account_id: int) -> int | None:
+    return await pool.fetchval(
+        "SELECT tg_user_id FROM accounts WHERE account_id = $1", account_id
+    )
+
+
+async def list_accounts(pool: asyncpg.Pool) -> list[AccountView]:
+    rows = await pool.fetch(
+        "SELECT account_id, label, phone, tg_user_id, is_active FROM accounts "
+        "ORDER BY account_id"
+    )
+    return [AccountView(**dict(row)) for row in rows]

backend/src/utils/read/analytics.py

@@ -0,0 +1,69 @@
+from datetime import UTC, datetime, timedelta
+
+import asyncpg
+
+from utils.read.accounts import self_user_id
+from utils.read.models import ResponseStats, VolumeBucket
+
+
+async def message_volume(
+    pool: asyncpg.Pool, account_id: int, chat_id: int, *, days: int = 90
+) -> list[VolumeBucket]:
+    self_id = await self_user_id(pool, account_id)
+    rows = await pool.fetch(
+        "SELECT date_trunc('day', date) AS bucket, count(*) AS total, "
+        "count(*) FILTER (WHERE sender_id = $3) AS outgoing "
+        "FROM messages "
+        "WHERE account_id = $1 AND chat_id = $2 AND date >= $4 "
+        "GROUP BY bucket ORDER BY bucket",
+        account_id,
+        chat_id,
+        self_id,
+        datetime.now(UTC) - timedelta(days=days),
+    )
+    return [
+        VolumeBucket(
+            bucket=row["bucket"],
+            total=row["total"],
+            outgoing=row["outgoing"],
+            incoming=row["total"] - row["outgoing"],
+        )
+        for row in rows
+    ]
+
+
+async def response_stats(
+    pool: asyncpg.Pool, account_id: int, chat_id: int
+) -> ResponseStats:
+    self_id = await self_user_id(pool, account_id)
+    rows = await pool.fetch(
+        "WITH ordered AS ("
+        "SELECT sender_id, date, "
+        "lag(sender_id) OVER w AS prev_sender, "
+        "lag(date) OVER w AS prev_date "
+        "FROM messages "
+        "WHERE account_id = $1 AND chat_id = $2 AND sender_id IS NOT NULL "
+        "WINDOW w AS (ORDER BY date, message_id)), "
+        "resp AS ("
+        "SELECT (sender_id = $3) AS is_mine, "
+        "EXTRACT(EPOCH FROM (date - prev_date)) AS secs "
+        "FROM ordered "
+        "WHERE prev_sender IS NOT NULL AND prev_sender <> sender_id) "
+        "SELECT is_mine, count(*) AS n, "
+        "percentile_cont(0.5) WITHIN GROUP (ORDER BY secs) AS median_secs "
+        "FROM resp GROUP BY is_mine",
+        account_id,
+        chat_id,
+        self_id,
+    )
+    stats = ResponseStats(
+        mine_median_seconds=None, mine_count=0, their_median_seconds=None, their_count=0
+    )
+    for row in rows:
+        if row["is_mine"]:
+            stats.mine_median_seconds = row["median_secs"]
+            stats.mine_count = row["n"]
+        else:
+            stats.their_median_seconds = row["median_secs"]
+            stats.their_count = row["n"]
+    return stats

backend/src/utils/read/avatars.py

@@ -0,0 +1,50 @@
+import asyncpg
+
+from utils.read.models import AvatarHistoryView, AvatarRef
+
+_PEER_UNIQUE_ID = """
+SELECT photo_unique_id FROM peers
+WHERE account_id = $1 AND peer_id = $2
+"""
+
+_CHAT_UNIQUE_ID = """
+SELECT photo_unique_id FROM chat_history
+WHERE account_id = $1 AND chat_id = $2 AND photo_unique_id IS NOT NULL
+ORDER BY ts DESC LIMIT 1
+"""
+
+_AVATAR = """
+SELECT unique_id, storage_key, downloaded, mime FROM avatars
+WHERE account_id = $1 AND owner_id = $2 AND unique_id = $3
+"""
+
+_AVATAR_HISTORY = """
+SELECT unique_id, first_seen_at, downloaded FROM avatars
+WHERE account_id = $1 AND owner_id = $2
+ORDER BY first_seen_at DESC
+"""
+
+
+async def current_avatar(
+    pool: asyncpg.Pool, account_id: int, owner_kind: str, owner_id: int
+) -> AvatarRef | None:
+    query = _PEER_UNIQUE_ID if owner_kind == "peer" else _CHAT_UNIQUE_ID
+    unique_id = await pool.fetchval(query, account_id, owner_id)
+    if unique_id is None:
+        return None
+    row = await pool.fetchrow(_AVATAR, account_id, owner_id, unique_id)
+    return AvatarRef(**dict(row)) if row else None
+
+
+async def avatar_by_unique_id(
+    pool: asyncpg.Pool, account_id: int, owner_id: int, unique_id: str
+) -> AvatarRef | None:
+    row = await pool.fetchrow(_AVATAR, account_id, owner_id, unique_id)
+    return AvatarRef(**dict(row)) if row else None
+
+
+async def avatar_history(
+    pool: asyncpg.Pool, account_id: int, owner_id: int
+) -> list[AvatarHistoryView]:
+    rows = await pool.fetch(_AVATAR_HISTORY, account_id, owner_id)
+    return [AvatarHistoryView(**dict(row)) for row in rows]

backend/src/utils/read/chats.py

@@ -1,13 +1,48 @@
 import asyncpg
 
-from utils.read.models import ChatListItem, MessageVersionView, MessageView, Page
+from utils.read.accounts import self_user_id
+from utils.read.message_view import build_message_view, load_raw, media_ref_from
+from utils.read.models import (
+    ChatListItem,
+    MediaRef,
+    MessageVersionView,
+    MessageView,
+    Page,
+)
+from utils.read.read_receipts import read_up_to
 
 _MESSAGE_COLS = (
-    "chat_id, message_id, date, sender_id, text, "
-    "has_media, is_self_destruct, edited_at, deleted_at"
+    "chat_id, message_id, date, sender_id, text, has_media, is_self_destruct, "
+    "edited_at, deleted_at, raw, raw->>'media_group_id' AS media_group_id"
 )
 
 
+async def _media_map(
+    pool: asyncpg.Pool, account_id: int, rows: list[asyncpg.Record]
+) -> dict[tuple[int, int], asyncpg.Record]:
+    message_ids = list({row["message_id"] for row in rows})
+    if not message_ids:
+        return {}
+    media_rows = await pool.fetch(
+        "SELECT id, chat_id, message_id, kind, downloaded, mime, file_size, "
+        "ttl_seconds FROM media "
+        "WHERE account_id = $1 AND message_id = ANY($2::bigint[])",
+        account_id,
+        message_ids,
+    )
+    return {(row["chat_id"], row["message_id"]): row for row in media_rows}
+
+
+def _single_media(
+    row: asyncpg.Record, raw: dict, media_by_key: dict[tuple[int, int], asyncpg.Record]
+) -> list[MediaRef]:
+    media_row = media_by_key.get((row["chat_id"], row["message_id"]))
+    if not (row["has_media"] or media_row):
+        return []
+    ref = media_ref_from(row["message_id"], raw, media_row)
+    return [ref] if ref else []
+
+
 def _peer_title(
     first: str | None, last: str | None, username: str | None
 ) -> str | None:
@@ -19,18 +54,43 @@ async def list_chats(
     pool: asyncpg.Pool, account_id: int, page: Page
 ) -> list[ChatListItem]:
     rows = await pool.fetch(
-        "SELECT m.chat_id, count(*) AS message_count, max(m.date) AS last_date, "
+        "WITH ids AS ("
+        "SELECT DISTINCT chat_id FROM messages WHERE account_id = $1 "
+        "UNION SELECT chat_id FROM dialogs WHERE account_id = $1), "
+        "agg AS (SELECT chat_id, count(*) AS message_count, max(date) AS last_date "
+        "FROM messages WHERE account_id = $1 GROUP BY chat_id) "
+        "SELECT ids.chat_id, COALESCE(agg.message_count, 0) AS message_count, "
+        "agg.last_date AS last_date, "
         "(SELECT p.first_name FROM peers p "
-        "WHERE p.account_id = $1 AND p.peer_id = m.chat_id) AS first_name, "
+        "WHERE p.account_id = $1 AND p.peer_id = ids.chat_id) AS first_name, "
         "(SELECT p.last_name FROM peers p "
-        "WHERE p.account_id = $1 AND p.peer_id = m.chat_id) AS last_name, "
+        "WHERE p.account_id = $1 AND p.peer_id = ids.chat_id) AS last_name, "
         "(SELECT p.username FROM peers p "
-        "WHERE p.account_id = $1 AND p.peer_id = m.chat_id) AS username, "
+        "WHERE p.account_id = $1 AND p.peer_id = ids.chat_id) AS username, "
         "(SELECT ch.title FROM chat_history ch "
-        "WHERE ch.account_id = $1 AND ch.chat_id = m.chat_id "
-        "AND ch.title IS NOT NULL ORDER BY ch.ts DESC LIMIT 1) AS group_title "
-        "FROM messages m WHERE m.account_id = $1 "
-        "GROUP BY m.chat_id ORDER BY last_date DESC LIMIT $2 OFFSET $3",
+        "WHERE ch.account_id = $1 AND ch.chat_id = ids.chat_id "
+        "AND ch.title IS NOT NULL ORDER BY ch.ts DESC LIMIT 1) AS group_title, "
+        "EXISTS (SELECT 1 FROM avatars a "
+        "WHERE a.account_id = $1 AND a.owner_id = ids.chat_id) AS has_avatar, "
+        "(SELECT COALESCE((p.raw->>'is_bot')::bool, (p.raw->>'bot')::bool, "
+        "p.raw->>'type' = 'ChatType.BOT', false) "
+        "FROM peers p WHERE p.account_id = $1 AND p.peer_id = ids.chat_id) AS is_bot, "
+        "(SELECT COALESCE((p.raw->>'is_contact')::bool, (p.raw->>'contact')::bool, "
+        "false) FROM peers p "
+        "WHERE p.account_id = $1 AND p.peer_id = ids.chat_id) AS is_contact, "
+        "(SELECT COALESCE(ch.raw->'chat'->>'type', ch.raw->>'type') "
+        "= 'ChatType.CHANNEL' FROM chat_history ch "
+        "WHERE ch.account_id = $1 AND ch.chat_id = ids.chat_id "
+        "AND COALESCE(ch.raw->'chat'->>'type', ch.raw->>'type') IS NOT NULL "
+        "ORDER BY ch.ts DESC LIMIT 1) AS is_broadcast, "
+        "(SELECT lm.text FROM messages lm "
+        "WHERE lm.account_id = $1 AND lm.chat_id = ids.chat_id "
+        "ORDER BY lm.date DESC, lm.message_id DESC LIMIT 1) AS last_text, "
+        "(SELECT lm.sender_id FROM messages lm "
+        "WHERE lm.account_id = $1 AND lm.chat_id = ids.chat_id "
+        "ORDER BY lm.date DESC, lm.message_id DESC LIMIT 1) AS last_sender_id "
+        "FROM ids LEFT JOIN agg ON agg.chat_id = ids.chat_id "
+        "ORDER BY last_date DESC NULLS LAST, ids.chat_id DESC LIMIT $2 OFFSET $3",
         account_id,
         page.capped_limit,
         page.offset,
@@ -44,33 +104,124 @@ async def list_chats(
             ChatListItem(
                 chat_id=row["chat_id"],
                 title=title,
+                kind="private" if row["chat_id"] > 0 else "group",
+                has_avatar=row["has_avatar"],
+                is_bot=bool(row["is_bot"]),
+                is_contact=bool(row["is_contact"]),
+                is_broadcast=bool(row["is_broadcast"]),
                 message_count=row["message_count"],
                 last_date=row["last_date"],
+                last_text=row["last_text"],
+                last_sender_id=row["last_sender_id"],
             )
         )
     return items
 
 
-async def get_chat_history(
+async def get_chat_history(  # noqa: PLR0913
     pool: asyncpg.Pool,
     account_id: int,
     chat_id: int,
     page: Page,
     *,
     include_deleted: bool = True,
+    before_id: int | None = None,
+    after_id: int | None = None,
 ) -> list[MessageView]:
     where = "account_id = $1 AND chat_id = $2"
     if not include_deleted:
         where += " AND deleted_at IS NULL"
-    rows = await pool.fetch(
+    params: list[object] = [account_id, chat_id]
+    if after_id is not None:
+        params.append(after_id)
+        where += f" AND message_id > ${len(params)}"
+        order = "date ASC, message_id ASC"
+    elif before_id is not None:
+        params.append(before_id)
+        where += f" AND message_id < ${len(params)}"
+        order = "date DESC, message_id DESC"
+    else:
+        order = "date DESC, message_id DESC"
+    params.append(page.capped_limit)
+    query = (
         f"SELECT {_MESSAGE_COLS} FROM messages WHERE {where} "  # noqa: S608
-        "ORDER BY date DESC, message_id DESC LIMIT $3 OFFSET $4",
+        f"ORDER BY {order} LIMIT ${len(params)}"
+    )
+    if before_id is None and after_id is None:
+        params.append(page.offset)
+        query += f" OFFSET ${len(params)}"
+    rows = await pool.fetch(query, *params)
+    media_by_key = await _media_map(pool, account_id, rows)
+    parsed = [(row, load_raw(row["raw"])) for row in rows]
+    views: list[MessageView] = []
+    index = 0
+    while index < len(parsed):
+        group_id = parsed[index][0]["media_group_id"]
+        end = index + 1
+        if group_id is not None:
+            while end < len(parsed) and parsed[end][0]["media_group_id"] == group_id:
+                end += 1
+        members = parsed[index:end]
+        if len(members) == 1:
+            row, raw = members[0]
+            views.append(
+                build_message_view(row, raw, _single_media(row, raw, media_by_key))
+            )
+        else:
+            views.append(_build_album(members, media_by_key))
+        index = end
+    await _apply_read_status(pool, account_id, chat_id, views)
+    return views
+
+
+async def get_message(
+    pool: asyncpg.Pool, account_id: int, chat_id: int, message_id: int
+) -> MessageView | None:
+    row = await pool.fetchrow(
+        f"SELECT {_MESSAGE_COLS} FROM messages "  # noqa: S608
+        "WHERE account_id = $1 AND chat_id = $2 AND message_id = $3",
         account_id,
         chat_id,
-        page.capped_limit,
-        page.offset,
+        message_id,
     )
-    return [MessageView(**dict(row)) for row in rows]
+    if row is None:
+        return None
+    media_by_key = await _media_map(pool, account_id, [row])
+    raw = load_raw(row["raw"])
+    view = build_message_view(row, raw, _single_media(row, raw, media_by_key))
+    await _apply_read_status(pool, account_id, chat_id, [view])
+    return view
+
+
+async def _apply_read_status(
+    pool: asyncpg.Pool, account_id: int, chat_id: int, views: list[MessageView]
+) -> None:
+    self_id = await self_user_id(pool, account_id)
+    if self_id is None:
+        return
+    marker = await read_up_to(pool, account_id, chat_id)
+    if marker is None:
+        return
+    for view in views:
+        if view.sender_id == self_id and view.message_id <= marker:
+            view.read = True
+
+
+def _build_album(
+    members: list[tuple[asyncpg.Record, dict]],
+    media_by_key: dict[tuple[int, int], asyncpg.Record],
+) -> MessageView:
+    ordered = sorted(members, key=lambda m: m[0]["message_id"])
+    media: list[MediaRef] = []
+    for row, raw in ordered:
+        media_row = media_by_key.get((row["chat_id"], row["message_id"]))
+        ref = media_ref_from(row["message_id"], raw, media_row)
+        if ref:
+            media.append(ref)
+    primary_row, primary_raw = next(
+        ((row, raw) for row, raw in ordered if row["text"]), ordered[0]
+    )
+    return build_message_view(primary_row, primary_raw, media)
 
 
 async def get_deleted_messages(
@@ -88,7 +239,14 @@ async def get_deleted_messages(
         f"ORDER BY deleted_at DESC LIMIT ${len(params) - 1} OFFSET ${len(params)}",
         *params,
     )
-    return [MessageView(**dict(row)) for row in rows]
+    media_by_key = await _media_map(pool, account_id, rows)
+    views: list[MessageView] = []
+    for row in rows:
+        raw = load_raw(row["raw"])
+        views.append(
+            build_message_view(row, raw, _single_media(row, raw, media_by_key))
+        )
+    return views
 
 
 async def get_message_versions(

backend/src/utils/read/custom_emoji.py

@@ -0,0 +1,15 @@
+import asyncpg
+
+from utils.read.models import CustomEmojiRef
+
+_GET = """
+SELECT storage_key, downloaded, mime, kind FROM custom_emoji
+WHERE custom_emoji_id = $1
+"""
+
+
+async def current_custom_emoji(
+    pool: asyncpg.Pool, custom_emoji_id: int
+) -> CustomEmojiRef | None:
+    row = await pool.fetchrow(_GET, custom_emoji_id)
+    return CustomEmojiRef(**dict(row)) if row else None

backend/src/utils/read/media.py

@@ -1,12 +1,54 @@
 import asyncpg
 
-from utils.read.models import MediaView
+from utils.read.message_view import load_raw
+from utils.read.models import MediaVersionView, MediaView
 
 _MEDIA_COLS = (
     "id, account_id, chat_id, message_id, kind, storage_key, file_size, "
     "mime, ttl_seconds, downloaded, extracted_text, created_at"
 )
 
+_VERSION_COLS = "id, kind, storage_key, file_size, mime, observed_at"
+
+_WEB_PAGE_MEDIA_KINDS = ("photo", "video", "animation", "document", "audio")
+
+
+async def _web_page_media_stub(
+    pool: asyncpg.Pool, account_id: int, chat_id: int, message_id: int
+) -> MediaView | None:
+    row = await pool.fetchrow(
+        "SELECT date, raw FROM messages "
+        "WHERE account_id = $1 AND chat_id = $2 AND message_id = $3",
+        account_id,
+        chat_id,
+        message_id,
+    )
+    if row is None:
+        return None
+    web_page = load_raw(row["raw"]).get("web_page")
+    if not isinstance(web_page, dict):
+        return None
+    kind = next(
+        (k for k in _WEB_PAGE_MEDIA_KINDS if isinstance(web_page.get(k), dict)), None
+    )
+    if kind is None:
+        return None
+    obj = web_page[kind]
+    return MediaView(
+        id=0,
+        account_id=account_id,
+        chat_id=chat_id,
+        message_id=message_id,
+        kind=kind,
+        storage_key=None,
+        file_size=obj.get("file_size"),
+        mime=obj.get("mime_type"),
+        ttl_seconds=None,
+        downloaded=False,
+        extracted_text=None,
+        created_at=row["date"],
+    )
+
 
 async def get_media(pool: asyncpg.Pool, media_id: int) -> MediaView | None:
     row = await pool.fetchrow(
@@ -26,4 +68,30 @@ async def get_message_media(
         chat_id,
         message_id,
     )
-    return MediaView(**dict(row)) if row else None
+    if row is not None:
+        return MediaView(**dict(row))
+    return await _web_page_media_stub(pool, account_id, chat_id, message_id)
+
+
+async def get_media_versions(
+    pool: asyncpg.Pool, account_id: int, chat_id: int, message_id: int
+) -> list[MediaVersionView]:
+    rows = await pool.fetch(
+        f"SELECT {_VERSION_COLS} FROM media_versions "  # noqa: S608
+        "WHERE account_id = $1 AND chat_id = $2 AND message_id = $3 "
+        "ORDER BY observed_at",
+        account_id,
+        chat_id,
+        message_id,
+    )
+    return [MediaVersionView(**dict(row)) for row in rows]
+
+
+async def get_media_version(
+    pool: asyncpg.Pool, version_id: int
+) -> MediaVersionView | None:
+    row = await pool.fetchrow(
+        f"SELECT {_VERSION_COLS} FROM media_versions WHERE id = $1",  # noqa: S608
+        version_id,
+    )
+    return MediaVersionView(**dict(row)) if row else None

backend/src/utils/read/message_view.py

@@ -0,0 +1,404 @@
+import json
+from datetime import datetime
+from typing import Any
+
+import asyncpg
+from pydantic import ValidationError
+
+from utils.read.models import (
+    ContactView,
+    EntityView,
+    ForwardView,
+    InlineButton,
+    LocationView,
+    MediaRef,
+    MessageView,
+    PollOption,
+    PollView,
+    ReactionCount,
+    ReplyView,
+    ServiceView,
+    StickerView,
+    WebPageView,
+)
+
+_MEDIA_KEYS = (
+    "photo",
+    "video",
+    "animation",
+    "voice",
+    "video_note",
+    "audio",
+    "document",
+    "sticker",
+)
+
+
+def load_raw(raw: str | None) -> dict[str, Any]:
+    if not raw:
+        return {}
+    try:
+        parsed = json.loads(raw)
+    except (ValueError, TypeError):
+        return {}
+    return parsed if isinstance(parsed, dict) else {}
+
+
+def _enum(value: object) -> str | None:
+    if not isinstance(value, str):
+        return None
+    return value.rsplit(".", 1)[-1].lower()
+
+
+def _parse_dt(value: object) -> datetime | None:
+    if not isinstance(value, str):
+        return None
+    try:
+        return datetime.fromisoformat(value)
+    except ValueError:
+        return None
+
+
+def _peer_name(user: dict[str, Any]) -> str | None:
+    name = " ".join(
+        part for part in (user.get("first_name"), user.get("last_name")) if part
+    )
+    return name or user.get("username")
+
+
+def _entities(raw: dict[str, Any]) -> list[EntityView]:
+    source = raw.get("entities") or raw.get("caption_entities") or []
+    if not isinstance(source, list):
+        return []
+    out: list[EntityView] = []
+    for item in source:
+        if not isinstance(item, dict):
+            continue
+        kind = _enum(item.get("type"))
+        offset = item.get("offset")
+        length = item.get("length")
+        if kind is None or not isinstance(offset, int) or not isinstance(length, int):
+            continue
+        custom = item.get("custom_emoji_id")
+        out.append(
+            EntityView(
+                type=kind,
+                offset=offset,
+                length=length,
+                url=item.get("url"),
+                custom_emoji_id=str(custom) if custom is not None else None,
+                language=item.get("language"),
+            )
+        )
+    return out
+
+
+def _media_kind(message: dict[str, Any]) -> str | None:
+    kind = _enum(message.get("media"))
+    if kind:
+        return kind
+    for key in _MEDIA_KEYS:
+        if key in message:
+            return key
+    return None
+
+
+def _reply(raw: dict[str, Any]) -> ReplyView | None:
+    reply = raw.get("reply_to_message")
+    reply_id = raw.get("reply_to_message_id")
+    if not isinstance(reply, dict):
+        return ReplyView(message_id=reply_id) if reply_id else None
+    sender = reply.get("from_user")
+    sender_chat = reply.get("sender_chat")
+    sender_id = None
+    sender_name = None
+    if isinstance(sender, dict):
+        sender_id = sender.get("id")
+        sender_name = _peer_name(sender)
+    elif isinstance(sender_chat, dict):
+        sender_id = sender_chat.get("id")
+        sender_name = sender_chat.get("title")
+    return ReplyView(
+        message_id=reply.get("id") or reply_id,
+        sender_id=sender_id,
+        sender_name=sender_name,
+        text=reply.get("text") or reply.get("caption"),
+        media_kind=_media_kind(reply),
+    )
+
+
+def _forward(raw: dict[str, Any]) -> ForwardView | None:
+    origin = raw.get("forward_origin")
+    if not isinstance(origin, dict):
+        return None
+    tag = origin.get("_")
+    date = _parse_dt(origin.get("date"))
+    if tag == "MessageOriginUser":
+        user = origin.get("sender_user")
+        user = user if isinstance(user, dict) else {}
+        return ForwardView(
+            kind="user", from_id=user.get("id"), from_name=_peer_name(user), date=date
+        )
+    if tag == "MessageOriginChannel":
+        chat = origin.get("chat")
+        chat = chat if isinstance(chat, dict) else {}
+        return ForwardView(
+            kind="channel",
+            chat_id=chat.get("id"),
+            chat_title=chat.get("title"),
+            message_id=origin.get("message_id"),
+            signature=origin.get("author_signature"),
+            date=date,
+        )
+    return ForwardView(
+        kind="hidden", from_name=origin.get("sender_user_name"), date=date
+    )
+
+
+def _reactions(raw: dict[str, Any]) -> list[ReactionCount]:
+    container = raw.get("reactions")
+    if not isinstance(container, dict):
+        return []
+    items = container.get("reactions")
+    if not isinstance(items, list):
+        return []
+    out: list[ReactionCount] = []
+    for item in items:
+        if not isinstance(item, dict):
+            continue
+        custom = item.get("custom_emoji_id")
+        out.append(
+            ReactionCount(
+                emoji=item.get("emoji"),
+                custom_emoji_id=str(custom) if custom is not None else None,
+                count=item.get("count") or 0,
+                chosen="chosen_order" in item,
+            )
+        )
+    return out
+
+
+def _button_kind(button: dict[str, Any]) -> str:
+    if button.get("url"):
+        return "url"
+    if button.get("callback_data") is not None:
+        return "callback"
+    if "switch_inline_query" in button or "switch_inline_query_current_chat" in button:
+        return "switch"
+    return "other"
+
+
+def _inline_buttons(raw: dict[str, Any]) -> list[list[InlineButton]]:
+    markup = raw.get("reply_markup")
+    if not isinstance(markup, dict):
+        return []
+    rows = markup.get("inline_keyboard")
+    if not isinstance(rows, list):
+        return []
+    out: list[list[InlineButton]] = []
+    for row in rows:
+        if not isinstance(row, list):
+            continue
+        buttons: list[InlineButton] = []
+        for button in row:
+            if not isinstance(button, dict):
+                continue
+            data = button.get("callback_data")
+            buttons.append(
+                InlineButton(
+                    text=button.get("text") or "",
+                    kind=_button_kind(button),
+                    url=button.get("url"),
+                    data=data if isinstance(data, str) else None,
+                )
+            )
+        if buttons:
+            out.append(buttons)
+    return out
+
+
+def _web_page(raw: dict[str, Any]) -> WebPageView | None:
+    page = raw.get("web_page")
+    if not isinstance(page, dict) or not page.get("url"):
+        return None
+    return WebPageView(
+        url=page["url"],
+        display_url=page.get("display_url"),
+        type=page.get("type"),
+        site_name=page.get("site_name"),
+        title=page.get("title"),
+        description=page.get("description"),
+        has_photo="photo" in page,
+    )
+
+
+def _text_of(value: dict[str, Any] | str | None) -> str | None:
+    if isinstance(value, dict):
+        text = value.get("text")
+        return text if isinstance(text, str) else None
+    return value if isinstance(value, str) else None
+
+
+def _poll(raw: dict[str, Any]) -> PollView | None:
+    poll = raw.get("poll")
+    if not isinstance(poll, dict):
+        return None
+    raw_options = poll.get("options")
+    options: list[PollOption] = []
+    if isinstance(raw_options, list):
+        for option in raw_options:
+            if not isinstance(option, dict):
+                continue
+            options.append(
+                PollOption(
+                    text=_text_of(option.get("text")) or "",
+                    voter_count=option.get("voter_count") or 0,
+                    vote_percentage=option.get("vote_percentage") or 0,
+                    correct=option.get("is_correct"),
+                )
+            )
+    return PollView(
+        question=_text_of(poll.get("question")) or "",
+        options=options,
+        total_voter_count=poll.get("total_voter_count") or 0,
+        quiz=_enum(poll.get("type")) == "quiz",
+        closed=bool(poll.get("is_closed")),
+        multiple=bool(poll.get("allows_multiple_answers")),
+        anonymous=bool(poll.get("is_anonymous", True)),
+    )
+
+
+def _contact(raw: dict[str, Any]) -> ContactView | None:
+    contact = raw.get("contact")
+    if not isinstance(contact, dict):
+        return None
+    return ContactView(
+        user_id=contact.get("user_id"),
+        first_name=contact.get("first_name"),
+        last_name=contact.get("last_name"),
+        phone_number=contact.get("phone_number"),
+    )
+
+
+def _location(raw: dict[str, Any]) -> LocationView | None:
+    venue = raw.get("venue")
+    if isinstance(venue, dict):
+        point = venue.get("location")
+        point = point if isinstance(point, dict) else {}
+        return LocationView(
+            latitude=point.get("latitude"),
+            longitude=point.get("longitude"),
+            title=venue.get("title"),
+            address=venue.get("address"),
+        )
+    point = raw.get("location")
+    if not isinstance(point, dict):
+        return None
+    return LocationView(
+        latitude=point.get("latitude"), longitude=point.get("longitude")
+    )
+
+
+def _service(raw: dict[str, Any]) -> ServiceView | None:
+    kind = _enum(raw.get("service"))
+    if kind is None:
+        return None
+    members = raw.get("new_chat_members") or raw.get("left_chat_member")
+    member_ids = None
+    if isinstance(members, list):
+        member_ids = [m["id"] for m in members if isinstance(m, dict) and "id" in m]
+    elif isinstance(members, dict) and "id" in members:
+        member_ids = [members["id"]]
+    pinned = raw.get("pinned_message")
+    call = raw.get("phone_call_ended")
+    return ServiceView(
+        kind=kind,
+        member_ids=member_ids,
+        pinned_message_id=pinned.get("id") if isinstance(pinned, dict) else None,
+        duration=call.get("duration") if isinstance(call, dict) else None,
+    )
+
+
+def _sticker(raw: dict[str, Any]) -> StickerView | None:
+    sticker = raw.get("sticker")
+    if not isinstance(sticker, dict):
+        return None
+    return StickerView(
+        emoji=sticker.get("emoji"),
+        set_name=sticker.get("set_name"),
+        width=sticker.get("width"),
+        height=sticker.get("height"),
+        mime=sticker.get("mime_type"),
+        is_animated=bool(sticker.get("is_animated")),
+        is_video=bool(sticker.get("is_video")),
+    )
+
+
+def media_ref_from(
+    message_id: int, raw: dict[str, Any], media_row: asyncpg.Record | None
+) -> MediaRef | None:
+    kind = (media_row["kind"] if media_row else None) or _media_kind(raw)
+    if kind is None:
+        return None
+    obj = raw.get(kind)
+    obj = obj if isinstance(obj, dict) else {}
+    width = obj.get("width") or obj.get("length")
+    height = obj.get("height") or obj.get("length")
+    return MediaRef(
+        message_id=message_id,
+        id=media_row["id"] if media_row else None,
+        kind=kind,
+        downloaded=bool(media_row["downloaded"]) if media_row else False,
+        width=width,
+        height=height,
+        duration=obj.get("duration"),
+        mime=(media_row["mime"] if media_row else None) or obj.get("mime_type"),
+        file_size=(media_row["file_size"] if media_row else None)
+        or obj.get("file_size"),
+        ttl_seconds=media_row["ttl_seconds"] if media_row else None,
+    )
+
+
+def _base_fields(row: asyncpg.Record) -> dict[str, Any]:
+    return {
+        "chat_id": row["chat_id"],
+        "message_id": row["message_id"],
+        "date": row["date"],
+        "sender_id": row["sender_id"],
+        "text": row["text"],
+        "has_media": row["has_media"],
+        "is_self_destruct": row["is_self_destruct"],
+        "edited_at": row["edited_at"],
+        "deleted_at": row["deleted_at"],
+        "media_group_id": row["media_group_id"],
+    }
+
+
+def build_message_view(
+    row: asyncpg.Record, raw: dict[str, Any], media: list[MediaRef]
+) -> MessageView:
+    base = _base_fields(row)
+    via_bot = raw.get("via_bot")
+    sticker = _sticker(raw)
+    try:
+        return MessageView(
+            **base,
+            entities=_entities(raw),
+            quote=_text_of(raw.get("quote")),
+            reply=_reply(raw),
+            forward=_forward(raw),
+            media=media,
+            reactions=_reactions(raw),
+            inline_buttons=_inline_buttons(raw),
+            web_page=_web_page(raw),
+            poll=_poll(raw),
+            contact=_contact(raw),
+            location=_location(raw),
+            service=_service(raw),
+            via_bot_id=via_bot.get("id") if isinstance(via_bot, dict) else None,
+            sticker=sticker,
+            is_sticker=sticker is not None,
+            is_animated_emoji=False,
+        )
+    except ValidationError:
+        return MessageView(**base, media=media)

backend/src/utils/read/models.py

@@ -16,11 +16,146 @@ class Page(BaseModel):
         return min(self.limit, MAX_LIMIT)
 
 
+class AccountView(BaseModel):
+    account_id: int
+    label: str | None
+    phone: str | None
+    tg_user_id: int | None
+    is_active: bool
+
+
 class ChatListItem(BaseModel):
     chat_id: int
     title: str | None
+    kind: str
+    has_avatar: bool
+    is_bot: bool
+    is_contact: bool
+    is_broadcast: bool
     message_count: int
     last_date: datetime | None
+    last_text: str | None
+    last_sender_id: int | None
+
+
+class EntityView(BaseModel):
+    type: str
+    offset: int
+    length: int
+    url: str | None = None
+    custom_emoji_id: str | None = None
+    language: str | None = None
+
+
+class ReplyView(BaseModel):
+    message_id: int | None = None
+    sender_id: int | None = None
+    sender_name: str | None = None
+    text: str | None = None
+    media_kind: str | None = None
+
+
+class ForwardView(BaseModel):
+    kind: str
+    from_id: int | None = None
+    from_name: str | None = None
+    chat_id: int | None = None
+    chat_title: str | None = None
+    message_id: int | None = None
+    date: datetime | None = None
+    signature: str | None = None
+
+
+class MediaRef(BaseModel):
+    message_id: int
+    id: int | None = None
+    kind: str
+    downloaded: bool = False
+    width: int | None = None
+    height: int | None = None
+    duration: float | None = None
+    mime: str | None = None
+    file_size: int | None = None
+    ttl_seconds: int | None = None
+
+
+class ReactionCount(BaseModel):
+    emoji: str | None = None
+    custom_emoji_id: str | None = None
+    count: int
+    chosen: bool = False
+
+
+class InlineButton(BaseModel):
+    text: str
+    kind: str
+    url: str | None = None
+    data: str | None = None
+
+
+class WebPageView(BaseModel):
+    url: str
+    display_url: str | None = None
+    type: str | None = None
+    site_name: str | None = None
+    title: str | None = None
+    description: str | None = None
+    has_photo: bool = False
+
+
+class PollOption(BaseModel):
+    text: str
+    voter_count: int = 0
+    vote_percentage: int = 0
+    correct: bool | None = None
+
+
+class PollView(BaseModel):
+    question: str
+    options: list[PollOption] = []
+    total_voter_count: int = 0
+    quiz: bool = False
+    closed: bool = False
+    multiple: bool = False
+    anonymous: bool = True
+
+
+class ContactView(BaseModel):
+    user_id: int | None = None
+    first_name: str | None = None
+    last_name: str | None = None
+    phone_number: str | None = None
+
+
+class LocationView(BaseModel):
+    latitude: float | None = None
+    longitude: float | None = None
+    title: str | None = None
+    address: str | None = None
+
+
+class ServiceView(BaseModel):
+    kind: str
+    member_ids: list[int] | None = None
+    pinned_message_id: int | None = None
+    duration: int | None = None
+
+
+class PinnedView(BaseModel):
+    message_id: int
+    text: str | None = None
+    media_kind: str | None = None
+    sender_name: str | None = None
+
+
+class StickerView(BaseModel):
+    emoji: str | None = None
+    set_name: str | None = None
+    width: int | None = None
+    height: int | None = None
+    mime: str | None = None
+    is_animated: bool = False
+    is_video: bool = False
 
 
 class MessageView(BaseModel):
@@ -33,6 +168,24 @@ class MessageView(BaseModel):
     is_self_destruct: bool
     edited_at: datetime | None
     deleted_at: datetime | None
+    entities: list[EntityView] = []
+    quote: str | None = None
+    reply: ReplyView | None = None
+    forward: ForwardView | None = None
+    media_group_id: str | None = None
+    media: list[MediaRef] = []
+    reactions: list[ReactionCount] = []
+    inline_buttons: list[list[InlineButton]] = []
+    web_page: WebPageView | None = None
+    poll: PollView | None = None
+    contact: ContactView | None = None
+    location: LocationView | None = None
+    service: ServiceView | None = None
+    via_bot_id: int | None = None
+    sticker: StickerView | None = None
+    is_sticker: bool = False
+    is_animated_emoji: bool = False
+    read: bool = False
 
 
 class MessageVersionView(BaseModel):
@@ -56,6 +209,35 @@ class MediaView(BaseModel):
     created_at: datetime
 
 
+class MediaVersionView(BaseModel):
+    id: int
+    kind: str
+    storage_key: str
+    file_size: int | None
+    mime: str | None
+    observed_at: datetime
+
+
+class AvatarRef(BaseModel):
+    unique_id: str
+    storage_key: str | None
+    downloaded: bool
+    mime: str | None
+
+
+class AvatarHistoryView(BaseModel):
+    unique_id: str
+    first_seen_at: datetime
+    downloaded: bool
+
+
+class CustomEmojiRef(BaseModel):
+    storage_key: str | None
+    downloaded: bool
+    mime: str | None
+    kind: str | None
+
+
 class CallbackView(BaseModel):
     position: int
     label: str | None
@@ -95,6 +277,20 @@ class PresenceHourly(BaseModel):
     last_seen: datetime | None
 
 
+class VolumeBucket(BaseModel):
+    bucket: datetime
+    total: int
+    outgoing: int
+    incoming: int
+
+
+class ResponseStats(BaseModel):
+    mine_median_seconds: float | None
+    mine_count: int
+    their_median_seconds: float | None
+    their_count: int
+
+
 class PeerView(BaseModel):
     peer_id: int
     first_name: str | None
@@ -103,6 +299,7 @@ class PeerView(BaseModel):
     phone: str | None
     photo_unique_id: str | None
     is_deleted_account: bool
+    has_avatar: bool
     updated_at: datetime
 
 
@@ -116,6 +313,27 @@ class PeerHistoryView(BaseModel):
     is_deleted_account: bool
 
 
+class ChatLinkView(BaseModel):
+    message_id: int
+    date: datetime | None
+    url: str
+    kind: str
+    web_url: str | None
+    web_title: str | None
+    web_site_name: str | None
+
+
+class DayCount(BaseModel):
+    day: datetime
+    count: int
+    outgoing: int
+
+
+class MessageAt(BaseModel):
+    message_id: int
+    date: datetime
+
+
 class StoryView(BaseModel):
     peer_id: int
     story_id: int

backend/src/utils/read/peers.py

@@ -2,13 +2,19 @@ import asyncpg
 
 from utils.read.models import Page, PeerHistoryView, PeerView, StoryView
 
+_PEER_COLS = (
+    "peer_id, first_name, last_name, username, phone, photo_unique_id, "
+    "is_deleted_account, updated_at, "
+    "EXISTS (SELECT 1 FROM avatars a WHERE a.account_id = peers.account_id "
+    "AND a.owner_id = peers.peer_id) AS has_avatar"
+)
+
 
 async def get_peer(
     pool: asyncpg.Pool, account_id: int, peer_id: int
 ) -> PeerView | None:
     row = await pool.fetchrow(
-        "SELECT peer_id, first_name, last_name, username, phone, "
-        "photo_unique_id, is_deleted_account, updated_at FROM peers "
+        f"SELECT {_PEER_COLS} FROM peers "  # noqa: S608
         "WHERE account_id = $1 AND peer_id = $2",
         account_id,
         peer_id,
@@ -16,6 +22,20 @@ async def get_peer(
     return PeerView(**dict(row)) if row else None
 
 
+async def get_peers(
+    pool: asyncpg.Pool, account_id: int, ids: list[int]
+) -> list[PeerView]:
+    if not ids:
+        return []
+    rows = await pool.fetch(
+        f"SELECT {_PEER_COLS} FROM peers "  # noqa: S608
+        "WHERE account_id = $1 AND peer_id = ANY($2)",
+        account_id,
+        ids,
+    )
+    return [PeerView(**dict(row)) for row in rows]
+
+
 async def get_peer_history(
     pool: asyncpg.Pool, account_id: int, peer_id: int
 ) -> list[PeerHistoryView]:
@@ -48,3 +68,17 @@ async def get_stories(
         *params,
     )
     return [StoryView(**dict(row)) for row in rows]
+
+
+async def get_story(
+    pool: asyncpg.Pool, account_id: int, peer_id: int, story_id: int
+) -> StoryView | None:
+    row = await pool.fetchrow(
+        "SELECT peer_id, story_id, date, expire_date, caption, media_kind, "
+        "storage_key, downloaded, views, pinned, deleted FROM stories "
+        "WHERE account_id = $1 AND peer_id = $2 AND story_id = $3",
+        account_id,
+        peer_id,
+        story_id,
+    )
+    return StoryView(**dict(row)) if row else None

backend/src/utils/read/pinned.py

@@ -0,0 +1,32 @@
+import asyncpg
+
+from utils.read.message_view import _media_kind, _peer_name, load_raw
+from utils.read.models import PinnedView
+
+_PINNED_SQL = (
+    "SELECT raw FROM messages "
+    "WHERE account_id = $1 AND chat_id = $2 "
+    "AND raw->>'service' LIKE '%PINNED_MESSAGE%' "
+    "ORDER BY date DESC, message_id DESC LIMIT 1"
+)
+
+
+async def get_pinned(
+    pool: asyncpg.Pool, account_id: int, chat_id: int
+) -> PinnedView | None:
+    row = await pool.fetchrow(_PINNED_SQL, account_id, chat_id)
+    if row is None:
+        return None
+    pinned = load_raw(row["raw"]).get("pinned_message")
+    if not isinstance(pinned, dict):
+        return None
+    message_id = pinned.get("id")
+    if message_id is None:
+        return None
+    sender = pinned.get("from_user")
+    return PinnedView(
+        message_id=message_id,
+        text=pinned.get("text") or pinned.get("caption"),
+        media_kind=_media_kind(pinned),
+        sender_name=_peer_name(sender) if isinstance(sender, dict) else None,
+    )

backend/src/utils/read/presence.py

@@ -33,6 +33,19 @@ async def presence_history(  # noqa: PLR0913
     return [PresenceSample(**dict(row)) for row in rows]
 
 
+async def current_presence(
+    pool: asyncpg.Pool, account_id: int, peer_id: int
+) -> PresenceSample | None:
+    row = await pool.fetchrow(
+        "SELECT peer_id, ts, status, last_online_date, next_offline_date "
+        "FROM presence WHERE account_id = $1 AND peer_id = $2 "
+        "ORDER BY ts DESC LIMIT 1",
+        account_id,
+        peer_id,
+    )
+    return PresenceSample(**dict(row)) if row is not None else None
+
+
 async def presence_hourly(
     pool: asyncpg.Pool,
     account_id: int,

backend/src/utils/read/profile.py

@@ -0,0 +1,76 @@
+from datetime import datetime, timedelta
+
+import asyncpg
+
+from utils.read.accounts import self_user_id
+from utils.read.models import ChatLinkView, DayCount, MediaView, MessageAt, Page
+
+_MEDIA_COLS = (
+    "id, account_id, chat_id, message_id, kind, storage_key, file_size, "
+    "mime, ttl_seconds, downloaded, extracted_text, created_at"
+)
+
+
+async def chat_media(
+    pool: asyncpg.Pool, account_id: int, chat_id: int, kinds: list[str], page: Page
+) -> list[MediaView]:
+    rows = await pool.fetch(
+        f"SELECT {_MEDIA_COLS} FROM media "  # noqa: S608
+        "WHERE account_id = $1 AND chat_id = $2 AND kind = ANY($3) "
+        "ORDER BY message_id DESC LIMIT $4 OFFSET $5",
+        account_id,
+        chat_id,
+        kinds,
+        page.capped_limit,
+        page.offset,
+    )
+    return [MediaView(**dict(row)) for row in rows]
+
+
+async def chat_links(
+    pool: asyncpg.Pool, account_id: int, chat_id: int, page: Page
+) -> list[ChatLinkView]:
+    rows = await pool.fetch(
+        "SELECT l.message_id, m.date, l.url, l.kind, l.web_url, "
+        "l.web_title, l.web_site_name FROM links l "
+        "LEFT JOIN messages m ON m.account_id = l.account_id "
+        "AND m.chat_id = l.chat_id AND m.message_id = l.message_id "
+        "WHERE l.account_id = $1 AND l.chat_id = $2 "
+        "ORDER BY l.message_id DESC, l.position LIMIT $3 OFFSET $4",
+        account_id,
+        chat_id,
+        page.capped_limit,
+        page.offset,
+    )
+    return [ChatLinkView(**dict(row)) for row in rows]
+
+
+async def daily_counts(
+    pool: asyncpg.Pool, account_id: int, chat_id: int
+) -> list[DayCount]:
+    self_id = await self_user_id(pool, account_id)
+    rows = await pool.fetch(
+        "SELECT date_trunc('day', date) AS day, count(*) AS count, "
+        "count(*) FILTER (WHERE sender_id = $3) AS outgoing FROM messages "
+        "WHERE account_id = $1 AND chat_id = $2 "
+        "GROUP BY day ORDER BY day",
+        account_id,
+        chat_id,
+        self_id,
+    )
+    return [DayCount(**dict(row)) for row in rows]
+
+
+async def first_message_on_day(
+    pool: asyncpg.Pool, account_id: int, chat_id: int, day: datetime
+) -> MessageAt | None:
+    row = await pool.fetchrow(
+        "SELECT message_id, date FROM messages "
+        "WHERE account_id = $1 AND chat_id = $2 AND date >= $3 AND date < $4 "
+        "ORDER BY date, message_id LIMIT 1",
+        account_id,
+        chat_id,
+        day,
+        day + timedelta(days=1),
+    )
+    return MessageAt(**dict(row)) if row else None

backend/src/utils/read/read_receipts.py

@@ -0,0 +1,10 @@
+import asyncpg
+
+
+async def read_up_to(pool: asyncpg.Pool, account_id: int, chat_id: int) -> int | None:
+    return await pool.fetchval(
+        "SELECT max(message_id) FROM read_receipts "
+        "WHERE account_id = $1 AND chat_id = $2 AND kind = 'read'",
+        account_id,
+        chat_id,
+    )

docker-compose.override.yml.example

@@ -6,3 +6,7 @@ services:
   api:
     ports:
       - "127.0.0.1:8080:8080"
+
+  frontend-dev:
+    ports:
+      - "127.0.0.1:5173:5173"

docker-compose.yml

@@ -72,5 +72,19 @@ services:
     entrypoint: [alembic]
     command: [upgrade, head]
 
+  frontend-dev:
+    image: oven/bun:1
+    profiles: [frontend]
+    working_dir: /app
+    command: ["sh", "-c", "bun install && bun run dev --host 0.0.0.0 --port 5173"]
+    environment:
+      API_PROXY_TARGET: http://api:8080
+    volumes:
+      - ./frontend:/app
+      - frontend_node_modules:/app/node_modules
+      - frontend_svelte_kit:/app/.svelte-kit
+
 volumes:
   pgdata:
+  frontend_node_modules:
+  frontend_svelte_kit:

frontend/LICENSE

@@ -0,0 +1,689 @@
+Beavergram frontend
+Copyright (C) 2026 Beavergram contributors
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+Portions of the UI (styles, icon font, and component structure) are
+ported from Telegram A (telegram-tt), Copyright (C) Telegram-tt
+contributors, also licensed under GPL-3.0:
+https://github.com/Ajaxy/telegram-tt
+
+----------------------------------------------------------------------
+
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
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+country that you have reason to believe are valid.
+
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Use with the GNU Affero General Public License.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
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+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

frontend/biome.jsonc

@@ -26,6 +26,7 @@
         "rules": {
           "correctness": {
             "noUndeclaredVariables": "off",
+            "noUnusedFunctionParameters": "off",
             "noUnusedVariables": "off"
           },
           "style": {
@@ -52,6 +53,17 @@
       "includes": ["src/app.html"],
       "linter": { "enabled": false },
       "formatter": { "enabled": false }
+    },
+    {
+      "includes": ["src/lib/styles/**"],
+      "linter": {
+        "rules": {
+          "suspicious": {
+            "noDuplicateProperties": "off"
+          }
+        }
+      },
+      "formatter": { "enabled": false }
     }
   ]
 }

frontend/bun.lock

@@ -1,8 +1,14 @@
 {
   "lockfileVersion": 1,
+  "configVersion": 0,
   "workspaces": {
     "": {
       "name": "frontend",
+      "dependencies": {
+        "bits-ui": "^2.18.1",
+        "lottie-web": "^5.13.0",
+        "pako": "^2.1.0",
+      },
       "devDependencies": {
         "@biomejs/biome": "2.4.15",
         "@sveltejs/adapter-auto": "^7.0.1",
@@ -11,6 +17,9 @@
         "@sveltejs/vite-plugin-svelte": "^7.0.0",
         "@tailwindcss/typography": "^0.5.19",
         "@tailwindcss/vite": "^4.2.2",
+        "@types/node": "^25.9.1",
+        "@types/pako": "^2.0.4",
+        "sass": "^1.100.0",
         "svelte": "^5.55.2",
         "svelte-check": "^4.4.6",
         "tailwindcss": "^4.2.2",
@@ -49,6 +58,14 @@
 
     "@emnapi/wasi-threads": ["@emnapi/wasi-threads@1.2.1", "", { "dependencies": { "tslib": "^2.4.0" } }, "sha512-uTII7OYF+/Mes/MrcIOYp5yOtSMLBWSIoLPpcgwipoiKbli6k322tcoFsxoIIxPDqW01SQGAgko4EzZi2BNv2w=="],
 
+    "@floating-ui/core": ["@floating-ui/core@1.7.5", "", { "dependencies": { "@floating-ui/utils": "^0.2.11" } }, "sha512-1Ih4WTWyw0+lKyFMcBHGbb5U5FtuHJuujoyyr5zTaWS5EYMeT6Jb2AuDeftsCsEuchO+mM2ij5+q9crhydzLhQ=="],
+
+    "@floating-ui/dom": ["@floating-ui/dom@1.7.6", "", { "dependencies": { "@floating-ui/core": "^1.7.5", "@floating-ui/utils": "^0.2.11" } }, "sha512-9gZSAI5XM36880PPMm//9dfiEngYoC6Am2izES1FF406YFsjvyBMmeJ2g4SAju3xWwtuynNRFL2s9hgxpLI5SQ=="],
+
+    "@floating-ui/utils": ["@floating-ui/utils@0.2.11", "", {}, "sha512-RiB/yIh78pcIxl6lLMG0CgBXAZ2Y0eVHqMPYugu+9U0AeT6YBeiJpf7lbdJNIugFP5SIjwNRgo4DhR1Qxi26Gg=="],
+
+    "@internationalized/date": ["@internationalized/date@3.12.2", "", { "dependencies": { "@swc/helpers": "^0.5.0" } }, "sha512-FY1Y+H64NDs+HAF6omlnWxm3mEpfgaCSWtL5l551ZZfImA+kGjPFgrnJrGjH6lfmLL0g8Z/mBu1R3kufeCp6Jw=="],
+
     "@jridgewell/gen-mapping": ["@jridgewell/gen-mapping@0.3.13", "", { "dependencies": { "@jridgewell/sourcemap-codec": "^1.5.0", "@jridgewell/trace-mapping": "^0.3.24" } }, "sha512-2kkt/7niJ6MgEPxF0bYdQ6etZaA+fQvDcLKckhy1yIQOzaoKjBBjSj63/aLVjYE3qhRt5dvM+uUyfCg6UKCBbA=="],
 
     "@jridgewell/remapping": ["@jridgewell/remapping@2.3.5", "", { "dependencies": { "@jridgewell/gen-mapping": "^0.3.5", "@jridgewell/trace-mapping": "^0.3.24" } }, "sha512-LI9u/+laYG4Ds1TDKSJW2YPrIlcVYOwi2fUC6xB43lueCjgxV4lffOCZCtYFiH6TNOX+tQKXx97T4IKHbhyHEQ=="],
@@ -63,6 +80,34 @@
 
     "@oxc-project/types": ["@oxc-project/types@0.132.0", "", {}, "sha512-FESMOxil5Se014ui/Eq8fT5uHJo6nIRwH0PfJrZJXs6Gek3ZVFOrpUv3YIZT20m+extU98Hg1Ym72U58rlsxUQ=="],
 
+    "@parcel/watcher": ["@parcel/watcher@2.5.6", "", { "dependencies": { "detect-libc": "^2.0.3", "is-glob": "^4.0.3", "node-addon-api": "^7.0.0", "picomatch": "^4.0.3" }, "optionalDependencies": { "@parcel/watcher-android-arm64": "2.5.6", "@parcel/watcher-darwin-arm64": "2.5.6", "@parcel/watcher-darwin-x64": "2.5.6", "@parcel/watcher-freebsd-x64": "2.5.6", "@parcel/watcher-linux-arm-glibc": "2.5.6", "@parcel/watcher-linux-arm-musl": "2.5.6", "@parcel/watcher-linux-arm64-glibc": "2.5.6", "@parcel/watcher-linux-arm64-musl": "2.5.6", "@parcel/watcher-linux-x64-glibc": "2.5.6", "@parcel/watcher-linux-x64-musl": "2.5.6", "@parcel/watcher-win32-arm64": "2.5.6", "@parcel/watcher-win32-ia32": "2.5.6", "@parcel/watcher-win32-x64": "2.5.6" } }, "sha512-tmmZ3lQxAe/k/+rNnXQRawJ4NjxO2hqiOLTHvWchtGZULp4RyFeh6aU4XdOYBFe2KE1oShQTv4AblOs2iOrNnQ=="],
+
+    "@parcel/watcher-android-arm64": ["@parcel/watcher-android-arm64@2.5.6", "", { "os": "android", "cpu": "arm64" }, "sha512-YQxSS34tPF/6ZG7r/Ih9xy+kP/WwediEUsqmtf0cuCV5TPPKw/PQHRhueUo6JdeFJaqV3pyjm0GdYjZotbRt/A=="],
+
+    "@parcel/watcher-darwin-arm64": ["@parcel/watcher-darwin-arm64@2.5.6", "", { "os": "darwin", "cpu": "arm64" }, "sha512-Z2ZdrnwyXvvvdtRHLmM4knydIdU9adO3D4n/0cVipF3rRiwP+3/sfzpAwA/qKFL6i1ModaabkU7IbpeMBgiVEA=="],
+
+    "@parcel/watcher-darwin-x64": ["@parcel/watcher-darwin-x64@2.5.6", "", { "os": "darwin", "cpu": "x64" }, "sha512-HgvOf3W9dhithcwOWX9uDZyn1lW9R+7tPZ4sug+NGrGIo4Rk1hAXLEbcH1TQSqxts0NYXXlOWqVpvS1SFS4fRg=="],
+
+    "@parcel/watcher-freebsd-x64": ["@parcel/watcher-freebsd-x64@2.5.6", "", { "os": "freebsd", "cpu": "x64" }, "sha512-vJVi8yd/qzJxEKHkeemh7w3YAn6RJCtYlE4HPMoVnCpIXEzSrxErBW5SJBgKLbXU3WdIpkjBTeUNtyBVn8TRng=="],
+
+    "@parcel/watcher-linux-arm-glibc": ["@parcel/watcher-linux-arm-glibc@2.5.6", "", { "os": "linux", "cpu": "arm" }, "sha512-9JiYfB6h6BgV50CCfasfLf/uvOcJskMSwcdH1PHH9rvS1IrNy8zad6IUVPVUfmXr+u+Km9IxcfMLzgdOudz9EQ=="],
+
+    "@parcel/watcher-linux-arm-musl": ["@parcel/watcher-linux-arm-musl@2.5.6", "", { "os": "linux", "cpu": "arm" }, "sha512-Ve3gUCG57nuUUSyjBq/MAM0CzArtuIOxsBdQ+ftz6ho8n7s1i9E1Nmk/xmP323r2YL0SONs1EuwqBp2u1k5fxg=="],
+
+    "@parcel/watcher-linux-arm64-glibc": ["@parcel/watcher-linux-arm64-glibc@2.5.6", "", { "os": "linux", "cpu": "arm64" }, "sha512-f2g/DT3NhGPdBmMWYoxixqYr3v/UXcmLOYy16Bx0TM20Tchduwr4EaCbmxh1321TABqPGDpS8D/ggOTaljijOA=="],
+
+    "@parcel/watcher-linux-arm64-musl": ["@parcel/watcher-linux-arm64-musl@2.5.6", "", { "os": "linux", "cpu": "arm64" }, "sha512-qb6naMDGlbCwdhLj6hgoVKJl2odL34z2sqkC7Z6kzir8b5W65WYDpLB6R06KabvZdgoHI/zxke4b3zR0wAbDTA=="],
+
+    "@parcel/watcher-linux-x64-glibc": ["@parcel/watcher-linux-x64-glibc@2.5.6", "", { "os": "linux", "cpu": "x64" }, "sha512-kbT5wvNQlx7NaGjzPFu8nVIW1rWqV780O7ZtkjuWaPUgpv2NMFpjYERVi0UYj1msZNyCzGlaCWEtzc+exjMGbQ=="],
+
+    "@parcel/watcher-linux-x64-musl": ["@parcel/watcher-linux-x64-musl@2.5.6", "", { "os": "linux", "cpu": "x64" }, "sha512-1JRFeC+h7RdXwldHzTsmdtYR/Ku8SylLgTU/reMuqdVD7CtLwf0VR1FqeprZ0eHQkO0vqsbvFLXUmYm/uNKJBg=="],
+
+    "@parcel/watcher-win32-arm64": ["@parcel/watcher-win32-arm64@2.5.6", "", { "os": "win32", "cpu": "arm64" }, "sha512-3ukyebjc6eGlw9yRt678DxVF7rjXatWiHvTXqphZLvo7aC5NdEgFufVwjFfY51ijYEWpXbqF5jtrK275z52D4Q=="],
+
+    "@parcel/watcher-win32-ia32": ["@parcel/watcher-win32-ia32@2.5.6", "", { "os": "win32", "cpu": "ia32" }, "sha512-k35yLp1ZMwwee3Ez/pxBi5cf4AoBKYXj00CZ80jUz5h8prpiaQsiRPKQMxoLstNuqe2vR4RNPEAEcjEFzhEz/g=="],
+
+    "@parcel/watcher-win32-x64": ["@parcel/watcher-win32-x64@2.5.6", "", { "os": "win32", "cpu": "x64" }, "sha512-hbQlYcCq5dlAX9Qx+kFb0FHue6vbjlf0FrNzSKdYK2APUf7tGfGxQCk2ihEREmbR6ZMc0MVAD5RIX/41gpUzTw=="],
+
     "@polka/url": ["@polka/url@1.0.0-next.29", "", {}, "sha512-wwQAWhWSuHaag8c4q/KN/vCoeOJYshAIvMQwD4GpSb3OiZklFfvAgmj0VCBBImRpuF/aFgIRzllXlVX93Jevww=="],
 
     "@rolldown/binding-android-arm64": ["@rolldown/binding-android-arm64@1.0.2", "", { "os": "android", "cpu": "arm64" }, "sha512-ZS4D1JPGn/MYQN/SYDWftIE/nVsM8j/AFOYEzAoOE2O3NktQOZru+/vYXGbR/qtdLdIfGCP0lcoJiYVzsEz+iQ=="],
@@ -109,6 +154,8 @@
 
     "@sveltejs/vite-plugin-svelte": ["@sveltejs/vite-plugin-svelte@7.1.2", "", { "dependencies": { "deepmerge": "^4.3.1", "magic-string": "^0.30.21", "obug": "^2.1.0", "vitefu": "^1.1.2" }, "peerDependencies": { "svelte": "^5.46.4", "vite": "^8.0.0-beta.7 || ^8.0.0" } }, "sha512-DrUBA2UXRfDmUX/ZTiEopd3X40yavsJF1FX2RygcuIScHL7o5YX1fMvoYnDhjeJQC4weCOklirpNWlcb2NiSeA=="],
 
+    "@swc/helpers": ["@swc/helpers@0.5.23", "", { "dependencies": { "tslib": "^2.8.0" } }, "sha512-5lSsMOTXURePglDfvuAQUqkGek9Hg2kksOYay2m0+XR++b2NWYL/4sWyuvVBIs8oKnJaxkdi9whaL/sqN13afw=="],
+
     "@tailwindcss/node": ["@tailwindcss/node@4.3.0", "", { "dependencies": { "@jridgewell/remapping": "^2.3.5", "enhanced-resolve": "^5.21.0", "jiti": "^2.6.1", "lightningcss": "1.32.0", "magic-string": "^0.30.21", "source-map-js": "^1.2.1", "tailwindcss": "4.3.0" } }, "sha512-aFb4gUhFOgdh9AXo4IzBEOzBkkAxm9VigwDJnMIYv3lcfXCJVesNfbEaBl4BNgVRyid92AmdviqwBUBRKSeY3g=="],
 
     "@tailwindcss/oxide": ["@tailwindcss/oxide@4.3.0", "", { "optionalDependencies": { "@tailwindcss/oxide-android-arm64": "4.3.0", "@tailwindcss/oxide-darwin-arm64": "4.3.0", "@tailwindcss/oxide-darwin-x64": "4.3.0", "@tailwindcss/oxide-freebsd-x64": "4.3.0", "@tailwindcss/oxide-linux-arm-gnueabihf": "4.3.0", "@tailwindcss/oxide-linux-arm64-gnu": "4.3.0", "@tailwindcss/oxide-linux-arm64-musl": "4.3.0", "@tailwindcss/oxide-linux-x64-gnu": "4.3.0", "@tailwindcss/oxide-linux-x64-musl": "4.3.0", "@tailwindcss/oxide-wasm32-wasi": "4.3.0", "@tailwindcss/oxide-win32-arm64-msvc": "4.3.0", "@tailwindcss/oxide-win32-x64-msvc": "4.3.0" } }, "sha512-F7HZGBeN9I0/AuuJS5PwcD8xayx5ri5GhjYUDBEVYUkexyA/giwbDNjRVrxSezE3T250OU2K/wp/ltWx3UOefg=="],
@@ -147,6 +194,10 @@
 
     "@types/estree": ["@types/estree@1.0.9", "", {}, "sha512-GhdPgy1el4/ImP05X05Uw4cw2/M93BCUmnEvWZNStlCzEKME4Fkk+YpoA5OiHNQmoS7Cafb8Xa3Pya8m1Qrzeg=="],
 
+    "@types/node": ["@types/node@25.9.1", "", { "dependencies": { "undici-types": ">=7.24.0 <7.24.7" } }, "sha512-xfrlY7UD5rMJk3ZVJP8BNzS28J36YJg+xp+LPXV1TdWxr8uMH5A860QNxYDGQe/ylDSgjxE52Q9VnO7p75tJxg=="],
+
+    "@types/pako": ["@types/pako@2.0.4", "", {}, "sha512-VWDCbrLeVXJM9fihYodcLiIv0ku+AlOa/TQ1SvYOaBuyrSKgEcro95LJyIsJ4vSo6BXIxOKxiJAat04CmST9Fw=="],
+
     "@types/trusted-types": ["@types/trusted-types@2.0.7", "", {}, "sha512-ScaPdn1dQczgbl0QFTeTOmVHFULt394XJgOQNoyVhZ6r2vLnMLJfBPd53SB52T/3G36VI1/g2MZaX0cwDuXsfw=="],
 
     "acorn": ["acorn@8.16.0", "", { "bin": { "acorn": "bin/acorn" } }, "sha512-UVJyE9MttOsBQIDKw1skb9nAwQuR5wuGD3+82K6JgJlm/Y+KI92oNsMNGZCYdDsVtRHSak0pcV5Dno5+4jh9sw=="],
@@ -157,9 +208,11 @@
 
     "balanced-match": ["balanced-match@4.0.4", "", {}, "sha512-BLrgEcRTwX2o6gGxGOCNyMvGSp35YofuYzw9h1IMTRmKqttAZZVU67bdb9Pr2vUHA8+j3i2tJfjO6C6+4myGTA=="],
 
+    "bits-ui": ["bits-ui@2.18.1", "", { "dependencies": { "@floating-ui/core": "^1.7.1", "@floating-ui/dom": "^1.7.1", "esm-env": "^1.1.2", "runed": "^0.35.1", "svelte-toolbelt": "^0.10.6", "tabbable": "^6.2.0" }, "peerDependencies": { "@internationalized/date": "^3.8.1", "svelte": "^5.33.0" } }, "sha512-KkemzKFH4T3gt3H+P86JcnAWExjByv/6vlwjm/BoCwTPHu03yiCdxbghdJLvFReQTe0acCAiRcKfmixxD6XvlA=="],
+
     "brace-expansion": ["brace-expansion@5.0.6", "", { "dependencies": { "balanced-match": "^4.0.2" } }, "sha512-kLpxurY4Z4r9sgMsyG0Z9uzsBlgiU/EFKhj/h91/8yHu0edo7XuixOIH3VcJ8kkxs6/jPzoI6U9Vj3WqbMQ94g=="],
 
-    "chokidar": ["chokidar@4.0.3", "", { "dependencies": { "readdirp": "^4.0.1" } }, "sha512-Qgzu8kfBvo+cA4962jnP1KkS6Dop5NS6g7R5LFYJr4b8Ub94PPQXUksCw9PvXoeXPRRddRNC5C1JQUR2SMGtnA=="],
+    "chokidar": ["chokidar@5.0.0", "", { "dependencies": { "readdirp": "^5.0.0" } }, "sha512-TQMmc3w+5AxjpL8iIiwebF73dRDF4fBIieAqGn9RGCWaEVwQ6Fb2cGe31Yns0RRIzii5goJ1Y7xbMwo1TxMplw=="],
 
     "citty": ["citty@0.2.2", "", {}, "sha512-+6vJA3L98yv+IdfKGZHBNiGW5KHn22e/JwID0Strsz8h4S/csAu/OuICwxrg44k5MRiZHWIo8XXuJgQTriRP4w=="],
 
@@ -175,6 +228,8 @@
 
     "deepmerge": ["deepmerge@4.3.1", "", {}, "sha512-3sUqbMEc77XqpdNO7FRyRog+eW3ph+GYCbj+rK+uYyRMuwsVy0rMiVtPn+QJlKFvWP/1PYpapqYn0Me2knFn+A=="],
 
+    "dequal": ["dequal@2.0.3", "", {}, "sha512-0je+qPKHEMohvfRTCEo3CrPG6cAzAYgmzKyxRiYSSDkS6eGJdyVJm7WaYA5ECaAD9wLB2T4EEeymA5aFVcYXCA=="],
+
     "detect-libc": ["detect-libc@2.1.2", "", {}, "sha512-Btj2BOOO83o3WyH59e8MgXsxEQVcarkUOpEYrubB0urwnN10yQ364rsiByU11nZlqWYZm05i/of7io4mzihBtQ=="],
 
     "devalue": ["devalue@5.8.1", "", {}, "sha512-4CXDYRBGqN+57wVJkuXBYmpAVUSg3L6JAQa/DFqm238G73E1wuyc/JhGQJzN7vUf/CMphYau2zXbfWzDR5aTEw=="],
@@ -199,6 +254,14 @@
 
     "graceful-fs": ["graceful-fs@4.2.11", "", {}, "sha512-RbJ5/jmFcNNCcDV5o9eTnBLJ/HszWV0P73bc+Ff4nS/rJj+YaS6IGyiOL0VoBYX+l1Wrl3k63h/KrH+nhJ0XvQ=="],
 
+    "immutable": ["immutable@5.1.6", "", {}, "sha512-q1swsS8K7L8usSHuOqF2TAoCCkonYz0SG38wLAggaa4Wml70zixIvt2ql4coQ2C2B3hTjltJry4r6bULwgAXLQ=="],
+
+    "inline-style-parser": ["inline-style-parser@0.2.7", "", {}, "sha512-Nb2ctOyNR8DqQoR0OwRG95uNWIC0C1lCgf5Naz5H6Ji72KZ8OcFZLz2P5sNgwlyoJ8Yif11oMuYs5pBQa86csA=="],
+
+    "is-extglob": ["is-extglob@2.1.1", "", {}, "sha512-SbKbANkN603Vi4jEZv49LeVJMn4yGwsbzZworEoyEiutsN3nJYdbO36zfhGJ6QEDpOZIFkDtnq5JRxmvl3jsoQ=="],
+
+    "is-glob": ["is-glob@4.0.3", "", { "dependencies": { "is-extglob": "^2.1.1" } }, "sha512-xelSayHH36ZgE7ZWhli7pW34hNbNl8Ojv5KVmkJD4hBdD3th8Tfk9vYasLM+mXWOZhFkgZfxhLSnrwRr4elSSg=="],
+
     "is-reference": ["is-reference@3.0.3", "", { "dependencies": { "@types/estree": "^1.0.6" } }, "sha512-ixkJoqQvAP88E6wLydLGGqCJsrFUnqoH6HnaczB8XmDH1oaWU+xxdptvikTgaEhtZ53Ky6YXiBuUI2WXLMCwjw=="],
 
     "isexe": ["isexe@2.0.0", "", {}, "sha512-RHxMLp9lnKHGHRng9QFhRCMbYAcVpn69smSGcq3f36xjgVVWThj4qqLbTLlq7Ssj8B+fIQ1EuCEGI2lKsyQeIw=="],
@@ -235,8 +298,12 @@
 
     "locate-character": ["locate-character@3.0.0", "", {}, "sha512-SW13ws7BjaeJ6p7Q6CO2nchbYEc3X3J6WrmTTDto7yMPqVSZTUyY5Tjbid+Ab8gLnATtygYtiDIJGQRRn2ZOiA=="],
 
+    "lottie-web": ["lottie-web@5.13.0", "", {}, "sha512-+gfBXl6sxXMPe8tKQm7qzLnUy5DUPJPKIyRHwtpCpyUEYjHYRJC/5gjUvdkuO2c3JllrPtHXH5UJJK8LRYl5yQ=="],
+
     "lru-cache": ["lru-cache@11.5.1", "", {}, "sha512-RPimw/7aMdv2oqRrxKwvZXcPfwBrn/JZ2xYcY9Hus/6LaS3VOAKVWKWgNLCFSiOm1ESXinjsDlidVU7JlnCN2A=="],
 
+    "lz-string": ["lz-string@1.5.0", "", { "bin": { "lz-string": "bin/bin.js" } }, "sha512-h5bgJWpxJNswbU7qCrV0tIKQCaS3blPDrqKWx+QxzuzL1zGUzij9XCWLrSLsJPu5t+eWA/ycetzYAO5IOMcWAQ=="],
+
     "magic-string": ["magic-string@0.30.21", "", { "dependencies": { "@jridgewell/sourcemap-codec": "^1.5.5" } }, "sha512-vd2F4YUyEXKGcLHoq+TEyCjxueSeHnFxyyjNp80yg0XV4vUhnDer/lvvlqM/arB5bXQN5K2/3oinyCRyx8T2CQ=="],
 
     "minimatch": ["minimatch@10.2.5", "", { "dependencies": { "brace-expansion": "^5.0.5" } }, "sha512-MULkVLfKGYDFYejP07QOurDLLQpcjk7Fw+7jXS2R2czRQzR56yHRveU5NDJEOviH+hETZKSkIk5c+T23GjFUMg=="],
@@ -249,10 +316,14 @@
 
     "nanoid": ["nanoid@3.3.12", "", { "bin": { "nanoid": "bin/nanoid.cjs" } }, "sha512-ZB9RH/39qpq5Vu6Y+NmUaFhQR6pp+M2Xt76XBnEwDaGcVAqhlvxrl3B2bKS5D3NH3QR76v3aSrKaF/Kiy7lEtQ=="],
 
+    "node-addon-api": ["node-addon-api@7.1.1", "", {}, "sha512-5m3bsyrjFWE1xf7nz7YXdN4udnVtXK6/Yfgn5qnahL6bCkf2yKt4k3nuTKAtT4r3IG8JNR2ncsIMdZuAzJjHQQ=="],
+
     "nypm": ["nypm@0.6.6", "", { "dependencies": { "citty": "^0.2.2", "pathe": "^2.0.3", "tinyexec": "^1.1.1" }, "bin": { "nypm": "dist/cli.mjs" } }, "sha512-vRyr0r4cbBapw07Xw8xrj9Teq3o7MUD35rSaTcanDbW+aK2XHDgJFiU6ZTj2GBw7Q12ysdsyFss+Vdz4hQ0Y6Q=="],
 
     "obug": ["obug@2.1.1", "", {}, "sha512-uTqF9MuPraAQ+IsnPf366RG4cP9RtUi7MLO1N3KEc+wb0a6yKpeL0lmk2IB1jY5KHPAlTc6T/JRdC/YqxHNwkQ=="],
 
+    "pako": ["pako@2.1.0", "", {}, "sha512-w+eufiZ1WuJYgPXbV/PO3NCMEc3xqylkKHzp8bxp1uW4qaSNQUkwmLLEc3kKsfz8lpV1F8Ht3U1Cm+9Srog2ug=="],
+
     "path-key": ["path-key@3.1.1", "", {}, "sha512-ojmeN0qd+y0jszEtoY48r0Peq5dwMEkIlCOu6Q5f41lfkswXuKtYrhgoTpLnyIcHm24Uhqx+5Tqm2InSwLhE6Q=="],
 
     "path-scurry": ["path-scurry@2.0.2", "", { "dependencies": { "lru-cache": "^11.0.0", "minipass": "^7.1.2" } }, "sha512-3O/iVVsJAPsOnpwWIeD+d6z/7PmqApyQePUtCndjatj/9I5LylHvt5qluFaBT3I5h3r1ejfR056c+FCv+NnNXg=="],
@@ -267,12 +338,16 @@
 
     "postcss-selector-parser": ["postcss-selector-parser@6.0.10", "", { "dependencies": { "cssesc": "^3.0.0", "util-deprecate": "^1.0.2" } }, "sha512-IQ7TZdoaqbT+LCpShg46jnZVlhWD2w6iQYAcYXfHARZ7X1t/UGhhceQDs5X0cGqKvYlHNOuv7Oa1xmb0oQuA3w=="],
 
-    "readdirp": ["readdirp@4.1.2", "", {}, "sha512-GDhwkLfywWL2s6vEjyhri+eXmfH6j1L7JE27WhqLeYzoh/A3DBaYGEj2H/HFZCn/kMfim73FXxEJTw06WtxQwg=="],
+    "readdirp": ["readdirp@5.0.0", "", {}, "sha512-9u/XQ1pvrQtYyMpZe7DXKv2p5CNvyVwzUB6uhLAnQwHMSgKMBR62lc7AHljaeteeHXn11XTAaLLUVZYVZyuRBQ=="],
 
     "rolldown": ["rolldown@1.0.2", "", { "dependencies": { "@oxc-project/types": "=0.132.0", "@rolldown/pluginutils": "^1.0.0" }, "optionalDependencies": { "@rolldown/binding-android-arm64": "1.0.2", "@rolldown/binding-darwin-arm64": "1.0.2", "@rolldown/binding-darwin-x64": "1.0.2", "@rolldown/binding-freebsd-x64": "1.0.2", "@rolldown/binding-linux-arm-gnueabihf": "1.0.2", "@rolldown/binding-linux-arm64-gnu": "1.0.2", "@rolldown/binding-linux-arm64-musl": "1.0.2", "@rolldown/binding-linux-ppc64-gnu": "1.0.2", "@rolldown/binding-linux-s390x-gnu": "1.0.2", "@rolldown/binding-linux-x64-gnu": "1.0.2", "@rolldown/binding-linux-x64-musl": "1.0.2", "@rolldown/binding-openharmony-arm64": "1.0.2", "@rolldown/binding-wasm32-wasi": "1.0.2", "@rolldown/binding-win32-arm64-msvc": "1.0.2", "@rolldown/binding-win32-x64-msvc": "1.0.2" }, "bin": { "rolldown": "./bin/cli.mjs" } }, "sha512-oZx5zVDtVB44AW3eaifgDml1gWRDZGvjcfdxonE4swNPG98PrrXjaO/KrnUjzlMnztCCRVlUueA1kCXhARGk6g=="],
 
+    "runed": ["runed@0.35.1", "", { "dependencies": { "dequal": "^2.0.3", "esm-env": "^1.0.0", "lz-string": "^1.5.0" }, "peerDependencies": { "@sveltejs/kit": "^2.21.0", "svelte": "^5.7.0" }, "optionalPeers": ["@sveltejs/kit"] }, "sha512-2F4Q/FZzbeJTFdIS/PuOoPRSm92sA2LhzTnv6FXhCoENb3huf5+fDuNOg1LNvGOouy3u/225qxmuJvcV3IZK5Q=="],
+
     "sade": ["sade@1.8.1", "", { "dependencies": { "mri": "^1.1.0" } }, "sha512-xal3CZX1Xlo/k4ApwCFrHVACi9fBqJ7V+mwhBsuf/1IOKbBy098Fex+Wa/5QMubw09pSZ/u8EY8PWgevJsXp1A=="],
 
+    "sass": ["sass@1.100.0", "", { "dependencies": { "chokidar": "^5.0.0", "immutable": "^5.1.5", "source-map-js": ">=0.6.2 <2.0.0" }, "optionalDependencies": { "@parcel/watcher": "^2.4.1" }, "bin": { "sass": "sass.js" } }, "sha512-B5j0rYMlinhhOo9tjQebMVVn0TfyXAF+wB3b2ggZUuJ/is/Y+7+JGjirAMxHZ9Z3hIP98NPfamlAkBHa1lAaXQ=="],
+
     "set-cookie-parser": ["set-cookie-parser@3.1.0", "", {}, "sha512-kjnC1DXBHcxaOaOXBHBeRtltsDG2nUiUni+jP92M9gYdW12rsmx92UsfpH7o5tDRs7I1ZZPSQJQGv3UaRfCiuw=="],
 
     "shebang-command": ["shebang-command@2.0.0", "", { "dependencies": { "shebang-regex": "^3.0.0" } }, "sha512-kHxr2zZpYtdmrN1qDjrrX/Z1rR1kG8Dx+gkpK1G4eXmvXswmcE1hTWBWYUzlraYw1/yZp6YuDY77YtvbN0dmDA=="],
@@ -285,10 +360,16 @@
 
     "source-map-js": ["source-map-js@1.2.1", "", {}, "sha512-UXWMKhLOwVKb728IUtQPXxfYU+usdybtUrK/8uGE8CQMvrhOpwvzDBwj0QhSL7MQc7vIsISBG8VQ8+IDQxpfQA=="],
 
+    "style-to-object": ["style-to-object@1.0.14", "", { "dependencies": { "inline-style-parser": "0.2.7" } }, "sha512-LIN7rULI0jBscWQYaSswptyderlarFkjQ+t79nzty8tcIAceVomEVlLzH5VP4Cmsv6MtKhs7qaAiwlcp+Mgaxw=="],
+
     "svelte": ["svelte@5.55.10", "", { "dependencies": { "@jridgewell/remapping": "^2.3.4", "@jridgewell/sourcemap-codec": "^1.5.0", "@sveltejs/acorn-typescript": "^1.0.10", "@types/estree": "^1.0.5", "@types/trusted-types": "^2.0.7", "acorn": "^8.12.1", "aria-query": "5.3.1", "axobject-query": "^4.1.0", "clsx": "^2.1.1", "devalue": "^5.8.1", "esm-env": "^1.2.1", "esrap": "^2.2.9", "is-reference": "^3.0.3", "locate-character": "^3.0.0", "magic-string": "^0.30.11", "zimmerframe": "^1.1.2" } }, "sha512-v9mFVBY1USosyIWdXE7Cg4AN0ywyKCMcAhONvli8doMowEhFhMdNLKD1j7O/UnsrdVTHaUOk/jv8hD/HClVy+g=="],
 
     "svelte-check": ["svelte-check@4.4.8", "", { "dependencies": { "@jridgewell/trace-mapping": "^0.3.25", "chokidar": "^4.0.1", "fdir": "^6.2.0", "picocolors": "^1.0.0", "sade": "^1.7.4" }, "peerDependencies": { "svelte": "^4.0.0 || ^5.0.0-next.0", "typescript": ">=5.0.0" }, "bin": { "svelte-check": "bin/svelte-check" } }, "sha512-67adfgBox5eNSNIvIIwgFizKGdcRrGpiMoNO2obHcYuLz7iTa8Xgm/NGU3ntMFnNm8K1grFOIG6HhMLX/vcN8w=="],
 
+    "svelte-toolbelt": ["svelte-toolbelt@0.10.6", "", { "dependencies": { "clsx": "^2.1.1", "runed": "^0.35.1", "style-to-object": "^1.0.8" }, "peerDependencies": { "svelte": "^5.30.2" } }, "sha512-YWuX+RE+CnWYx09yseAe4ZVMM7e7GRFZM6OYWpBKOb++s+SQ8RBIMMe+Bs/CznBMc0QPLjr+vDBxTAkozXsFXQ=="],
+
+    "tabbable": ["tabbable@6.4.0", "", {}, "sha512-05PUHKSNE8ou2dwIxTngl4EzcnsCDZGJ/iCLtDflR/SHB/ny14rXc+qU5P4mG9JkusiV7EivzY9Mhm55AzAvCg=="],
+
     "tailwindcss": ["tailwindcss@4.3.0", "", {}, "sha512-y6nxMGB1nMW9R6k96e5gdIFzcfL/gTJRNaqGes1YvkLnPVXzWgbqFF2yLC0T8G774n24cx3Pe8XrKoniCOAH+Q=="],
 
     "tapable": ["tapable@2.3.3", "", {}, "sha512-uxc/zpqFg6x7C8vOE7lh6Lbda8eEL9zmVm/PLeTPBRhh1xCgdWaQ+J1CUieGpIfm2HdtsUpRv+HshiasBMcc6A=="],
@@ -305,6 +386,8 @@
 
     "ultracite": ["ultracite@7.8.0", "", { "dependencies": { "@clack/prompts": "^1.4.0", "commander": "^14.0.3", "cross-spawn": "^7.0.6", "deepmerge": "^4.3.1", "glob": "^13.0.6", "jsonc-parser": "^3.3.1", "nypm": "^0.6.6", "yaml": "^2.9.0", "zod": "^4.4.3" }, "peerDependencies": { "oxfmt": ">=0.1.0", "oxlint": "^1.0.0" }, "optionalPeers": ["oxfmt", "oxlint"], "bin": { "ultracite": "dist/index.js" } }, "sha512-wAIdn7YTBjygSdpz3ubMCAqja0odk2SCn/YqrM6k17D7ASouo0qaODJa76Xo3tp13yPWnNnLvcduNlmLBAtzYg=="],
 
+    "undici-types": ["undici-types@7.24.6", "", {}, "sha512-WRNW+sJgj5OBN4/0JpHFqtqzhpbnV0GuB+OozA9gCL7a993SmU+1JBZCzLNxYsbMfIeDL+lTsphD5jN5N+n0zg=="],
+
     "util-deprecate": ["util-deprecate@1.0.2", "", {}, "sha512-EPD5q1uXyFxJpCrLnCc1nHnq3gOa6DZBocAIiI2TaSCA7VCJ1UJDMagCzIkXNsUYfD1daK//LTEQ8xiIbrHtcw=="],
 
     "vite": ["vite@8.0.14", "", { "dependencies": { "lightningcss": "^1.32.0", "picomatch": "^4.0.4", "postcss": "^8.5.15", "rolldown": "1.0.2", "tinyglobby": "^0.2.16" }, "optionalDependencies": { "fsevents": "~2.3.3" }, "peerDependencies": { "@types/node": "^20.19.0 || >=22.12.0", "@vitejs/devtools": "^0.1.18", "esbuild": "^0.27.0 || ^0.28.0", "jiti": ">=1.21.0", "less": "^4.0.0", "sass": "^1.70.0", "sass-embedded": "^1.70.0", "stylus": ">=0.54.8", "sugarss": "^5.0.0", "terser": "^5.16.0", "tsx": "^4.8.1", "yaml": "^2.4.2" }, "optionalPeers": ["@types/node", "@vitejs/devtools", "esbuild", "jiti", "less", "sass", "sass-embedded", "stylus", "sugarss", "terser", "tsx", "yaml"], "bin": { "vite": "bin/vite.js" } }, "sha512-s4BJJ+5y1pYL6Otw51FHhVJQhPnuRinKig64g/1+EUNaJsd3gCKdD31IPFvswUgW9/60QT9oFHbZHbQK5imcxw=="],
@@ -330,5 +413,9 @@
     "@tailwindcss/oxide-wasm32-wasi/@tybys/wasm-util": ["@tybys/wasm-util@0.10.2", "", { "dependencies": { "tslib": "^2.4.0" }, "bundled": true }, "sha512-RoBvJ2X0wuKlWFIjrwffGw1IqZHKQqzIchKaadZZfnNpsAYp2mM0h36JtPCjNDAHGgYez/15uMBpfGwchhiMgg=="],
 
     "@tailwindcss/oxide-wasm32-wasi/tslib": ["tslib@2.8.1", "", { "bundled": true }, "sha512-oJFu94HQb+KVduSUQL7wnpmqnfmLsOA/nAh6b6EH0wCEoK0/mPeXU6c3wKDV83MkOuHPRHtSXKKU99IBazS/2w=="],
+
+    "svelte-check/chokidar": ["chokidar@4.0.3", "", { "dependencies": { "readdirp": "^4.0.1" } }, "sha512-Qgzu8kfBvo+cA4962jnP1KkS6Dop5NS6g7R5LFYJr4b8Ub94PPQXUksCw9PvXoeXPRRddRNC5C1JQUR2SMGtnA=="],
+
+    "svelte-check/chokidar/readdirp": ["readdirp@4.1.2", "", {}, "sha512-GDhwkLfywWL2s6vEjyhri+eXmfH6j1L7JE27WhqLeYzoh/A3DBaYGEj2H/HFZCn/kMfim73FXxEJTw06WtxQwg=="],
   }
 }

frontend/package.json

@@ -7,6 +7,9 @@
     "@sveltejs/vite-plugin-svelte": "^7.0.0",
     "@tailwindcss/typography": "^0.5.19",
     "@tailwindcss/vite": "^4.2.2",
+    "@types/node": "^25.9.1",
+    "@types/pako": "^2.0.4",
+    "sass": "^1.100.0",
     "svelte": "^5.55.2",
     "svelte-check": "^4.4.6",
     "tailwindcss": "^4.2.2",
@@ -27,5 +30,10 @@
   },
   "type": "module",
   "version": "0.0.1",
-  "private": true
+  "private": true,
+  "dependencies": {
+    "bits-ui": "^2.18.1",
+    "lottie-web": "^5.13.0",
+    "pako": "^2.1.0"
+  }
 }

frontend/src/app.html

@@ -4,6 +4,16 @@
 		<meta charset="utf-8" />
 		<meta name="viewport" content="width=device-width, initial-scale=1" />
 		<meta name="text-scale" content="scale" />
+		<script>
+			(() => {
+				const stored = localStorage.getItem("bg.theme");
+				const dark =
+					stored === "dark" ||
+					((stored === "system" || stored === null) &&
+						window.matchMedia("(prefers-color-scheme: dark)").matches);
+				if (dark) document.documentElement.classList.add("theme-dark");
+			})();
+		</script>
 		%sveltekit.head%
 	</head>
 	<body data-sveltekit-preload-data="hover">

frontend/src/lib/actions/ripple.ts

@@ -0,0 +1,32 @@
+const WAVE_DURATION = 700;
+
+export function ripple(node: HTMLElement) {
+  function onPointerDown(event: PointerEvent) {
+    if (event.button !== 0) {
+      return;
+    }
+    const rect = node.getBoundingClientRect();
+    const size = Math.max(rect.width, rect.height);
+    let container = node.querySelector<HTMLElement>(".ripple-container");
+    if (!container) {
+      container = document.createElement("div");
+      container.className = "ripple-container";
+      node.append(container);
+    }
+    const wave = document.createElement("div");
+    wave.className = "ripple-wave";
+    wave.style.width = `${size}px`;
+    wave.style.height = `${size}px`;
+    wave.style.left = `${event.clientX - rect.left - size / 2}px`;
+    wave.style.top = `${event.clientY - rect.top - size / 2}px`;
+    container.append(wave);
+    setTimeout(() => wave.remove(), WAVE_DURATION);
+  }
+
+  node.addEventListener("pointerdown", onPointerDown);
+  return {
+    destroy() {
+      node.removeEventListener("pointerdown", onPointerDown);
+    },
+  };
+}

frontend/src/lib/actions/visible.ts

@@ -0,0 +1,20 @@
+export function visible(node: HTMLElement, onVisible: () => void) {
+  const observer = new IntersectionObserver(
+    (entries) => {
+      for (const entry of entries) {
+        if (entry.isIntersecting) {
+          onVisible();
+          observer.disconnect();
+          return;
+        }
+      }
+    },
+    { rootMargin: "300px" }
+  );
+  observer.observe(node);
+  return {
+    destroy() {
+      observer.disconnect();
+    },
+  };
+}

frontend/src/lib/api/avatars.ts

@@ -0,0 +1,127 @@
+import { accounts } from "$lib/stores/accounts.svelte";
+import { auth } from "$lib/stores/auth.svelte";
+
+const BASE = import.meta.env.VITE_API_BASE ?? "/api";
+const RETRY_DELAY = 2500;
+
+export type AvatarKind = "peer" | "chat";
+
+const ready = new Map<string, string>();
+const missing = new Set<string>();
+const inflight = new Map<string, Promise<string | null>>();
+
+function cacheKey(account: number, kind: AvatarKind, id: number): string {
+  return `${account}:${kind}:${id}`;
+}
+
+function authHeaders(): Record<string, string> {
+  return auth.token ? { Authorization: `Bearer ${auth.token}` } : {};
+}
+
+function delay(ms: number): Promise<void> {
+  return new Promise((resolve) => {
+    setTimeout(resolve, ms);
+  });
+}
+
+async function fetchAvatar(
+  account: number,
+  kind: AvatarKind,
+  id: number,
+  key: string,
+  retry: boolean
+): Promise<string | null> {
+  const url = `${BASE}/avatars/${kind}/${id}?account_id=${account}`;
+  const response = await fetch(url, { headers: authHeaders() });
+  if (response.ok) {
+    const objectUrl = URL.createObjectURL(await response.blob());
+    ready.set(key, objectUrl);
+    return objectUrl;
+  }
+  if (response.status === 409 && retry) {
+    await delay(RETRY_DELAY);
+    return fetchAvatar(account, kind, id, key, false);
+  }
+  missing.add(key);
+  return null;
+}
+
+export function loadAvatar(
+  kind: AvatarKind,
+  id: number
+): Promise<string | null> {
+  const account = accounts.selectedId;
+  if (account === null) {
+    return Promise.resolve(null);
+  }
+  const key = cacheKey(account, kind, id);
+  const cached = ready.get(key);
+  if (cached) {
+    return Promise.resolve(cached);
+  }
+  if (missing.has(key)) {
+    return Promise.resolve(null);
+  }
+  const existing = inflight.get(key);
+  if (existing) {
+    return existing;
+  }
+  const promise = fetchAvatar(account, kind, id, key, true).finally(() => {
+    inflight.delete(key);
+  });
+  inflight.set(key, promise);
+  return promise;
+}
+
+async function fetchVariant(
+  account: number,
+  kind: AvatarKind,
+  id: number,
+  uniqueId: string,
+  key: string,
+  retry: boolean
+): Promise<string | null> {
+  const url = `${BASE}/avatars/${kind}/${id}?account_id=${account}&unique_id=${encodeURIComponent(uniqueId)}`;
+  const response = await fetch(url, { headers: authHeaders() });
+  if (response.ok) {
+    const objectUrl = URL.createObjectURL(await response.blob());
+    ready.set(key, objectUrl);
+    return objectUrl;
+  }
+  if (response.status === 409 && retry) {
+    await delay(RETRY_DELAY);
+    return fetchVariant(account, kind, id, uniqueId, key, false);
+  }
+  missing.add(key);
+  return null;
+}
+
+export function loadAvatarVariant(
+  kind: AvatarKind,
+  id: number,
+  uniqueId: string
+): Promise<string | null> {
+  const account = accounts.selectedId;
+  if (account === null) {
+    return Promise.resolve(null);
+  }
+  const key = `${cacheKey(account, kind, id)}:${uniqueId}`;
+  const cached = ready.get(key);
+  if (cached) {
+    return Promise.resolve(cached);
+  }
+  if (missing.has(key)) {
+    return Promise.resolve(null);
+  }
+  const existing = inflight.get(key);
+  if (existing) {
+    return existing;
+  }
+  const promise = fetchVariant(account, kind, id, uniqueId, key, true).finally(
+    () => {
+      inflight.delete(key);
+    }
+  );
+  inflight.set(key, promise);
+  return promise;
+}

frontend/src/lib/api/client.ts

@@ -0,0 +1,141 @@
+import { goto } from "$app/navigation";
+import { accounts } from "$lib/stores/accounts.svelte";
+import { auth } from "$lib/stores/auth.svelte";
+
+const BASE = import.meta.env.VITE_API_BASE ?? "/api";
+const MAX_LIMIT = 500;
+
+export class ApiError extends Error {
+  status: number;
+  detail: string;
+
+  constructor(status: number, detail: string) {
+    super(detail);
+    this.name = "ApiError";
+    this.status = status;
+    this.detail = detail;
+  }
+}
+
+type QueryValue = string | number | boolean | null | undefined;
+
+interface RequestOptions {
+  account?: boolean;
+  body?: unknown;
+  method?: string;
+  query?: Record<string, QueryValue>;
+}
+
+function buildQuery(
+  query: Record<string, QueryValue> | undefined,
+  withAccount: boolean
+): string {
+  const params = new URLSearchParams();
+  if (withAccount && accounts.selectedId !== null) {
+    params.set("account_id", String(accounts.selectedId));
+  }
+  if (query) {
+    for (const [key, value] of Object.entries(query)) {
+      if (value === null || value === undefined) {
+        continue;
+      }
+      const clamped =
+        key === "limit" && typeof value === "number"
+          ? Math.min(value, MAX_LIMIT)
+          : value;
+      params.set(key, String(clamped));
+    }
+  }
+  const text = params.toString();
+  return text ? `?${text}` : "";
+}
+
+function authHeaders(): Record<string, string> {
+  return auth.token ? { Authorization: `Bearer ${auth.token}` } : {};
+}
+
+async function handleError(response: Response): Promise<never> {
+  if (response.status === 401) {
+    auth.logout();
+    await goto("/login");
+  }
+  let detail = response.statusText;
+  try {
+    const data = await response.json();
+    if (data && typeof data.detail === "string") {
+      detail = data.detail;
+    }
+  } catch {
+    detail = response.statusText;
+  }
+  throw new ApiError(response.status, detail);
+}
+
+export async function request<T>(
+  path: string,
+  options: RequestOptions = {}
+): Promise<T> {
+  const { method = "GET", query, body, account = false } = options;
+  const headers: Record<string, string> = authHeaders();
+  if (body !== undefined) {
+    headers["Content-Type"] = "application/json";
+  }
+  const response = await fetch(`${BASE}${path}${buildQuery(query, account)}`, {
+    method,
+    headers,
+    body: body === undefined ? undefined : JSON.stringify(body),
+  });
+  if (!response.ok) {
+    return handleError(response);
+  }
+  if (response.status === 204) {
+    return undefined as T;
+  }
+  return response.json() as Promise<T>;
+}
+
+export type MediaResult =
+  | { state: "ready"; url: string; mime: string | null }
+  | { state: "not-downloaded" }
+  | { state: "missing" };
+
+export async function requestMedia(mediaId: number): Promise<MediaResult> {
+  const response = await fetch(`${BASE}/media/${mediaId}`, {
+    headers: authHeaders(),
+  });
+  if (response.status === 409) {
+    return { state: "not-downloaded" };
+  }
+  if (response.status === 404) {
+    return { state: "missing" };
+  }
+  if (!response.ok) {
+    return handleError(response);
+  }
+  const blob = await response.blob();
+  return {
+    state: "ready",
+    url: URL.createObjectURL(blob),
+    mime: response.headers.get("Content-Type"),
+  };
+}
+
+export async function requestMediaVersion(
+  versionId: number
+): Promise<MediaResult> {
+  const response = await fetch(`${BASE}/media/version/${versionId}`, {
+    headers: authHeaders(),
+  });
+  if (response.status === 404) {
+    return { state: "missing" };
+  }
+  if (!response.ok) {
+    return handleError(response);
+  }
+  const blob = await response.blob();
+  return {
+    state: "ready",
+    url: URL.createObjectURL(blob),
+    mime: response.headers.get("Content-Type"),
+  };
+}

frontend/src/lib/api/custom-emoji.ts

@@ -0,0 +1,70 @@
+import { accounts } from "$lib/stores/accounts.svelte";
+import { auth } from "$lib/stores/auth.svelte";
+
+const BASE = import.meta.env.VITE_API_BASE ?? "/api";
+const RETRY_DELAY = 2500;
+
+export interface CustomEmojiAsset {
+  mime: string;
+  url: string;
+}
+
+const ready = new Map<string, CustomEmojiAsset>();
+const missing = new Set<string>();
+const inflight = new Map<string, Promise<CustomEmojiAsset | null>>();
+
+function authHeaders(): Record<string, string> {
+  return auth.token ? { Authorization: `Bearer ${auth.token}` } : {};
+}
+
+function delay(ms: number): Promise<void> {
+  return new Promise((resolve) => {
+    setTimeout(resolve, ms);
+  });
+}
+
+async function fetchEmoji(
+  account: number,
+  id: string,
+  key: string,
+  retry: boolean
+): Promise<CustomEmojiAsset | null> {
+  const url = `${BASE}/custom-emoji/${id}?account_id=${account}`;
+  const response = await fetch(url, { headers: authHeaders() });
+  if (response.ok) {
+    const blob = await response.blob();
+    const asset = { url: URL.createObjectURL(blob), mime: blob.type };
+    ready.set(key, asset);
+    return asset;
+  }
+  if (response.status === 409 && retry) {
+    await delay(RETRY_DELAY);
+    return fetchEmoji(account, id, key, false);
+  }
+  missing.add(key);
+  return null;
+}
+
+export function loadCustomEmoji(id: string): Promise<CustomEmojiAsset | null> {
+  const account = accounts.selectedId;
+  if (account === null) {
+    return Promise.resolve(null);
+  }
+  const key = `${account}:${id}`;
+  const cached = ready.get(key);
+  if (cached) {
+    return Promise.resolve(cached);
+  }
+  if (missing.has(key)) {
+    return Promise.resolve(null);
+  }
+  const existing = inflight.get(key);
+  if (existing) {
+    return existing;
+  }
+  const promise = fetchEmoji(account, id, key, true).finally(() => {
+    inflight.delete(key);
+  });
+  inflight.set(key, promise);
+  return promise;
+}

frontend/src/lib/api/endpoints.ts

@@ -0,0 +1,430 @@
+import { request } from "$lib/api/client";
+import type {
+  Account,
+  Alert,
+  Annotation,
+  AvatarHistoryView,
+  CallbackView,
+  CaptureToggles,
+  Chat,
+  ChatLinkView,
+  DayCount,
+  Folder,
+  JobStatus,
+  JobView,
+  LinkView,
+  MediaVersion,
+  MediaView,
+  MessageAt,
+  MessageVersion,
+  MessageView,
+  PeerHistoryView,
+  PeerView,
+  PinnedView,
+  PolicyChatKind,
+  PolicyCreate,
+  PolicyRecord,
+  PresenceHourly,
+  PresenceSample,
+  ReactionView,
+  ResponseStats,
+  SearchHit,
+  StoryView,
+  VolumeBucket,
+  Watch,
+} from "$lib/api/types";
+import { accounts } from "$lib/stores/accounts.svelte";
+
+interface Page {
+  limit?: number;
+  offset?: number;
+}
+
+export function listAccounts(): Promise<Account[]> {
+  return request<Account[]>("/accounts");
+}
+
+export function listChats(page: Page = {}): Promise<Chat[]> {
+  return request<Chat[]>("/chats", { account: true, query: { ...page } });
+}
+
+export function listFolders(): Promise<Folder[]> {
+  return request<Folder[]>("/folders", { account: true });
+}
+
+export function listPolicies(): Promise<PolicyRecord[]> {
+  return request<PolicyRecord[]>("/policy", { account: true });
+}
+
+export function createPolicy(body: PolicyCreate): Promise<PolicyRecord> {
+  return request<PolicyRecord>("/policy", {
+    method: "POST",
+    body: { ...body, account_id: accounts.selectedId },
+  });
+}
+
+export function updatePolicy(
+  id: number,
+  toggles: CaptureToggles
+): Promise<PolicyRecord> {
+  return request<PolicyRecord>(`/policy/${id}`, {
+    method: "PUT",
+    body: toggles,
+  });
+}
+
+export function deletePolicy(id: number): Promise<void> {
+  return request<void>(`/policy/${id}`, { method: "DELETE" });
+}
+
+export function effectivePolicy(query: {
+  chat_id: number;
+  is_bot?: boolean;
+  is_contact?: boolean | null;
+  kind: PolicyChatKind;
+}): Promise<CaptureToggles> {
+  return request<CaptureToggles>("/policy/effective", {
+    account: true,
+    query,
+  });
+}
+
+export function listMessages(
+  chatId: number,
+  options: Page & {
+    include_deleted?: boolean;
+    before_id?: number;
+    after_id?: number;
+  } = {}
+): Promise<MessageView[]> {
+  return request<MessageView[]>(`/chats/${chatId}/messages`, {
+    account: true,
+    query: { ...options },
+  });
+}
+
+export function getCurrentPresence(
+  peerId: number
+): Promise<PresenceSample | null> {
+  return request<PresenceSample | null>("/presence/current", {
+    account: true,
+    query: { peer_id: peerId },
+  });
+}
+
+export function getPresenceHistory(
+  peerId: number,
+  page: Page = {}
+): Promise<PresenceSample[]> {
+  return request<PresenceSample[]>("/presence", {
+    account: true,
+    query: { peer_id: peerId, ...page },
+  });
+}
+
+export function getPresenceHourly(peerId: number): Promise<PresenceHourly[]> {
+  return request<PresenceHourly[]>("/presence/hourly", {
+    account: true,
+    query: { peer_id: peerId },
+  });
+}
+
+export function getMessageVolume(
+  chatId: number,
+  days = 90
+): Promise<VolumeBucket[]> {
+  return request<VolumeBucket[]>("/analytics/volume", {
+    account: true,
+    query: { chat_id: chatId, days },
+  });
+}
+
+export function getResponseStats(chatId: number): Promise<ResponseStats> {
+  return request<ResponseStats>("/analytics/response-time", {
+    account: true,
+    query: { chat_id: chatId },
+  });
+}
+
+export function getPinned(chatId: number): Promise<PinnedView | null> {
+  return request<PinnedView | null>(`/chats/${chatId}/pinned`, {
+    account: true,
+  });
+}
+
+export function listMessageVersions(
+  chatId: number,
+  messageId: number
+): Promise<MessageVersion[]> {
+  return request<MessageVersion[]>(
+    `/chats/${chatId}/messages/${messageId}/versions`,
+    { account: true }
+  );
+}
+
+export function listDeleted(
+  options: Page & { chat_id?: number } = {}
+): Promise<MessageView[]> {
+  return request<MessageView[]>("/deleted", {
+    account: true,
+    query: { ...options },
+  });
+}
+
+export function getPeer(peerId: number): Promise<PeerView> {
+  return request<PeerView>(`/peers/${peerId}`, { account: true });
+}
+
+export function getPeerHistory(peerId: number): Promise<PeerHistoryView[]> {
+  return request<PeerHistoryView[]>(`/peers/${peerId}/history`, {
+    account: true,
+  });
+}
+
+export function getAvatarHistory(
+  kind: "peer" | "chat",
+  id: number
+): Promise<AvatarHistoryView[]> {
+  return request<AvatarHistoryView[]>(`/avatars/${kind}/${id}/history`, {
+    account: true,
+  });
+}
+
+export function getChatMedia(
+  chatId: number,
+  kinds: string[],
+  page: { limit?: number; offset?: number } = {}
+): Promise<MediaView[]> {
+  return request<MediaView[]>(`/chats/${chatId}/media`, {
+    account: true,
+    query: { kinds: kinds.join(","), ...page },
+  });
+}
+
+export function getChatLinks(
+  chatId: number,
+  page: { limit?: number; offset?: number } = {}
+): Promise<ChatLinkView[]> {
+  return request<ChatLinkView[]>(`/chats/${chatId}/links`, {
+    account: true,
+    query: { ...page },
+  });
+}
+
+export function getMessageReactions(
+  chatId: number,
+  messageId: number
+): Promise<ReactionView[]> {
+  return request<ReactionView[]>(`/messages/${chatId}/${messageId}/reactions`, {
+    account: true,
+  });
+}
+
+export function getMessageCallbacks(
+  chatId: number,
+  messageId: number
+): Promise<CallbackView[]> {
+  return request<CallbackView[]>(`/messages/${chatId}/${messageId}/callbacks`, {
+    account: true,
+  });
+}
+
+export function getMessageLinks(
+  chatId: number,
+  messageId: number
+): Promise<LinkView[]> {
+  return request<LinkView[]>(`/messages/${chatId}/${messageId}/links`, {
+    account: true,
+  });
+}
+
+export function getChatCalendar(chatId: number): Promise<DayCount[]> {
+  return request<DayCount[]>(`/chats/${chatId}/calendar`, { account: true });
+}
+
+export function getMessageAt(chatId: number, date: string): Promise<MessageAt> {
+  return request<MessageAt>(`/chats/${chatId}/message-at`, {
+    account: true,
+    query: { date },
+  });
+}
+
+export function getStories(
+  peerId: number,
+  page: Page = {}
+): Promise<StoryView[]> {
+  return request<StoryView[]>("/stories", {
+    account: true,
+    query: { peer_id: peerId, ...page },
+  });
+}
+
+export function getPeers(ids: number[]): Promise<PeerView[]> {
+  if (ids.length === 0) {
+    return Promise.resolve([]);
+  }
+  return request<PeerView[]>("/peers/batch", {
+    account: true,
+    query: { ids: ids.join(",") },
+  });
+}
+
+export function enrichChat(chatId: number): Promise<{ job_id: number }> {
+  return request<{ job_id: number }>(`/chats/${chatId}/enrich`, {
+    method: "POST",
+    body: { account_id: accounts.selectedId },
+  });
+}
+
+export function getJob(jobId: number): Promise<JobView> {
+  return request<JobView>(`/jobs/${jobId}`, { account: true });
+}
+
+export function listJobs(status?: JobStatus): Promise<JobView[]> {
+  return request<JobView[]>("/jobs", {
+    account: true,
+    query: status ? { status } : {},
+  });
+}
+
+export function enqueueBackfill(
+  chatId: number,
+  media: boolean
+): Promise<{ job_id: number }> {
+  return request<{ job_id: number }>("/backfill", {
+    method: "POST",
+    body: { account_id: accounts.selectedId, chat_id: chatId, media },
+  });
+}
+
+export function syncDialogs(): Promise<{ job_id: number }> {
+  return request<{ job_id: number }>("/dialogs/sync", {
+    method: "POST",
+    body: { account_id: accounts.selectedId },
+  });
+}
+
+export function getMediaVersions(
+  chatId: number,
+  messageId: number
+): Promise<MediaVersion[]> {
+  return request<MediaVersion[]>(`/media/versions/${chatId}/${messageId}`, {
+    account: true,
+  });
+}
+
+export function getMediaMeta(mediaId: number): Promise<MediaView> {
+  return request<MediaView>(`/media/${mediaId}/meta`);
+}
+
+export function getMessageMedia(
+  chatId: number,
+  messageId: number
+): Promise<MediaView> {
+  return request<MediaView>(`/media/message/${chatId}/${messageId}`, {
+    account: true,
+  });
+}
+
+export function searchMessages(
+  query: string,
+  options: Page & { chat_id?: number } = {}
+): Promise<SearchHit[]> {
+  return request<SearchHit[]>("/search", {
+    account: true,
+    query: { query, ...options },
+  });
+}
+
+export function fetchMedia(
+  chatId: number,
+  messageId: number
+): Promise<{ job_id: number }> {
+  return request<{ job_id: number }>("/media/fetch", {
+    method: "POST",
+    body: {
+      account_id: accounts.selectedId,
+      chat_id: chatId,
+      message_id: messageId,
+    },
+  });
+}
+
+export function listWatches(): Promise<Watch[]> {
+  return request<Watch[]>("/watches", { account: true });
+}
+
+export function createWatch(
+  kind: string,
+  params: Record<string, unknown>,
+  enabled: boolean
+): Promise<Watch> {
+  return request<Watch>("/watches", {
+    method: "POST",
+    body: { account_id: accounts.selectedId, kind, params, enabled },
+  });
+}
+
+export function updateWatch(
+  id: number,
+  params: Record<string, unknown>,
+  enabled: boolean
+): Promise<Watch> {
+  return request<Watch>(`/watches/${id}`, {
+    method: "PUT",
+    body: { params, enabled },
+  });
+}
+
+export function deleteWatch(id: number): Promise<void> {
+  return request<void>(`/watches/${id}`, { method: "DELETE" });
+}
+
+export function listAlerts(
+  options: Page & { seen?: boolean } = {}
+): Promise<Alert[]> {
+  return request<Alert[]>("/alerts", { account: true, query: { ...options } });
+}
+
+export function markAlertSeen(id: number): Promise<void> {
+  return request<void>(`/alerts/${id}/seen`, { method: "POST" });
+}
+
+export function listAnnotations(
+  options: { chatId?: number; messageId?: number } = {}
+): Promise<Annotation[]> {
+  return request<Annotation[]>("/annotations", {
+    account: true,
+    query: { chat_id: options.chatId, message_id: options.messageId },
+  });
+}
+
+export function createAnnotation(
+  chatId: number,
+  messageId: number,
+  text: string
+): Promise<Annotation> {
+  return request<Annotation>("/annotations", {
+    method: "POST",
+    body: {
+      account_id: accounts.selectedId,
+      chat_id: chatId,
+      message_id: messageId,
+      text,
+    },
+  });
+}
+
+export function updateAnnotation(
+  id: number,
+  text: string
+): Promise<Annotation> {
+  return request<Annotation>(`/annotations/${id}`, {
+    method: "PUT",
+    body: { text },
+  });
+}
+
+export function deleteAnnotation(id: number): Promise<void> {
+  return request<void>(`/annotations/${id}`, { method: "DELETE" });
+}

frontend/src/lib/api/media.ts

@@ -0,0 +1,175 @@
+import { requestMedia } from "$lib/api/client";
+import { getMessageMedia } from "$lib/api/endpoints";
+import type { MediaRef } from "$lib/api/types";
+import { accounts } from "$lib/stores/accounts.svelte";
+
+export type InlineMedia =
+  | {
+      state: "ready";
+      mediaId: number;
+      kind: string;
+      mime: string | null;
+      url: string;
+      transcript: string | null;
+    }
+  | { state: "not-downloaded"; mediaId: number; kind: string }
+  | { state: "missing" };
+
+export interface ViewerItem {
+  downloaded: boolean;
+  kind: string;
+  mediaId: number | null;
+  messageId: number;
+}
+
+export function viewerItemsFrom(
+  messageId: number,
+  media: MediaRef[]
+): ViewerItem[] {
+  if (media.length === 0) {
+    return [{ messageId, mediaId: null, kind: "", downloaded: false }];
+  }
+  return media.map((item) => ({
+    messageId: item.message_id,
+    mediaId: item.id,
+    kind: item.kind,
+    downloaded: item.downloaded,
+  }));
+}
+
+export type VisualKind = "image" | "video" | "other";
+
+const VIDEO_KINDS = new Set(["video", "video_note", "animation", "gif"]);
+
+export function visualKind(kind: string): VisualKind {
+  if (kind === "photo") {
+    return "image";
+  }
+  if (VIDEO_KINDS.has(kind)) {
+    return "video";
+  }
+  return "other";
+}
+
+const ready = new Map<string, InlineMedia>();
+const inflight = new Map<string, Promise<InlineMedia>>();
+
+function cacheKey(account: number, chatId: number, messageId: number): string {
+  return `${account}:${chatId}:${messageId}`;
+}
+
+async function resolve(
+  chatId: number,
+  messageId: number
+): Promise<InlineMedia> {
+  let meta: Awaited<ReturnType<typeof getMessageMedia>>;
+  try {
+    meta = await getMessageMedia(chatId, messageId);
+  } catch {
+    return { state: "missing" };
+  }
+  if (!meta.downloaded) {
+    return { state: "not-downloaded", mediaId: meta.id, kind: meta.kind };
+  }
+  const blob = await requestMedia(meta.id);
+  if (blob.state === "ready") {
+    return {
+      state: "ready",
+      mediaId: meta.id,
+      kind: meta.kind,
+      mime: blob.mime,
+      url: blob.url,
+      transcript: meta.extracted_text,
+    };
+  }
+  if (blob.state === "not-downloaded") {
+    return { state: "not-downloaded", mediaId: meta.id, kind: meta.kind };
+  }
+  return { state: "missing" };
+}
+
+const byId = new Map<string, InlineMedia>();
+const byIdInflight = new Map<string, Promise<InlineMedia>>();
+
+async function resolveById(media: MediaRef): Promise<InlineMedia> {
+  if (media.id === null) {
+    return { state: "missing" };
+  }
+  if (!media.downloaded) {
+    return { state: "not-downloaded", mediaId: media.id, kind: media.kind };
+  }
+  const blob = await requestMedia(media.id);
+  if (blob.state === "ready") {
+    return {
+      state: "ready",
+      mediaId: media.id,
+      kind: media.kind,
+      mime: blob.mime,
+      url: blob.url,
+      transcript: null,
+    };
+  }
+  if (blob.state === "not-downloaded") {
+    return { state: "not-downloaded", mediaId: media.id, kind: media.kind };
+  }
+  return { state: "missing" };
+}
+
+export function loadMediaItem(media: MediaRef): Promise<InlineMedia> {
+  const account = accounts.selectedId;
+  if (account === null || media.id === null) {
+    return Promise.resolve<InlineMedia>({ state: "missing" });
+  }
+  const key = `${account}:${media.id}`;
+  const cached = byId.get(key);
+  if (cached) {
+    return Promise.resolve(cached);
+  }
+  const existing = byIdInflight.get(key);
+  if (existing) {
+    return existing;
+  }
+  const promise = resolveById(media)
+    .then((result) => {
+      if (result.state === "ready") {
+        byId.set(key, result);
+      }
+      return result;
+    })
+    .finally(() => {
+      byIdInflight.delete(key);
+    });
+  byIdInflight.set(key, promise);
+  return promise;
+}
+
+export function loadInlineMedia(
+  chatId: number,
+  messageId: number
+): Promise<InlineMedia> {
+  const account = accounts.selectedId;
+  if (account === null) {
+    return Promise.resolve<InlineMedia>({ state: "missing" });
+  }
+  const key = cacheKey(account, chatId, messageId);
+  const cached = ready.get(key);
+  if (cached) {
+    return Promise.resolve(cached);
+  }
+  const existing = inflight.get(key);
+  if (existing) {
+    return existing;
+  }
+  const promise = resolve(chatId, messageId)
+    .then((result) => {
+      if (result.state === "ready") {
+        ready.set(key, result);
+      }
+      return result;
+    })
+    .finally(() => {
+      inflight.delete(key);
+    });
+  inflight.set(key, promise);
+  return promise;
+}

frontend/src/lib/api/stories.ts

@@ -0,0 +1,56 @@
+import { accounts } from "$lib/stores/accounts.svelte";
+import { auth } from "$lib/stores/auth.svelte";
+
+const BASE = import.meta.env.VITE_API_BASE ?? "/api";
+
+const ready = new Map<string, string>();
+const missing = new Set<string>();
+const inflight = new Map<string, Promise<string | null>>();
+
+function authHeaders(): Record<string, string> {
+  return auth.token ? { Authorization: `Bearer ${auth.token}` } : {};
+}
+
+async function fetchStoryMedia(
+  account: number,
+  peerId: number,
+  storyId: number,
+  key: string
+): Promise<string | null> {
+  const url = `${BASE}/stories/${peerId}/${storyId}/media?account_id=${account}`;
+  const response = await fetch(url, { headers: authHeaders() });
+  if (response.ok) {
+    const objectUrl = URL.createObjectURL(await response.blob());
+    ready.set(key, objectUrl);
+    return objectUrl;
+  }
+  missing.add(key);
+  return null;
+}
+
+export function loadStoryMedia(
+  peerId: number,
+  storyId: number
+): Promise<string | null> {
+  const account = accounts.selectedId;
+  if (account === null) {
+    return Promise.resolve(null);
+  }
+  const key = `${account}:${peerId}:${storyId}`;
+  const cached = ready.get(key);
+  if (cached) {
+    return Promise.resolve(cached);
+  }
+  if (missing.has(key)) {
+    return Promise.resolve(null);
+  }
+  const existing = inflight.get(key);
+  if (existing) {
+    return existing;
+  }
+  const promise = fetchStoryMedia(account, peerId, storyId, key).finally(() => {
+    inflight.delete(key);
+  });
+  inflight.set(key, promise);
+  return promise;
+}

frontend/src/lib/api/types.ts

@@ -0,0 +1,483 @@
+export type ChatKind = "private" | "group";
+export type PolicyScopeType =
+  | "default_dm"
+  | "default_group"
+  | "default_channel"
+  | "folder"
+  | "chat";
+export type SearchSource = "text" | "stt";
+export type JobStatus =
+  | "pending"
+  | "running"
+  | "done"
+  | "failed"
+  | "canceled"
+  | "paused";
+
+export interface Account {
+  account_id: number;
+  is_active: boolean;
+  label: string | null;
+  phone: string | null;
+  tg_user_id: number | null;
+}
+
+export interface Chat {
+  chat_id: number;
+  has_avatar: boolean;
+  is_bot: boolean;
+  is_broadcast: boolean;
+  is_contact: boolean;
+  kind: ChatKind;
+  last_date: string | null;
+  last_sender_id: number | null;
+  last_text: string | null;
+  message_count: number;
+  title: string | null;
+}
+
+export interface EntityView {
+  custom_emoji_id: string | null;
+  language: string | null;
+  length: number;
+  offset: number;
+  type: string;
+  url: string | null;
+}
+
+export interface ReplyView {
+  media_kind: string | null;
+  message_id: number | null;
+  sender_id: number | null;
+  sender_name: string | null;
+  text: string | null;
+}
+
+export interface ForwardView {
+  chat_id: number | null;
+  chat_title: string | null;
+  date: string | null;
+  from_id: number | null;
+  from_name: string | null;
+  kind: "channel" | "hidden" | "user";
+  message_id: number | null;
+  signature: string | null;
+}
+
+export interface MediaRef {
+  downloaded: boolean;
+  duration: number | null;
+  file_size: number | null;
+  height: number | null;
+  id: number | null;
+  kind: string;
+  message_id: number;
+  mime: string | null;
+  ttl_seconds: number | null;
+  width: number | null;
+}
+
+export interface ReactionCount {
+  chosen: boolean;
+  count: number;
+  custom_emoji_id: string | null;
+  emoji: string | null;
+}
+
+export interface InlineButton {
+  data: string | null;
+  kind: "callback" | "other" | "switch" | "url";
+  text: string;
+  url: string | null;
+}
+
+export interface WebPageView {
+  description: string | null;
+  display_url: string | null;
+  has_photo: boolean;
+  site_name: string | null;
+  title: string | null;
+  type: string | null;
+  url: string;
+}
+
+export interface PollOption {
+  correct: boolean | null;
+  text: string;
+  vote_percentage: number;
+  voter_count: number;
+}
+
+export interface PollView {
+  anonymous: boolean;
+  closed: boolean;
+  multiple: boolean;
+  options: PollOption[];
+  question: string;
+  quiz: boolean;
+  total_voter_count: number;
+}
+
+export interface ContactView {
+  first_name: string | null;
+  last_name: string | null;
+  phone_number: string | null;
+  user_id: number | null;
+}
+
+export interface LocationView {
+  address: string | null;
+  latitude: number | null;
+  longitude: number | null;
+  title: string | null;
+}
+
+export interface ServiceView {
+  duration: number | null;
+  kind: string;
+  member_ids: number[] | null;
+  pinned_message_id: number | null;
+}
+
+export interface PinnedView {
+  media_kind: string | null;
+  message_id: number;
+  sender_name: string | null;
+  text: string | null;
+}
+
+export interface StickerView {
+  emoji: string | null;
+  height: number | null;
+  is_animated: boolean;
+  is_video: boolean;
+  mime: string | null;
+  set_name: string | null;
+  width: number | null;
+}
+
+export interface MessageView {
+  chat_id: number;
+  contact: ContactView | null;
+  date: string;
+  deleted_at: string | null;
+  edited_at: string | null;
+  entities: EntityView[];
+  forward: ForwardView | null;
+  has_media: boolean;
+  inline_buttons: InlineButton[][];
+  is_animated_emoji: boolean;
+  is_self_destruct: boolean;
+  is_sticker: boolean;
+  location: LocationView | null;
+  media: MediaRef[];
+  media_group_id: string | null;
+  message_id: number;
+  poll: PollView | null;
+  quote: string | null;
+  reactions: ReactionCount[];
+  read: boolean;
+  reply: ReplyView | null;
+  sender_id: number | null;
+  service: ServiceView | null;
+  sticker: StickerView | null;
+  text: string | null;
+  via_bot_id: number | null;
+  web_page: WebPageView | null;
+}
+
+export interface MessageVersion {
+  edit_date: string | null;
+  observed_at: string;
+  text: string | null;
+}
+
+export interface MediaVersion {
+  file_size: number | null;
+  id: number;
+  kind: string;
+  mime: string | null;
+  observed_at: string;
+  storage_key: string;
+}
+
+export interface SearchHit {
+  chat_id: number;
+  date: string;
+  extracted_text: string | null;
+  message_id: number;
+  sender_id: number | null;
+  source: SearchSource;
+  text: string | null;
+}
+
+export interface MediaView {
+  account_id: number;
+  chat_id: number;
+  created_at: string;
+  downloaded: boolean;
+  extracted_text: string | null;
+  file_size: number | null;
+  id: number;
+  kind: string;
+  message_id: number;
+  mime: string | null;
+  storage_key: string | null;
+  ttl_seconds: number | null;
+}
+
+export interface Callback {
+  data: string | null;
+  label: string | null;
+  position: number;
+}
+
+export interface AvatarHistoryView {
+  downloaded: boolean;
+  first_seen_at: string;
+  unique_id: string;
+}
+
+export interface ChatLinkView {
+  date: string | null;
+  kind: string;
+  message_id: number;
+  url: string;
+  web_site_name: string | null;
+  web_title: string | null;
+  web_url: string | null;
+}
+
+export interface DayCount {
+  count: number;
+  day: string;
+  outgoing: number;
+}
+
+export interface ReactionView {
+  added_at: string;
+  peer_id: number;
+  reaction: string;
+  removed_at: string | null;
+}
+
+export interface CallbackView {
+  data: string | null;
+  label: string | null;
+  position: number;
+}
+
+export interface LinkView {
+  kind: string;
+  position: number;
+  url: string;
+  web_description: string | null;
+  web_site_name: string | null;
+  web_title: string | null;
+  web_url: string | null;
+}
+
+export interface MessageAt {
+  date: string;
+  message_id: number;
+}
+
+export interface Reaction {
+  added_at: string;
+  peer_id: number;
+  reaction: string;
+  removed_at: string | null;
+}
+
+export interface LinkPreview {
+  kind: string;
+  position: number;
+  url: string;
+  web_description: string | null;
+  web_site_name: string | null;
+  web_title: string | null;
+  web_url: string | null;
+}
+
+export interface PresenceSample {
+  last_online_date: string | null;
+  next_offline_date: string | null;
+  peer_id: number;
+  status: string;
+  ts: string;
+}
+
+export interface PresenceHourly {
+  bucket: string;
+  last_seen: string | null;
+  online_samples: number;
+  peer_id: number;
+  samples: number;
+}
+
+export interface VolumeBucket {
+  bucket: string;
+  incoming: number;
+  outgoing: number;
+  total: number;
+}
+
+export interface ResponseStats {
+  mine_count: number;
+  mine_median_seconds: number | null;
+  their_count: number;
+  their_median_seconds: number | null;
+}
+
+export interface PeerView {
+  first_name: string | null;
+  has_avatar: boolean;
+  is_deleted_account: boolean;
+  last_name: string | null;
+  peer_id: number;
+  phone: string | null;
+  photo_unique_id: string | null;
+  updated_at: string;
+  username: string | null;
+}
+
+export interface PeerHistoryView {
+  first_name: string | null;
+  is_deleted_account: boolean;
+  last_name: string | null;
+  observed_at: string;
+  phone: string | null;
+  photo_unique_id: string | null;
+  username: string | null;
+}
+
+export interface StoryView {
+  caption: string | null;
+  date: string | null;
+  deleted: boolean;
+  downloaded: boolean;
+  expire_date: string | null;
+  media_kind: string | null;
+  peer_id: number;
+  pinned: boolean;
+  storage_key: string | null;
+  story_id: number;
+  views: number | null;
+}
+
+export interface Annotation {
+  account_id: number;
+  chat_id: number;
+  created_at: string;
+  id: number;
+  message_id: number;
+  text: string;
+  updated_at: string;
+}
+
+export interface CaptureToggles {
+  backfill: boolean;
+  media: boolean;
+  messages: boolean;
+  presence: boolean;
+  profile_history: boolean;
+  reactions: boolean;
+  self_destruct_media: boolean;
+  stories: boolean;
+  stt: boolean;
+  track_edits_deletes: boolean;
+}
+
+export interface PolicyRecord extends CaptureToggles {
+  account_id: number | null;
+  id: number;
+  scope_id: number | null;
+  scope_type: PolicyScopeType;
+}
+
+export type PolicyChatKind = "dm" | "group" | "channel";
+
+export interface PolicyCreate extends CaptureToggles {
+  scope_id?: number | null;
+  scope_type: PolicyScopeType;
+}
+
+export interface Folder {
+  bots: boolean;
+  broadcasts: boolean;
+  contacts: boolean;
+  exclude_ids: number[];
+  folder_id: number;
+  groups: boolean;
+  include_ids: number[];
+  is_chatlist: boolean;
+  non_contacts: boolean;
+  order_index: number;
+  pinned_ids: number[];
+  title: string;
+}
+
+export interface Watch {
+  account_id: number;
+  created_at: string;
+  enabled: boolean;
+  id: number;
+  kind: string;
+  params: Record<string, unknown>;
+  updated_at: string;
+}
+
+export interface Alert {
+  account_id: number;
+  created_at: string;
+  id: number;
+  payload: Record<string, unknown>;
+  seen: boolean;
+  ts: string;
+  watch_id: number;
+}
+
+export interface JobView {
+  account_id: number;
+  attempts: number;
+  created_at: string;
+  cursor: Record<string, unknown> | null;
+  error: string | null;
+  finished_at: string | null;
+  flood_waits: number;
+  id: number;
+  kind: string;
+  params: Record<string, unknown>;
+  progress: Record<string, unknown>;
+  started_at: string | null;
+  status: JobStatus;
+}
+
+export interface LiveMessageEvent {
+  message: MessageView;
+  type: "message" | "edit" | "reaction";
+}
+
+export interface LiveDeleteEvent {
+  chat_id: number | null;
+  message_ids: number[];
+  type: "delete";
+}
+
+export interface LivePresenceEvent {
+  peer_id: number;
+  sample: PresenceSample | null;
+  type: "presence";
+}
+
+export interface LiveReceiptEvent {
+  chat_id: number;
+  read_up_to: number;
+  type: "receipt";
+}
+
+export type LiveEvent =
+  | LiveMessageEvent
+  | LiveDeleteEvent
+  | LivePresenceEvent
+  | LiveReceiptEvent;

frontend/src/lib/components/AccountSwitcher.svelte

@@ -0,0 +1,87 @@
+<script lang="ts">
+  import { DropdownMenu } from "bits-ui";
+  import Avatar from "$lib/components/ui/Avatar.svelte";
+  import Icon from "$lib/components/ui/Icon.svelte";
+  import { accountName } from "$lib/format/peer";
+  import { accounts } from "$lib/stores/accounts.svelte";
+
+  const current = $derived(accounts.selected);
+</script>
+
+<DropdownMenu.Root>
+  <DropdownMenu.Trigger class="account-trigger">
+    {#if current}
+      <Avatar
+        name={accountName(current)}
+        colorKey={current.account_id}
+        size={2.25}
+      />
+      <span class="account-name">{accountName(current)}</span>
+    {:else}
+      <span class="account-name">No account</span>
+    {/if}
+    <Icon name="down" size="1.25rem" />
+  </DropdownMenu.Trigger>
+  <DropdownMenu.Portal>
+    <DropdownMenu.Content class="bg-menu-content" sideOffset={6} align="start">
+      {#each accounts.list as account (account.account_id)}
+        <DropdownMenu.Item
+          class="bg-menu-item"
+          data-selected={account.account_id === accounts.selectedId
+            ? ""
+            : undefined}
+          onSelect={() => accounts.select(account.account_id)}
+        >
+          <Avatar
+            name={accountName(account)}
+            colorKey={account.account_id}
+            size={1.75}
+          />
+          <span>{accountName(account)}</span>
+          {#if account.account_id === accounts.selectedId}
+            <Icon name="check" size="1.125rem" class="trailing" />
+          {/if}
+        </DropdownMenu.Item>
+      {/each}
+    </DropdownMenu.Content>
+  </DropdownMenu.Portal>
+</DropdownMenu.Root>
+
+<style lang="scss">
+  :global(.account-trigger) {
+    cursor: pointer;
+    display: flex;
+    flex: 1;
+    align-items: center;
+    gap: 0.625rem;
+
+    min-width: 0;
+    padding: 0.375rem 0.5rem;
+    border: 0;
+    border-radius: 0.625rem;
+
+    color: var(--color-text);
+    background-color: transparent;
+    transition: background-color 0.15s ease;
+
+    &:hover {
+      background-color: var(--color-chat-hover);
+    }
+  }
+
+  .account-name {
+    overflow: hidden;
+    flex: 1;
+
+    font-size: 1rem;
+    font-weight: var(--font-weight-medium);
+    text-align: start;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+  }
+
+  :global(.bg-menu-item .trailing) {
+    margin-inline-start: auto;
+    color: var(--color-primary);
+  }
+</style>

frontend/src/lib/components/ActionMessage.svelte

@@ -0,0 +1,138 @@
+<script lang="ts">
+  import type { MessageView } from "$lib/api/types";
+  import Icon from "$lib/components/ui/Icon.svelte";
+  import { accountName, peerName } from "$lib/format/peer";
+  import { accounts } from "$lib/stores/accounts.svelte";
+  import { peers } from "$lib/stores/peers.svelte";
+
+  interface Props {
+    message: MessageView;
+    onjump: (messageId: number) => void;
+  }
+
+  let { message, onjump }: Props = $props();
+
+  const ownId = $derived(accounts.selected?.tg_user_id ?? null);
+
+  function nameOf(id: number | null): string {
+    if (id === null) {
+      return "Someone";
+    }
+    if (id === ownId) {
+      return accounts.selected ? accountName(accounts.selected) : "You";
+    }
+    const peer = peers.get(id);
+    return peer ? peerName(peer) : String(id);
+  }
+
+  function durationOf(seconds: number): string {
+    const m = Math.floor(seconds / 60);
+    const s = seconds % 60;
+    return `${m}:${String(s).padStart(2, "0")}`;
+  }
+
+  const actor = $derived(nameOf(message.sender_id));
+
+  const text = $derived.by(() => {
+    const service = message.service;
+    if (!service) {
+      return "";
+    }
+    const members = service.member_ids ?? [];
+    switch (service.kind) {
+      case "new_chat_members": {
+        const selfJoin =
+          members.length === 1 && members[0] === message.sender_id;
+        if (selfJoin) {
+          return `${actor} joined the group`;
+        }
+        const names = members.map(nameOf).join(", ");
+        return names ? `${actor} added ${names}` : `${actor} joined the group`;
+      }
+      case "left_chat_members":
+        return `${actor} left the group`;
+      case "pinned_message":
+        return `${actor} pinned a message`;
+      case "group_chat_created":
+        return `${actor} created the group`;
+      case "channel_chat_created":
+        return "Channel created";
+      case "phone_call_ended":
+        return service.duration === null
+          ? "Call ended"
+          : `Call ended · ${durationOf(service.duration)}`;
+      case "phone_call_started":
+        return "Call started";
+      case "poll_option_added":
+        return `${actor} added a poll option`;
+      case "new_chat_title":
+        return `${actor} changed the group name`;
+      case "new_chat_photo":
+        return `${actor} changed the group photo`;
+      case "delete_chat_photo":
+        return `${actor} removed the group photo`;
+      default:
+        return service.kind.replace(/_/g, " ") || "Service message";
+    }
+  });
+
+  const pinned = $derived(
+    message.service?.kind === "pinned_message" &&
+      message.service.pinned_message_id !== null
+  );
+</script>
+
+<div class="ActionMessage">
+  {#if pinned}
+    <button
+      type="button"
+      class="pill action"
+      onclick={() => {
+        const id = message.service?.pinned_message_id;
+        if (id != null) {
+          onjump(id);
+        }
+      }}
+    >
+      <Icon name="pin" size="0.8125rem" />
+      <span>{text}</span>
+    </button>
+  {:else}
+    <span class="pill">{text}</span>
+  {/if}
+</div>
+
+<style lang="scss">
+  .ActionMessage {
+    display: flex;
+    justify-content: center;
+    margin: 0.5rem 0;
+  }
+
+  .pill {
+    display: inline-flex;
+    align-items: center;
+    gap: 0.3125rem;
+
+    max-width: min(30rem, 85%);
+    padding: 0.25rem 0.75rem;
+    border-radius: 1rem;
+
+    font-size: 0.8125rem;
+    font-weight: var(--font-weight-medium);
+    text-align: center;
+    color: var(--color-white);
+
+    background-color: var(--color-default-shadow);
+    backdrop-filter: blur(8px);
+  }
+
+  button.pill {
+    cursor: pointer;
+    border: 0;
+  }
+
+  button.pill:hover {
+    background-color: var(--color-default-shadow-hover, var(--color-default-shadow));
+  }
+</style>

frontend/src/lib/components/ChatHeader.svelte

@@ -0,0 +1,254 @@
+<script lang="ts">
+  import {
+    enqueueBackfill,
+    getCurrentPresence,
+    getPeer,
+  } from "$lib/api/endpoints";
+  import type { PeerView, PresenceSample } from "$lib/api/types";
+  import Avatar from "$lib/components/ui/Avatar.svelte";
+  import Button from "$lib/components/ui/Button.svelte";
+  import ContextMenu from "$lib/components/ui/ContextMenu.svelte";
+  import ContextMenuItem from "$lib/components/ui/ContextMenuItem.svelte";
+  import Icon from "$lib/components/ui/Icon.svelte";
+  import { peerName } from "$lib/format/peer";
+  import { formatPresence } from "$lib/format/presence";
+  import { accounts } from "$lib/stores/accounts.svelte";
+  import { chats } from "$lib/stores/chats.svelte";
+  import { events } from "$lib/stores/events.svelte";
+  import { toasts } from "$lib/stores/toasts.svelte";
+  import { ui } from "$lib/stores/ui.svelte";
+
+  interface Props {
+    chatId: number;
+  }
+
+  let { chatId }: Props = $props();
+
+  const isDm = $derived(chatId > 0);
+  const chat = $derived(chats.byId(chatId));
+  let peer = $state<PeerView | null>(null);
+  let presence = $state<PresenceSample | null>(null);
+  let backfilling = $state(false);
+
+  async function backfill() {
+    if (backfilling) {
+      return;
+    }
+    backfilling = true;
+    try {
+      await enqueueBackfill(chatId, true);
+      toasts.success("Бэкфилл запущен");
+    } catch {
+      toasts.error("Не удалось запустить бэкфилл");
+    } finally {
+      backfilling = false;
+    }
+  }
+
+  $effect(() => {
+    if (accounts.selectedId === null || !isDm) {
+      peer = null;
+      return;
+    }
+    let active = true;
+    peer = null;
+    getPeer(chatId)
+      .then((result) => {
+        if (active) {
+          peer = result;
+        }
+      })
+      .catch(() => {
+        if (active) {
+          peer = null;
+        }
+      });
+    return () => {
+      active = false;
+    };
+  });
+
+  $effect(() => {
+    if (accounts.selectedId === null || !isDm) {
+      presence = null;
+      return;
+    }
+    let active = true;
+    presence = null;
+    getCurrentPresence(chatId)
+      .then((result) => {
+        if (active) {
+          presence = result;
+        }
+      })
+      .catch(() => {
+        if (active) {
+          presence = null;
+        }
+      });
+    const unsub = events.subscribe((event) => {
+      if (
+        event.type === "presence" &&
+        event.peer_id === chatId &&
+        event.sample
+      ) {
+        presence = event.sample;
+      }
+    });
+    return () => {
+      active = false;
+      unsub();
+    };
+  });
+
+  const fallbackTitle = $derived(
+    chat?.title ?? (isDm ? "Удалённый аккаунт" : `Chat ${chatId}`)
+  );
+  const title = $derived(isDm && peer ? peerName(peer) : fallbackTitle);
+  const subtitle = $derived.by(() => {
+    if (isDm) {
+      if (presence) {
+        return formatPresence(presence);
+      }
+      if (peer?.username) {
+        return `@${peer.username}`;
+      }
+      return peer?.phone ?? `ID ${chatId}`;
+    }
+    const count = chat?.message_count ?? 0;
+    return count > 0 ? `${count} messages` : "group";
+  });
+  const avatarKind = $derived(isDm ? "peer" : "chat");
+  const hasAvatar = $derived(chat?.has_avatar ?? Boolean(peer?.has_avatar));
+</script>
+
+<header class="chat-header">
+  <ContextMenu>
+    {#snippet children({ props })}
+      <button
+        {...props}
+        type="button"
+        class="peek"
+        onclick={() => ui.openPanel("profile")}
+        aria-label="Открыть профиль"
+      >
+        <Avatar
+          name={title}
+          colorKey={chatId}
+          size={2.5}
+          avatar={{ kind: avatarKind, id: chatId }}
+          {hasAvatar}
+          deleted={peer?.is_deleted_account ?? false}
+        />
+        <div class="info">
+          <h2 class="title">{title}</h2>
+          <span
+            class="subtitle"
+            class:online={isDm && presence?.status === "online"}
+          >
+            {subtitle}
+          </span>
+        </div>
+      </button>
+    {/snippet}
+    {#snippet menu()}
+      <ContextMenuItem icon="info" onselect={() => ui.openPanel("profile")}
+        >Открыть профиль</ContextMenuItem
+      >
+      <ContextMenuItem
+        icon="play-story"
+        onselect={() => ui.openPanel("stories")}
+        >Сторис</ContextMenuItem
+      >
+    {/snippet}
+  </ContextMenu>
+  <div class="actions">
+    <Button
+      variant="translucent"
+      round
+      smaller
+      onclick={() => ui.openPanel("search")}
+      aria-label="Поиск в чате"
+    >
+      <Icon name="search" />
+    </Button>
+    <Button
+      variant="translucent"
+      round
+      smaller
+      onclick={() => ui.openPanel("presence")}
+      aria-label="Аналитика"
+    >
+      <Icon name="stats" />
+    </Button>
+    <Button
+      variant="translucent"
+      round
+      smaller
+      loading={backfilling}
+      onclick={backfill}
+      aria-label="Скачать историю"
+    >
+      <Icon name="cloud-download" />
+    </Button>
+  </div>
+</header>
+
+<style lang="scss">
+  .chat-header {
+    display: flex;
+    align-items: center;
+    gap: 0.625rem;
+
+    height: var(--header-height);
+    padding: 0 1rem;
+    border-bottom: 1px solid var(--color-borders);
+
+    background-color: var(--color-background);
+  }
+
+  .peek {
+    display: flex;
+    flex: 1;
+    align-items: center;
+    gap: 0.625rem;
+
+    min-width: 0;
+    padding: 0;
+    border: 0;
+
+    text-align: left;
+    cursor: pointer;
+    background: transparent;
+  }
+
+  .info {
+    overflow: hidden;
+    min-width: 0;
+  }
+
+  .actions {
+    display: flex;
+    align-items: center;
+    gap: 0.25rem;
+    margin-left: auto;
+  }
+
+  .title {
+    overflow: hidden;
+    margin: 0;
+    font-size: 1rem;
+    font-weight: var(--font-weight-medium);
+    text-overflow: ellipsis;
+    white-space: nowrap;
+  }
+
+  .subtitle {
+    font-size: 0.8125rem;
+    color: var(--color-text-secondary);
+
+    &.online {
+      color: var(--color-primary);
+    }
+  }
+</style>

frontend/src/lib/components/ChatList.svelte

@@ -0,0 +1,104 @@
+<script lang="ts">
+  import { cubicOut } from "svelte/easing";
+  import { fly } from "svelte/transition";
+  import { goto } from "$app/navigation";
+  import { page } from "$app/state";
+  import ChatListItem from "$lib/components/ChatListItem.svelte";
+  import EmptyState from "$lib/components/ui/EmptyState.svelte";
+  import Skeleton from "$lib/components/ui/Skeleton.svelte";
+  import { folderContains } from "$lib/format/folders";
+  import { accounts } from "$lib/stores/accounts.svelte";
+  import { chats } from "$lib/stores/chats.svelte";
+  import { folders } from "$lib/stores/folders.svelte";
+  import { toasts } from "$lib/stores/toasts.svelte";
+
+  const skeletonRows = Array.from({ length: 9 }, (_, index) => index);
+
+  const activeChatId = $derived(
+    page.params.chatId ? Number(page.params.chatId) : null
+  );
+
+  const selectedFolder = $derived(folders.selected);
+  const visibleChats = $derived(
+    selectedFolder === null
+      ? chats.list
+      : chats.list.filter((chat) => folderContains(selectedFolder, chat))
+  );
+
+  const SCROLL_THRESHOLD = 600;
+
+  $effect(() => {
+    if (accounts.selectedId === null) {
+      return;
+    }
+    chats.load().catch(() => toasts.error("Failed to load chats"));
+    folders.load().catch(() => toasts.error("Failed to load folders"));
+  });
+
+  function onScroll(event: Event) {
+    const el = event.currentTarget as HTMLElement;
+    if (el.scrollTop + el.clientHeight >= el.scrollHeight - SCROLL_THRESHOLD) {
+      chats.loadMore().catch(() => undefined);
+    }
+  }
+</script>
+
+<div class="chat-list custom-scroll" onscroll={onScroll}>
+  {#if chats.loading && chats.list.length === 0}
+    {#each skeletonRows as index (index)}
+      <div class="row-skeleton">
+        <Skeleton width="3rem" height="3rem" circle />
+        <div class="row-skeleton-lines">
+          <Skeleton width="55%" height="0.875rem" />
+          <Skeleton width="80%" height="0.8125rem" />
+        </div>
+      </div>
+    {/each}
+  {:else if chats.list.length === 0}
+    <EmptyState title="No chats yet" />
+  {:else}
+    {#key folders.selectedId}
+      <div
+        class="folder-view"
+        in:fly={{ x: folders.direction * 24, duration: 200, easing: cubicOut }}
+      >
+        {#if visibleChats.length === 0 && !chats.hasMore}
+          <EmptyState
+            title="Empty folder"
+            description="No chats match this folder yet"
+          />
+        {:else}
+          {#each visibleChats as chat (chat.chat_id)}
+            <ChatListItem
+              {chat}
+              selected={chat.chat_id === activeChatId}
+              onclick={() => goto(`/app/${chat.chat_id}`)}
+            />
+          {/each}
+        {/if}
+      </div>
+    {/key}
+  {/if}
+</div>
+
+<style lang="scss">
+  .chat-list {
+    overflow-y: auto;
+    flex: 1;
+    padding: 0.25rem 0.4375rem;
+  }
+
+  .row-skeleton {
+    display: flex;
+    align-items: center;
+    gap: 0.625rem;
+    padding: 0.5625rem 0.5rem;
+  }
+
+  .row-skeleton-lines {
+    display: flex;
+    flex: 1;
+    flex-direction: column;
+    gap: 0.5rem;
+  }
+</style>

frontend/src/lib/components/ChatListItem.svelte

@@ -0,0 +1,197 @@
+<script lang="ts">
+  import { goto } from "$app/navigation";
+  import { ripple } from "$lib/actions/ripple";
+  import type { Chat } from "$lib/api/types";
+  import Avatar from "$lib/components/ui/Avatar.svelte";
+  import ContextMenu from "$lib/components/ui/ContextMenu.svelte";
+  import ContextMenuItem from "$lib/components/ui/ContextMenuItem.svelte";
+  import { formatListDate } from "$lib/format/datetime";
+  import { accounts } from "$lib/stores/accounts.svelte";
+  import { peers } from "$lib/stores/peers.svelte";
+  import { type RightPanel, ui } from "$lib/stores/ui.svelte";
+
+  interface Props {
+    chat: Chat;
+    onclick: () => void;
+    selected: boolean;
+  }
+
+  let { chat, selected, onclick }: Props = $props();
+
+  async function openWith(panel: RightPanel) {
+    await goto(`/app/${chat.chat_id}`);
+    ui.openPanel(panel);
+  }
+
+  const title = $derived(
+    chat.title ??
+      (chat.chat_id > 0 ? "Удалённый аккаунт" : `Chat ${chat.chat_id}`)
+  );
+  const avatarKind = $derived(chat.chat_id > 0 ? "peer" : "chat");
+  const ownId = $derived(accounts.selected?.tg_user_id ?? null);
+  const showSender = $derived(
+    chat.kind === "group" && chat.last_sender_id !== null
+  );
+
+  $effect(() => {
+    if (showSender && chat.last_sender_id !== ownId) {
+      peers.ensure([chat.last_sender_id as number]);
+    }
+  });
+
+  const senderPrefix = $derived.by(() => {
+    if (!showSender) {
+      return "";
+    }
+    if (chat.last_sender_id === ownId) {
+      return "You: ";
+    }
+    const peer = peers.get(chat.last_sender_id as number);
+    if (!peer) {
+      return "";
+    }
+    return `${peer.first_name ?? peer.username ?? peer.peer_id}: `;
+  });
+
+  const preview = $derived(
+    chat.last_text ?? (chat.message_count > 0 ? "Media" : "")
+  );
+</script>
+
+<ContextMenu>
+  {#snippet children({ props })}
+    <button
+      {...props}
+      type="button"
+      class="Chat ListItem-button"
+      class:selected
+      use:ripple
+      {onclick}
+    >
+      <Avatar
+        name={title}
+        colorKey={chat.chat_id}
+        avatar={{ kind: avatarKind, id: chat.chat_id }}
+        hasAvatar={chat.has_avatar}
+      />
+      <div class="info">
+        <div class="info-row">
+          <h3 class="title">{title}</h3>
+          <span class="date">{formatListDate(chat.last_date)}</span>
+        </div>
+        <div class="subtitle">
+          <span class="last-message">
+            {#if senderPrefix}
+              <span class="sender">{senderPrefix}</span>
+            {/if}
+            {preview}
+          </span>
+        </div>
+      </div>
+    </button>
+  {/snippet}
+  {#snippet menu()}
+    <ContextMenuItem icon="open-in-new-tab" onselect={onclick}
+      >Открыть</ContextMenuItem
+    >
+    <ContextMenuItem icon="info" onselect={() => openWith("profile")}
+      >Профиль</ContextMenuItem
+    >
+    <ContextMenuItem icon="search" onselect={() => openWith("search")}
+      >Поиск в чате</ContextMenuItem
+    >
+    <ContextMenuItem icon="stats" onselect={() => openWith("presence")}
+      >Аналитика</ContextMenuItem
+    >
+    <ContextMenuItem icon="play-story" onselect={() => openWith("stories")}
+      >Сторис</ContextMenuItem
+    >
+  {/snippet}
+</ContextMenu>
+
+<style lang="scss">
+  .Chat {
+    cursor: pointer;
+    position: relative;
+    overflow: hidden;
+    display: flex;
+    align-items: center;
+    gap: 0.625rem;
+
+    width: 100%;
+    padding: 0.5625rem 0.5rem;
+    border: 0;
+    border-radius: 0.625rem;
+
+    text-align: start;
+    color: var(--color-text);
+    background-color: transparent;
+    transition: background-color 0.15s ease;
+
+    --ripple-color: var(--color-interactive-element-hover);
+
+    @media (hover: hover) {
+      &:hover {
+        background-color: var(--color-chat-hover);
+      }
+    }
+
+    &.selected {
+      background-color: var(--color-chat-active);
+
+      .title,
+      .date,
+      .last-message,
+      .sender {
+        color: var(--color-white);
+      }
+    }
+  }
+
+  .info {
+    overflow: hidden;
+    flex: 1;
+    min-width: 0;
+  }
+
+  .info-row {
+    display: flex;
+    align-items: baseline;
+    gap: 0.5rem;
+  }
+
+  .title {
+    overflow: hidden;
+    flex: 1;
+
+    margin: 0;
+    font-size: 1rem;
+    font-weight: var(--font-weight-medium);
+    text-overflow: ellipsis;
+    white-space: nowrap;
+  }
+
+  .date {
+    flex-shrink: 0;
+    font-size: 0.75rem;
+    color: var(--color-text-secondary);
+  }
+
+  .subtitle {
+    margin-top: 0.125rem;
+  }
+
+  .last-message {
+    overflow: hidden;
+    display: block;
+
+    font-size: 0.875rem;
+    color: var(--color-text-secondary);
+    text-overflow: ellipsis;
+    white-space: nowrap;
+  }
+
+  .sender {
+    color: var(--color-text);
+  }
+</style>

frontend/src/lib/components/Contact.svelte

@@ -0,0 +1,45 @@
+<script lang="ts">
+  import type { ContactView } from "$lib/api/types";
+  import Avatar from "$lib/components/ui/Avatar.svelte";
+
+  interface Props {
+    contact: ContactView;
+  }
+
+  let { contact }: Props = $props();
+
+  const name = $derived(
+    [contact.first_name, contact.last_name].filter(Boolean).join(" ") ||
+      "Contact"
+  );
+</script>
+
+<div class="Contact">
+  <Avatar {name} colorKey={contact.user_id ?? 0} size={2.5} />
+  <div class="info">
+    <div class="name">{name}</div>
+    {#if contact.phone_number}
+      <div class="phone">{contact.phone_number}</div>
+    {/if}
+  </div>
+</div>
+
+<style lang="scss">
+  .Contact {
+    display: flex;
+    align-items: center;
+    gap: 0.625rem;
+
+    min-width: 12rem;
+    margin-bottom: 0.25rem;
+  }
+
+  .name {
+    font-weight: var(--font-weight-medium);
+  }
+
+  .phone {
+    font-size: 0.875rem;
+    color: var(--color-text-secondary);
+  }
+</style>

frontend/src/lib/components/CustomEmoji.svelte

@@ -0,0 +1,65 @@
+<script lang="ts">
+  import {
+    type CustomEmojiAsset,
+    loadCustomEmoji,
+  } from "$lib/api/custom-emoji";
+
+  interface Props {
+    id: string;
+    size?: number;
+  }
+
+  let { id, size = 1.25 }: Props = $props();
+
+  let asset = $state<CustomEmojiAsset | null>(null);
+
+  $effect(() => {
+    asset = null;
+    let active = true;
+    loadCustomEmoji(id).then((resolved) => {
+      if (active) {
+        asset = resolved;
+      }
+    });
+    return () => {
+      active = false;
+    };
+  });
+
+  const isVideo = $derived(asset?.mime.startsWith("video/") ?? false);
+  const isImage = $derived(asset?.mime.startsWith("image/") ?? false);
+</script>
+
+<span class="CustomEmoji" style="--emoji-size: {size}rem;">
+  {#if asset && isVideo}
+    <video src={asset.url} autoplay loop muted playsinline></video>
+  {:else if asset && isImage}
+    <img src={asset.url} alt="emoji">
+  {:else}
+    <span class="placeholder">🧩</span>
+  {/if}
+</span>
+
+<style lang="scss">
+  .CustomEmoji {
+    display: inline-flex;
+    flex-shrink: 0;
+    align-items: center;
+    justify-content: center;
+    width: var(--emoji-size);
+    height: var(--emoji-size);
+    vertical-align: middle;
+  }
+
+  img,
+  video {
+    width: 100%;
+    height: 100%;
+    object-fit: contain;
+  }
+
+  .placeholder {
+    font-size: calc(var(--emoji-size) * 0.85);
+    line-height: 1;
+  }
+</style>

frontend/src/lib/components/EntityText.svelte

@@ -0,0 +1,179 @@
+<script lang="ts">
+  import { SvelteSet } from "svelte/reactivity";
+  import type { EntityView } from "$lib/api/types";
+  import {
+    buildEntityTree,
+    type EntityNode,
+    type EntityTreeNode,
+    jumboEmojiCount,
+    linkHref,
+  } from "$lib/format/entities";
+
+  interface Props {
+    entities: EntityView[];
+    own?: boolean;
+    text: string;
+  }
+
+  let { text, entities, own = false }: Props = $props();
+
+  const nodes = $derived(buildEntityTree(text, entities));
+  const jumbo = $derived(entities.length === 0 ? jumboEmojiCount(text) : 0);
+
+  const revealed = new SvelteSet<string>();
+
+  function spoilerKey(entity: EntityView): string {
+    return `${entity.offset}:${entity.length}`;
+  }
+</script>
+
+{#snippet tree(items: EntityTreeNode[])}
+  {#each items as node, i (i)}
+    {#if node.kind === "text"}
+      {node.text}
+    {:else}
+      {@render entity(node)}
+    {/if}
+  {/each}
+{/snippet}
+
+{#snippet entity(node: EntityNode)}
+  {@const type = node.entity.type}
+  {#if type === "bold"}
+    <strong>{@render tree(node.children)}</strong>
+  {:else if type === "italic"}
+    <em>{@render tree(node.children)}</em>
+  {:else if type === "underline"}
+    <ins>{@render tree(node.children)}</ins>
+  {:else if type === "strikethrough"}
+    <del>{@render tree(node.children)}</del>
+  {:else if type === "spoiler"}
+    {@const key = spoilerKey(node.entity)}
+    <button
+      type="button"
+      class="spoiler"
+      class:revealed={revealed.has(key)}
+      onclick={() => revealed.add(key)}
+    >
+      {@render tree(node.children)}
+    </button>
+  {:else if type === "code"}
+    <code class="code" class:own>{@render tree(node.children)}</code>
+  {:else if type === "pre"}
+    <pre
+      class="pre"
+      class:own
+    >{#if node.entity.language}<span class="pre-lang">{node.entity.language}</span>{/if}<code>{@render tree(node.children)}</code></pre>
+  {:else if type === "blockquote"}
+    <blockquote class="blockquote">{@render tree(node.children)}</blockquote>
+  {:else if type === "url" || type === "text_link" || type === "email" || type === "phone_number"}
+    <a
+      class="link"
+      href={linkHref(node)}
+      target="_blank"
+      rel="noopener noreferrer"
+      >{@render tree(node.children)}</a
+    >
+  {:else if type === "mention" || type === "text_mention" || type === "hashtag" || type === "cashtag" || type === "bot_command"}
+    <span class="link">{@render tree(node.children)}</span>
+  {:else}
+    {@render tree(node.children)}
+  {/if}
+{/snippet}
+
+<span class="EntityText" class:jumbo={jumbo > 0} class:jumbo-1={jumbo === 1}>
+  {@render tree(nodes)}
+</span>
+
+<style lang="scss">
+  .EntityText {
+    overflow-wrap: anywhere;
+    white-space: pre-wrap;
+
+    &.jumbo {
+      font-size: 1.75rem;
+      line-height: 1.25;
+    }
+
+    &.jumbo-1 {
+      font-size: 2.5rem;
+    }
+  }
+
+  .link {
+    color: var(--color-links);
+    text-decoration: none;
+    word-break: break-all;
+
+    &:hover {
+      text-decoration: underline;
+    }
+  }
+
+  .code,
+  .pre {
+    font-family: var(--font-family-monospace, monospace);
+    font-size: 0.9375rem;
+    color: var(--color-code);
+    background-color: var(--color-code-bg);
+
+    &.own {
+      color: var(--color-code-own);
+      background-color: var(--color-code-own-bg);
+    }
+  }
+
+  .code {
+    padding: 0.0625rem 0.25rem;
+    border-radius: 0.25rem;
+  }
+
+  .pre {
+    overflow-x: auto;
+
+    display: block;
+    margin: 0.125rem 0;
+    padding: 0.375rem 0.5rem;
+    border-radius: 0.375rem;
+
+    white-space: pre;
+  }
+
+  .pre-lang {
+    display: block;
+    margin-bottom: 0.25rem;
+
+    font-size: 0.75rem;
+    opacity: 0.7;
+  }
+
+  .blockquote {
+    margin: 0.125rem 0;
+    padding: 0.125rem 0.5rem;
+    border-left: 0.1875rem solid var(--color-links);
+    border-radius: 0.25rem;
+
+    background-color: var(--color-primary-tint);
+  }
+
+  .spoiler {
+    cursor: pointer;
+
+    padding: 0;
+    border: none;
+
+    font: inherit;
+    color: transparent;
+    text-shadow: none;
+
+    background-color: var(--color-text);
+    border-radius: 0.25rem;
+
+    transition: color 0.15s, background-color 0.15s;
+
+    &.revealed {
+      color: inherit;
+      background-color: transparent;
+    }
+  }
+</style>

frontend/src/lib/components/FolderTabs.svelte

@@ -0,0 +1,171 @@
+<script lang="ts">
+  import { folders } from "$lib/stores/folders.svelte";
+
+  interface Tab {
+    id: number | null;
+    title: string;
+  }
+
+  const tabs = $derived<Tab[]>([
+    { id: null, title: "All Chats" },
+    ...folders.list.map((folder) => ({
+      id: folder.folder_id,
+      title: folder.title,
+    })),
+  ]);
+
+  const activeTab = $derived(
+    Math.max(
+      0,
+      tabs.findIndex((tab) => tab.id === folders.selectedId)
+    )
+  );
+
+  let containerEl = $state<HTMLDivElement>();
+  let indicatorEl = $state<HTMLDivElement>();
+  let clipPath = $state("");
+
+  function updateClipPath() {
+    const indicator = indicatorEl;
+    const activeEl = indicator?.children[activeTab] as HTMLElement | undefined;
+    if (!(indicator && activeEl) || indicator.offsetWidth === 0) {
+      return;
+    }
+    const { offsetLeft, offsetWidth } = activeEl;
+    const width = indicator.offsetWidth;
+    const left = ((offsetLeft / width) * 100).toFixed(1);
+    const right = (
+      ((width - (offsetLeft + offsetWidth)) / width) *
+      100
+    ).toFixed(1);
+    clipPath = `inset(0.25rem ${right}% 0.25rem ${left}% round var(--tab-radius))`;
+  }
+
+  $effect(() => {
+    const index = activeTab;
+    const total = tabs.length;
+    updateClipPath();
+    const baseEl =
+      total > 0
+        ? (containerEl?.children[index] as HTMLElement | undefined)
+        : undefined;
+    baseEl?.scrollIntoView({ block: "nearest", inline: "nearest" });
+  });
+
+  $effect(() => {
+    if (!indicatorEl) {
+      return;
+    }
+    const observer = new ResizeObserver(() => updateClipPath());
+    observer.observe(indicatorEl);
+    return () => observer.disconnect();
+  });
+</script>
+
+<div bind:this={containerEl} class="container" class:ready={clipPath !== ""}>
+  {#each tabs as tab (tab.id)}
+    <button type="button" class="tab" onclick={() => folders.select(tab.id)}>
+      {tab.title}
+    </button>
+  {/each}
+
+  <div
+    bind:this={indicatorEl}
+    class="active-indicator"
+    style={clipPath ? `clip-path: ${clipPath}` : undefined}
+    aria-hidden="true"
+  >
+    {#each tabs as tab (tab.id)}
+      <button type="button" class="tab" tabindex="-1">{tab.title}</button>
+    {/each}
+  </div>
+</div>
+
+<style lang="scss">
+  .container,
+  .active-indicator {
+    display: flex;
+    flex-shrink: 0;
+    flex-wrap: nowrap;
+    align-items: center;
+
+    padding-block: 0.375rem;
+    padding-inline: 0.25rem;
+  }
+
+  .container {
+    --tab-radius: 1.25rem;
+
+    user-select: none;
+    scrollbar-width: none;
+
+    position: relative;
+
+    overflow-x: auto;
+
+    border-radius: 1.5rem;
+
+    opacity: 0;
+    background-color: var(--color-background);
+    box-shadow: 0 1px 8px 0 rgba(0, 0, 0, 0.1);
+
+    transition: opacity 150ms;
+
+    &::-webkit-scrollbar {
+      display: none;
+    }
+
+    &.ready {
+      opacity: 1;
+    }
+  }
+
+  .active-indicator {
+    pointer-events: none;
+    will-change: clip-path;
+
+    isolation: isolate;
+    position: absolute;
+    z-index: 10;
+    inset: 0;
+
+    contain: layout style paint;
+    overflow: hidden;
+
+    width: fit-content;
+
+    background-color: var(--color-primary-opacity);
+
+    transition: clip-path var(--slide-transition);
+  }
+
+  .tab {
+    cursor: var(--custom-cursor, pointer);
+
+    display: flex;
+    flex-shrink: 0;
+    gap: 0.25rem;
+    align-items: center;
+
+    padding: 0.375rem 1rem;
+    border: none;
+    border-radius: var(--tab-radius);
+
+    font-family: inherit;
+    font-size: 1rem;
+    font-weight: var(--font-weight-medium);
+    color: var(--color-text-secondary);
+    white-space: nowrap;
+
+    appearance: none;
+    background: none;
+
+    &:hover {
+      opacity: 0.85;
+    }
+
+    .active-indicator & {
+      color: var(--color-primary);
+    }
+  }
+</style>

frontend/src/lib/components/ForwardHeader.svelte

@@ -0,0 +1,60 @@
+<script lang="ts">
+  import type { ForwardView } from "$lib/api/types";
+  import { peerName } from "$lib/format/peer";
+  import { peers } from "$lib/stores/peers.svelte";
+
+  interface Props {
+    forward: ForwardView;
+  }
+
+  let { forward }: Props = $props();
+
+  const peer = $derived(
+    forward.from_id === null ? undefined : peers.get(forward.from_id)
+  );
+  const name = $derived.by(() => {
+    if (forward.kind === "channel") {
+      return forward.chat_title ?? "Channel";
+    }
+    if (forward.kind === "hidden") {
+      return forward.from_name ?? "Hidden account";
+    }
+    if (peer) {
+      return peerName(peer);
+    }
+    return forward.from_name ?? "Unknown";
+  });
+</script>
+
+<div class="ForwardHeader">
+  <span class="label">Forwarded from</span>
+  <span class="name">{name}</span>
+  {#if forward.signature}
+    <span class="signature">({forward.signature})</span>
+  {/if}
+</div>
+
+<style lang="scss">
+  .ForwardHeader {
+    overflow: hidden;
+
+    margin-bottom: 0.1875rem;
+
+    font-size: 0.9375rem;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+  }
+
+  .label {
+    color: var(--color-text-secondary);
+  }
+
+  .name {
+    font-weight: var(--font-weight-medium);
+    color: var(--color-text);
+  }
+
+  .signature {
+    color: var(--color-text-secondary);
+  }
+</style>

frontend/src/lib/components/InlineButtons.svelte

@@ -0,0 +1,111 @@
+<script lang="ts">
+  import type { InlineButton } from "$lib/api/types";
+
+  interface Props {
+    rows: InlineButton[][];
+  }
+
+  let { rows }: Props = $props();
+
+  let copied = $state<string | null>(null);
+  let resetTimer: ReturnType<typeof setTimeout> | undefined;
+
+  async function copy(key: string, data: string): Promise<void> {
+    await navigator.clipboard.writeText(data);
+    copied = key;
+    clearTimeout(resetTimer);
+    resetTimer = setTimeout(() => {
+      copied = null;
+    }, 1500);
+  }
+</script>
+
+<div class="InlineButtons">
+  {#each rows as row, rowIndex (rowIndex)}
+    <div class="row">
+      {#each row as button, colIndex (colIndex)}
+        {@const key = `${rowIndex}:${colIndex}`}
+        {#if button.kind === "url" && button.url}
+          <a class="button" href={button.url} target="_blank" rel="noopener">
+            <span class="label">{button.text}</span>
+            <span class="corner">↗</span>
+          </a>
+        {:else if button.kind === "callback" && button.data}
+          <button
+            class="button"
+            type="button"
+            onclick={() => copy(key, button.data ?? "")}
+          >
+            <span class="label"
+              >{copied === key ? "Скопировано" : button.text}</span
+            >
+          </button>
+        {:else}
+          <span class="button static">
+            <span class="label">{button.text}</span>
+          </span>
+        {/if}
+      {/each}
+    </div>
+  {/each}
+</div>
+
+<style lang="scss">
+  .InlineButtons {
+    display: flex;
+    flex-direction: column;
+    gap: 0.1875rem;
+    margin-top: 0.25rem;
+  }
+
+  .row {
+    display: grid;
+    grid-auto-flow: column;
+    grid-auto-columns: minmax(0, 1fr);
+    gap: 0.1875rem;
+  }
+
+  .button {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    gap: 0.25rem;
+
+    min-height: 2rem;
+    padding: 0.25rem 0.5rem;
+    border: none;
+    border-radius: var(--border-radius-messages-small);
+
+    font-family: inherit;
+    font-size: 0.875rem;
+    font-weight: var(--font-weight-medium);
+    color: var(--color-text);
+    text-align: center;
+    text-decoration: none;
+
+    background-color: var(--color-message-reaction);
+    cursor: pointer;
+
+    transition: background-color 150ms;
+
+    &:hover:not(.static) {
+      background-color: var(--color-message-reaction-hover);
+    }
+
+    &.static {
+      cursor: default;
+    }
+  }
+
+  .label {
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+  }
+
+  .corner {
+    flex-shrink: 0;
+    font-size: 0.75rem;
+    opacity: 0.7;
+  }
+</style>

frontend/src/lib/components/Location.svelte

@@ -0,0 +1,67 @@
+<script lang="ts">
+  import type { LocationView } from "$lib/api/types";
+
+  interface Props {
+    location: LocationView;
+  }
+
+  let { location }: Props = $props();
+
+  const hasCoords = $derived(
+    location.latitude !== null && location.longitude !== null
+  );
+  const mapUrl = $derived(
+    hasCoords
+      ? `https://www.openstreetmap.org/?mlat=${location.latitude}&mlon=${location.longitude}#map=16/${location.latitude}/${location.longitude}`
+      : null
+  );
+  const title = $derived(location.title ?? "Location");
+</script>
+
+<svelte:element
+  this={mapUrl ? "a" : "div"}
+  class="Location"
+  href={mapUrl}
+  target={mapUrl ? "_blank" : undefined}
+  rel={mapUrl ? "noopener" : undefined}
+>
+  <span class="pin">📍</span>
+  <div class="info">
+    <div class="title">{title}</div>
+    {#if location.address}
+      <div class="address">{location.address}</div>
+    {/if}
+    {#if hasCoords}
+      <div class="coords">{location.latitude}, {location.longitude}</div>
+    {/if}
+  </div>
+</svelte:element>
+
+<style lang="scss">
+  .Location {
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+
+    min-width: 12rem;
+    margin-bottom: 0.25rem;
+
+    color: inherit;
+    text-decoration: none;
+  }
+
+  .pin {
+    font-size: 1.5rem;
+    line-height: 1;
+  }
+
+  .title {
+    font-weight: var(--font-weight-medium);
+  }
+
+  .address,
+  .coords {
+    font-size: 0.875rem;
+    color: var(--color-text-secondary);
+  }
+</style>

frontend/src/lib/components/LoginScreen.svelte

@@ -0,0 +1,124 @@
+<script lang="ts">
+  import { goto } from "$app/navigation";
+  import Button from "$lib/components/ui/Button.svelte";
+  import Icon from "$lib/components/ui/Icon.svelte";
+  import { accounts } from "$lib/stores/accounts.svelte";
+  import { auth } from "$lib/stores/auth.svelte";
+  import { toasts } from "$lib/stores/toasts.svelte";
+
+  let value = $state("");
+  let busy = $state(false);
+
+  async function submit(event: SubmitEvent) {
+    event.preventDefault();
+    if (!value.trim() || busy) {
+      return;
+    }
+    busy = true;
+    auth.login(value.trim());
+    try {
+      await accounts.load();
+      await goto("/app");
+    } catch {
+      toasts.error("Invalid token");
+    } finally {
+      busy = false;
+    }
+  }
+</script>
+
+<div class="login">
+  <form class="login-card" onsubmit={submit}>
+    <div class="logo">
+      <Icon name="lock" size="2.75rem" />
+    </div>
+    <h1>Beavergram</h1>
+    <p class="subtitle">Enter your access token to continue.</p>
+    <input
+      class="form-control"
+      type="password"
+      placeholder="Access token"
+      autocomplete="current-password"
+      bind:value
+    >
+    <Button type="submit" loading={busy} disabled={busy || !value.trim()}>
+      Log in
+    </Button>
+  </form>
+</div>
+
+<style lang="scss">
+  .login {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+
+    width: 100%;
+    height: 100%;
+    padding: 1.5rem;
+
+    background-color: var(--color-background-secondary);
+  }
+
+  .login-card {
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+
+    width: 100%;
+    max-width: 24rem;
+    padding: 2.5rem 2rem;
+    border-radius: var(--border-radius-modal);
+
+    background-color: var(--color-background);
+    box-shadow: 0 0.5rem 2rem var(--color-default-shadow);
+  }
+
+  .logo {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+
+    width: 6rem;
+    height: 6rem;
+    margin-bottom: 1.5rem;
+    border-radius: 50%;
+
+    color: var(--color-white);
+    background-image: linear-gradient(var(--color-primary), var(--color-primary-shade));
+  }
+
+  h1 {
+    margin: 0 0 0.5rem;
+    font-size: 1.5rem;
+    font-weight: var(--font-weight-medium);
+    color: var(--color-text);
+  }
+
+  .subtitle {
+    margin: 0 0 1.75rem;
+    font-size: 0.9375rem;
+    color: var(--color-text-secondary);
+    text-align: center;
+  }
+
+  .form-control {
+    width: 100%;
+    height: 3.25rem;
+    margin-bottom: 1.25rem;
+    padding: 0 1rem;
+    border: 1px solid var(--color-borders-input);
+    border-radius: var(--border-radius-default-small);
+
+    font-size: 1rem;
+    color: var(--color-text);
+
+    background-color: transparent;
+    outline: none;
+    transition: border-color 0.15s ease;
+
+    &:focus {
+      border-color: var(--color-primary);
+    }
+  }
+</style>

frontend/src/lib/components/MediaAlbum.svelte

@@ -0,0 +1,42 @@
+<script lang="ts">
+  import type { MediaRef } from "$lib/api/types";
+  import AlbumTile from "$lib/components/media/AlbumTile.svelte";
+
+  interface Props {
+    chatId: number;
+    media: MediaRef[];
+    onopen: (index: number) => void;
+  }
+
+  let { media, chatId, onopen }: Props = $props();
+
+  const columns = $derived.by(() => {
+    const count = media.length;
+    if (count === 2) {
+      return 2;
+    }
+    if (count === 4) {
+      return 2;
+    }
+    return 3;
+  });
+</script>
+
+<div class="MediaAlbum" style:--cols={columns}>
+  {#each media as item, index (item.id ?? index)}
+    <AlbumTile media={item} {chatId} onopen={() => onopen(index)} />
+  {/each}
+</div>
+
+<style lang="scss">
+  .MediaAlbum {
+    display: grid;
+    grid-template-columns: repeat(var(--cols), 1fr);
+    gap: 0.125rem;
+
+    overflow: hidden;
+    max-width: 20rem;
+    margin-bottom: 0.25rem;
+    border-radius: var(--border-radius-default-small);
+  }
+</style>

frontend/src/lib/components/MediaVersionThumb.svelte

@@ -0,0 +1,117 @@
+<script lang="ts">
+  import { type MediaResult, requestMediaVersion } from "$lib/api/client";
+  import { visualKind } from "$lib/api/media";
+  import type { MediaVersion } from "$lib/api/types";
+  import Icon from "$lib/components/ui/Icon.svelte";
+  import Spinner from "$lib/components/ui/Spinner.svelte";
+
+  interface Props {
+    version: MediaVersion;
+  }
+
+  let { version }: Props = $props();
+
+  let result = $state<MediaResult | null>(null);
+
+  const vk = $derived(visualKind(version.kind));
+
+  $effect(() => {
+    let active = true;
+    requestMediaVersion(version.id).then((value) => {
+      if (active) {
+        result = value;
+      }
+    });
+    return () => {
+      active = false;
+    };
+  });
+</script>
+
+<div class="thumb">
+  {#if result === null}
+    <div class="placeholder"><Spinner /></div>
+  {:else if result.state === "ready" && vk === "image"}
+    <a href={result.url} target="_blank" rel="noopener">
+      <img src={result.url} alt={version.kind}>
+    </a>
+  {:else if result.state === "ready" && vk === "video"}
+    <a href={result.url} target="_blank" rel="noopener">
+      <video src={result.url} muted preload="metadata"></video>
+      <span class="play"><Icon name="large-play" size="1.5rem" /></span>
+    </a>
+  {:else if result.state === "ready"}
+    <a class="file" href={result.url} target="_blank" rel="noopener">
+      <Icon name="document" size="1.125rem" />
+      <span>{version.kind}</span>
+    </a>
+  {:else}
+    <div class="placeholder missing">
+      <Icon name="no-download" size="1.25rem" />
+    </div>
+  {/if}
+</div>
+
+<style lang="scss">
+  .thumb {
+    flex-shrink: 0;
+  }
+
+  a {
+    position: relative;
+    display: block;
+    overflow: hidden;
+    border-radius: var(--border-radius-default-small);
+  }
+
+  img,
+  video {
+    display: block;
+    width: 7rem;
+    height: 7rem;
+    object-fit: cover;
+    background-color: var(--color-default-shadow);
+  }
+
+  .play {
+    position: absolute;
+    top: 50%;
+    left: 50%;
+    transform: translate(-50%, -50%);
+    color: var(--color-white);
+    filter: drop-shadow(0 1px 3px rgba(0, 0, 0, 0.5));
+  }
+
+  .file {
+    display: flex;
+    align-items: center;
+    gap: 0.375rem;
+
+    padding: 0.5rem 0.625rem;
+
+    font-size: 0.8125rem;
+    color: var(--color-primary);
+    text-decoration: none;
+
+    background-color: var(--color-primary-tint);
+  }
+
+  .placeholder {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+
+    width: 7rem;
+    height: 7rem;
+    border-radius: var(--border-radius-default-small);
+
+    color: var(--color-text-secondary);
+    background-color: var(--color-default-shadow);
+
+    &.missing {
+      width: auto;
+      height: auto;
+      padding: 0.75rem;
+    }
+  }
+</style>

frontend/src/lib/components/MediaViewer.svelte

@@ -0,0 +1,317 @@
+<script lang="ts">
+  import { Dialog } from "bits-ui";
+  import { untrack } from "svelte";
+  import { type MediaResult, requestMedia } from "$lib/api/client";
+  import { fetchMedia, getMessageMedia } from "$lib/api/endpoints";
+  import type { ViewerItem } from "$lib/api/media";
+  import Button from "$lib/components/ui/Button.svelte";
+  import Icon from "$lib/components/ui/Icon.svelte";
+  import Spinner from "$lib/components/ui/Spinner.svelte";
+  import { toasts } from "$lib/stores/toasts.svelte";
+
+  interface Props {
+    chatId: number;
+    index: number;
+    items: ViewerItem[];
+    open: boolean;
+  }
+
+  let {
+    open = $bindable(),
+    index = $bindable(),
+    chatId,
+    items,
+  }: Props = $props();
+
+  let kind = $state("");
+  let messageId = $state<number | null>(null);
+  let result = $state<MediaResult | null>(null);
+  let loading = $state(false);
+  let token = 0;
+
+  const mime = $derived(result?.state === "ready" ? (result.mime ?? "") : "");
+  const isImage = $derived(mime.startsWith("image/") || kind === "photo");
+  const isVideo = $derived(
+    mime.startsWith("video/") || kind === "video" || kind === "video_note"
+  );
+  const isAudio = $derived(
+    mime.startsWith("audio/") || kind === "voice" || kind === "audio"
+  );
+  const hasNav = $derived(items.length > 1);
+
+  function revoke() {
+    if (result?.state === "ready") {
+      URL.revokeObjectURL(result.url);
+    }
+  }
+
+  async function load(item: ViewerItem) {
+    revoke();
+    loading = true;
+    result = null;
+    kind = item.kind;
+    messageId = item.messageId;
+    const current = ++token;
+    try {
+      let mediaId = item.mediaId;
+      let downloaded = item.downloaded;
+      if (mediaId === null) {
+        const meta = await getMessageMedia(chatId, item.messageId);
+        mediaId = meta.id;
+        downloaded = meta.downloaded;
+        kind = meta.kind;
+      }
+      const next = downloaded
+        ? await requestMedia(mediaId)
+        : ({ state: "not-downloaded" } as MediaResult);
+      if (current === token) {
+        result = next;
+      }
+    } catch {
+      if (current === token) {
+        toasts.error("Failed to load media");
+      }
+    } finally {
+      if (current === token) {
+        loading = false;
+      }
+    }
+  }
+
+  async function queueFetch() {
+    if (messageId === null) {
+      return;
+    }
+    try {
+      await fetchMedia(chatId, messageId);
+      toasts.success("Download queued");
+    } catch {
+      toasts.error("Failed to queue download");
+    }
+  }
+
+  function step(delta: number) {
+    const next = index + delta;
+    if (next >= 0 && next < items.length) {
+      index = next;
+    }
+  }
+
+  function onkeydown(event: KeyboardEvent) {
+    if (!(open && hasNav)) {
+      return;
+    }
+    if (event.key === "ArrowLeft") {
+      step(-1);
+    } else if (event.key === "ArrowRight") {
+      step(1);
+    }
+  }
+
+  $effect(() => {
+    const item = items[index];
+    const isOpen = open;
+    untrack(() => {
+      if (isOpen && item) {
+        load(item);
+      }
+    });
+  });
+
+  $effect(() => {
+    if (!open) {
+      untrack(() => {
+        revoke();
+        result = null;
+      });
+    }
+  });
+</script>
+
+<svelte:window {onkeydown} />
+
+<Dialog.Root bind:open>
+  <Dialog.Portal>
+    <Dialog.Overlay class="media-overlay" />
+    <Dialog.Content class="media-content">
+      <Dialog.Title class="media-title">{kind || "Media"}</Dialog.Title>
+      <Dialog.Close class="media-close" aria-label="Close">
+        <Icon name="close" size="1.5rem" />
+      </Dialog.Close>
+      {#if hasNav}
+        <span class="media-counter">{index + 1} / {items.length}</span>
+      {/if}
+      <div class="media-body">
+        {#if loading}
+          <Spinner color="white" />
+        {:else if result?.state === "ready" && isImage}
+          <img class="media-image" src={result.url} alt={kind}>
+        {:else if result?.state === "ready" && isVideo}
+          <!-- svelte-ignore a11y_media_has_caption -->
+          <!-- biome-ignore lint/a11y/useMediaCaption: archived media has no captions -->
+          <video class="media-video" src={result.url} controls></video>
+        {:else if result?.state === "ready" && isAudio}
+          <!-- biome-ignore lint/a11y/useMediaCaption: archived media has no captions -->
+          <audio src={result.url} controls></audio>
+        {:else if result?.state === "ready"}
+          <a class="media-download" href={result.url} download>
+            <Icon name="download" />
+            Download file
+          </a>
+        {:else if result?.state === "not-downloaded"}
+          <div class="media-message">
+            <p>This media has not been downloaded yet.</p>
+            <Button variant="primary" fluid onclick={queueFetch}>
+              Fetch media
+            </Button>
+          </div>
+        {:else if result?.state === "missing"}
+          <p class="media-message">Media not found.</p>
+        {/if}
+      </div>
+      {#if hasNav}
+        <button
+          class="media-nav prev"
+          type="button"
+          aria-label="Previous"
+          disabled={index === 0}
+          onclick={() => step(-1)}
+        >
+          <Icon name="previous" size="1.75rem" />
+        </button>
+        <button
+          class="media-nav next"
+          type="button"
+          aria-label="Next"
+          disabled={index === items.length - 1}
+          onclick={() => step(1)}
+        >
+          <Icon name="next" size="1.75rem" />
+        </button>
+      {/if}
+    </Dialog.Content>
+  </Dialog.Portal>
+</Dialog.Root>
+
+<style lang="scss">
+  :global(.media-overlay) {
+    position: fixed;
+    inset: 0;
+    z-index: var(--z-media-viewer);
+    background-color: rgba(0, 0, 0, 0.9);
+  }
+
+  :global(.media-content) {
+    position: fixed;
+    inset: 0;
+    z-index: var(--z-media-viewer);
+
+    display: flex;
+    flex-direction: column;
+
+    outline: none;
+  }
+
+  :global(.media-title) {
+    position: absolute;
+    top: 1rem;
+    left: 1.25rem;
+
+    margin: 0;
+    font-size: 1rem;
+    font-weight: var(--font-weight-medium);
+    color: var(--color-white);
+    text-transform: capitalize;
+  }
+
+  .media-counter {
+    position: absolute;
+    top: 1rem;
+    left: 50%;
+    transform: translateX(-50%);
+
+    font-size: 0.9375rem;
+    color: var(--color-white);
+  }
+
+  :global(.media-close) {
+    cursor: pointer;
+    position: absolute;
+    top: 0.75rem;
+    right: 1rem;
+
+    display: flex;
+    align-items: center;
+    justify-content: center;
+
+    width: 2.5rem;
+    height: 2.5rem;
+    border: 0;
+    border-radius: 50%;
+
+    color: var(--color-white);
+    background-color: rgba(255, 255, 255, 0.1);
+  }
+
+  .media-body {
+    display: flex;
+    flex: 1;
+    align-items: center;
+    justify-content: center;
+    padding: 4rem 2rem;
+  }
+
+  .media-image,
+  .media-video {
+    max-width: 90vw;
+    max-height: 85vh;
+    border-radius: var(--border-radius-default);
+  }
+
+  .media-message {
+    max-width: 22rem;
+    color: var(--color-white);
+    text-align: center;
+  }
+
+  .media-download {
+    display: inline-flex;
+    align-items: center;
+    gap: 0.5rem;
+
+    color: var(--color-white);
+    text-decoration: none;
+  }
+
+  .media-nav {
+    cursor: pointer;
+    position: absolute;
+    top: 50%;
+    transform: translateY(-50%);
+
+    display: flex;
+    align-items: center;
+    justify-content: center;
+
+    width: 3rem;
+    height: 3rem;
+    border: 0;
+    border-radius: 50%;
+
+    color: var(--color-white);
+    background-color: rgba(255, 255, 255, 0.1);
+
+    &:disabled {
+      cursor: default;
+      opacity: 0.3;
+    }
+
+    &.prev {
+      left: 1.25rem;
+    }
+
+    &.next {
+      right: 1.25rem;
+    }
+  }
+</style>

frontend/src/lib/components/MessageBubble.svelte

@@ -0,0 +1,432 @@
+<script lang="ts">
+  import { goto } from "$app/navigation";
+  import type { MessageView } from "$lib/api/types";
+  import Contact from "$lib/components/Contact.svelte";
+  import EntityText from "$lib/components/EntityText.svelte";
+  import ForwardHeader from "$lib/components/ForwardHeader.svelte";
+  import InlineButtons from "$lib/components/InlineButtons.svelte";
+  import Location from "$lib/components/Location.svelte";
+  import MediaAlbum from "$lib/components/MediaAlbum.svelte";
+  import MessageMedia from "$lib/components/MessageMedia.svelte";
+  import MessageMeta from "$lib/components/MessageMeta.svelte";
+  import Poll from "$lib/components/Poll.svelte";
+  import Reactions from "$lib/components/Reactions.svelte";
+  import ReplyHeader from "$lib/components/ReplyHeader.svelte";
+  import Avatar from "$lib/components/ui/Avatar.svelte";
+  import ContextMenu from "$lib/components/ui/ContextMenu.svelte";
+  import ContextMenuItem from "$lib/components/ui/ContextMenuItem.svelte";
+  import Icon from "$lib/components/ui/Icon.svelte";
+  import WebPage from "$lib/components/WebPage.svelte";
+  import { accountName, peerColorIndex, peerName } from "$lib/format/peer";
+  import { accounts } from "$lib/stores/accounts.svelte";
+  import { peers } from "$lib/stores/peers.svelte";
+  import { toasts } from "$lib/stores/toasts.svelte";
+  import { ui } from "$lib/stores/ui.svelte";
+  import { appear } from "$lib/transitions/appear";
+
+  interface Props {
+    animate: boolean;
+    firstInGroup: boolean;
+    highlighted: boolean;
+    isGroupChat: boolean;
+    lastInGroup: boolean;
+    message: MessageView;
+    onjump: (messageId: number) => void;
+    onmedia: (index: number) => void;
+    onversions: () => void;
+    own: boolean;
+  }
+
+  let {
+    message,
+    own,
+    isGroupChat,
+    firstInGroup,
+    lastInGroup,
+    highlighted,
+    animate,
+    onjump,
+    onmedia,
+    onversions,
+  }: Props = $props();
+
+  const deleted = $derived(message.deleted_at !== null);
+  const hasText = $derived(Boolean(message.text));
+  const special = $derived(
+    Boolean(
+      message.web_page || message.poll || message.contact || message.location
+    )
+  );
+
+  const ownId = $derived(accounts.selected?.tg_user_id ?? null);
+  const sender = $derived(
+    message.sender_id === null ? undefined : peers.get(message.sender_id)
+  );
+  const senderName = $derived.by(() => {
+    if (own) {
+      return accounts.selected ? accountName(accounts.selected) : "You";
+    }
+    if (sender) {
+      return peerName(sender);
+    }
+    return message.sender_id === null ? "" : String(message.sender_id);
+  });
+  const colorIndex = $derived(peerColorIndex(message.sender_id ?? 0));
+  const showName = $derived(isGroupChat && !own && firstInGroup);
+
+  const avatarId = $derived(own ? ownId : message.sender_id);
+  const avatarHas = $derived(
+    own
+      ? ownId !== null && peers.get(ownId)?.has_avatar
+      : (sender?.has_avatar ?? false)
+  );
+
+  const hasCallbacks = $derived(
+    message.inline_buttons.some((row) =>
+      row.some((button) => button.kind === "callback" && button.data)
+    )
+  );
+  const linkCount = $derived.by(() => {
+    const count = message.entities.filter(
+      (entity) => entity.type === "url" || entity.type === "text_link"
+    ).length;
+    if (count > 0) {
+      return count;
+    }
+    return message.web_page ? 1 : 0;
+  });
+
+  function openReactions() {
+    ui.openMessagePanel("reactions", message.message_id);
+  }
+  function openCallbacks() {
+    ui.openMessagePanel("callbacks", message.message_id);
+  }
+  function openLinks() {
+    ui.openMessagePanel("links", message.message_id);
+  }
+  function openAnnotations() {
+    ui.openMessagePanel("annotations", message.message_id);
+  }
+  function jumpToReply() {
+    if (message.reply?.message_id != null) {
+      onjump(message.reply.message_id);
+    }
+  }
+  async function copyText() {
+    await navigator.clipboard.writeText(message.text ?? "");
+    toasts.success("Текст скопирован");
+  }
+  async function copyId() {
+    await navigator.clipboard.writeText(String(message.message_id));
+    toasts.success("ID скопирован");
+  }
+  function openSenderProfile() {
+    if (message.sender_id !== null) {
+      goto(`/app/${message.sender_id}`);
+      ui.openPanel("profile");
+    }
+  }
+</script>
+
+<ContextMenu>
+  {#snippet children({ props })}
+    <div
+      {...props}
+      class="Message"
+      class:own
+      class:deleted
+      class:highlighted
+      class:first-in-group={firstInGroup}
+      class:last-in-group={lastInGroup}
+      class:with-avatar={isGroupChat}
+      data-message-id={message.message_id}
+      in:appear={{ disabled: !animate }}
+    >
+      {#if isGroupChat}
+        <div class="avatar-slot">
+          {#if lastInGroup && avatarId !== null}
+            <Avatar
+              name={senderName}
+              colorKey={avatarId}
+              size={2.125}
+              avatar={{ kind: "peer", id: avatarId }}
+              hasAvatar={avatarHas}
+            />
+          {/if}
+        </div>
+      {/if}
+
+      <div class="message-content" class:has-appendix={lastInGroup}>
+        {#if showName}
+          <div class="sender-name peer-color-{colorIndex}">{senderName}</div>
+        {/if}
+        {#if message.forward}
+          <ForwardHeader forward={message.forward} />
+        {/if}
+        {#if message.reply}
+          <ReplyHeader reply={message.reply} {onjump} />
+        {/if}
+        {#if deleted}
+          <span class="deleted-tag">
+            <Icon name="delete" size="0.875rem" />
+            deleted
+          </span>
+        {/if}
+        {#if message.poll}
+          <Poll poll={message.poll} />
+        {/if}
+        {#if message.contact}
+          <Contact contact={message.contact} />
+        {/if}
+        {#if message.location}
+          <Location location={message.location} />
+        {/if}
+        {#if !special}
+          {#if message.media.length > 1}
+            <MediaAlbum
+              media={message.media}
+              chatId={message.chat_id}
+              onopen={onmedia}
+            />
+          {:else if message.has_media}
+            <MessageMedia {message} {own} onopen={() => onmedia(0)} />
+          {/if}
+        {/if}
+        {#if hasText}
+          <div class="text">
+            <EntityText
+              text={message.text ?? ""}
+              entities={message.entities}
+              {own}
+            />
+          </div>
+        {:else if !(message.has_media || deleted || special)}
+          <div class="text empty">(no text)</div>
+        {/if}
+        {#if message.web_page}
+          <WebPage {message} {own} {onmedia} />
+        {/if}
+        {#if message.reactions.length}
+          <Reactions
+            reactions={message.reactions}
+            {own}
+            onclick={openReactions}
+          />
+        {/if}
+        {#if linkCount > 0}
+          <button type="button" class="detail-chip" onclick={openLinks}>
+            <Icon name="link" size="0.875rem" />
+            {linkCount}
+            {linkCount === 1 ? "ссылка" : "ссылки"}
+          </button>
+        {/if}
+        <MessageMeta {message} {own} {onversions} />
+        {#if message.inline_buttons.length}
+          <InlineButtons rows={message.inline_buttons} />
+        {/if}
+        {#if hasCallbacks}
+          <button type="button" class="detail-chip" onclick={openCallbacks}>
+            <Icon name="bot-command" size="0.875rem" />
+            Callback-данные
+          </button>
+        {/if}
+        {#if lastInGroup}
+          <svg aria-hidden="true" class="svg-appendix" height="20" width="9">
+            <path
+              class="corner"
+              d="M3 17h6V0c-.193 2.84-.876 5.767-2.05 8.782-.904 2.325-2.446 4.485-4.625 6.48A1 1 0 003 17z"
+            />
+          </svg>
+        {/if}
+      </div>
+    </div>
+  {/snippet}
+  {#snippet menu()}
+    <ContextMenuItem icon="note" onselect={openAnnotations}
+      >Заметки</ContextMenuItem
+    >
+    {#if message.reactions.length}
+      <ContextMenuItem icon="heart" onselect={openReactions}
+        >Реакции</ContextMenuItem
+      >
+    {/if}
+    {#if linkCount > 0}
+      <ContextMenuItem icon="link" onselect={openLinks}>Ссылки</ContextMenuItem>
+    {/if}
+    {#if hasCallbacks}
+      <ContextMenuItem icon="bot-command" onselect={openCallbacks}
+        >Callback-данные</ContextMenuItem
+      >
+    {/if}
+    {#if message.edited_at}
+      <ContextMenuItem icon="edit" onselect={onversions}
+        >Версии</ContextMenuItem
+      >
+    {/if}
+    {#if message.reply?.message_id != null}
+      <ContextMenuItem icon="reply" onselect={jumpToReply}
+        >Перейти к ответу</ContextMenuItem
+      >
+    {/if}
+    {#if hasText}
+      <ContextMenuItem icon="copy" onselect={copyText}
+        >Копировать текст</ContextMenuItem
+      >
+    {/if}
+    <ContextMenuItem icon="hashtag" onselect={copyId}
+      >Копировать ID</ContextMenuItem
+    >
+    {#if isGroupChat && !own && message.sender_id !== null}
+      <ContextMenuItem icon="info" onselect={openSenderProfile}
+        >Профиль автора</ContextMenuItem
+      >
+    {/if}
+  {/snippet}
+</ContextMenu>
+
+<style lang="scss">
+  .Message {
+    --background-color: var(--color-background);
+    --meta-color: var(--color-text-meta);
+
+    position: relative;
+    transform-origin: bottom left;
+
+    display: flex;
+    align-items: flex-end;
+    gap: 0.4375rem;
+    margin-bottom: 0.125rem;
+
+    &.last-in-group {
+      margin-bottom: 0.5rem;
+    }
+
+    &.own {
+      --background-color: var(--color-background-own);
+      --meta-color: var(--color-message-meta-own);
+    }
+  }
+
+  .avatar-slot {
+    flex-shrink: 0;
+    width: 2.125rem;
+  }
+
+  .message-content {
+    position: relative;
+
+    max-width: min(30rem, 75%);
+    min-width: 3.5rem;
+    padding: 0.3125rem 0.5rem 0.375rem;
+    border-radius: var(--border-radius-messages);
+
+    font-size: 1rem;
+    line-height: 1.3125;
+    color: var(--color-text);
+
+    background-color: var(--background-color);
+    box-shadow: 0 1px 2px var(--color-default-shadow);
+  }
+
+  .Message.highlighted .message-content {
+    animation: highlight-flash 1.6s ease;
+  }
+
+  @keyframes highlight-flash {
+    0%,
+    60% {
+      background-color: var(--color-primary-opacity);
+    }
+
+    100% {
+      background-color: var(--background-color);
+    }
+  }
+
+  .Message:not(.first-in-group) .message-content {
+    border-top-left-radius: var(--border-radius-messages-small);
+  }
+
+  .Message:not(.last-in-group) .message-content {
+    border-bottom-left-radius: var(--border-radius-messages-small);
+  }
+
+  .Message.last-in-group .message-content.has-appendix {
+    border-bottom-left-radius: 0;
+  }
+
+  .sender-name {
+    overflow: hidden;
+    margin-bottom: 0.0625rem;
+
+    font-size: 0.875rem;
+    font-weight: var(--font-weight-medium);
+    text-overflow: ellipsis;
+    white-space: nowrap;
+  }
+
+  .text {
+    overflow-wrap: anywhere;
+    white-space: pre-wrap;
+
+    &.empty {
+      font-style: italic;
+      color: var(--color-text-secondary);
+    }
+  }
+
+  .deleted .text {
+    color: var(--color-text-secondary);
+    text-decoration: line-through;
+  }
+
+  .deleted-tag {
+    display: inline-flex;
+    align-items: center;
+    gap: 0.25rem;
+
+    margin-bottom: 0.25rem;
+
+    font-size: 0.75rem;
+    font-weight: var(--font-weight-medium);
+    color: var(--color-error);
+  }
+
+  .detail-chip {
+    display: inline-flex;
+    align-items: center;
+    gap: 0.25rem;
+    align-self: flex-start;
+
+    margin-top: 0.25rem;
+    padding: 0.125rem 0.5rem 0.125rem 0.375rem;
+    border: 0;
+    border-radius: 1rem;
+
+    font-family: inherit;
+    font-size: 0.75rem;
+    font-weight: var(--font-weight-medium);
+    color: var(--color-text-secondary);
+
+    cursor: pointer;
+    background-color: var(--color-message-reaction);
+
+    &:hover {
+      color: var(--color-primary);
+    }
+  }
+
+  .svg-appendix {
+    position: absolute;
+    bottom: -0.0625rem;
+    left: -0.5rem;
+
+    width: 9px;
+    height: 20px;
+  }
+
+  .svg-appendix .corner {
+    fill: var(--background-color);
+  }
+</style>

frontend/src/lib/components/MessageList.svelte

@@ -0,0 +1,613 @@
+<script lang="ts">
+  import { tick } from "svelte";
+  import { listMessages } from "$lib/api/endpoints";
+  import { type ViewerItem, viewerItemsFrom } from "$lib/api/media";
+  import type { LiveEvent, MessageView } from "$lib/api/types";
+  import ActionMessage from "$lib/components/ActionMessage.svelte";
+  import MediaViewer from "$lib/components/MediaViewer.svelte";
+  import MessageBubble from "$lib/components/MessageBubble.svelte";
+  import MessageVersions from "$lib/components/MessageVersions.svelte";
+  import PinnedBar from "$lib/components/PinnedBar.svelte";
+  import EmptyState from "$lib/components/ui/EmptyState.svelte";
+  import Icon from "$lib/components/ui/Icon.svelte";
+  import Spinner from "$lib/components/ui/Spinner.svelte";
+  import { formatDay } from "$lib/format/datetime";
+  import { accounts } from "$lib/stores/accounts.svelte";
+  import { chats } from "$lib/stores/chats.svelte";
+  import { events } from "$lib/stores/events.svelte";
+  import { peers } from "$lib/stores/peers.svelte";
+  import { toasts } from "$lib/stores/toasts.svelte";
+  import { ui } from "$lib/stores/ui.svelte";
+
+  interface Props {
+    chatId: number;
+  }
+
+  let { chatId }: Props = $props();
+
+  const skeletonBubbles = [42, 66, 28, 54, 38, 72, 46];
+
+  const PAGE = 60;
+  const SCROLL_THRESHOLD = 160;
+  const STICK_OFFSET = 9;
+  const IDLE_DELAY = 1500;
+
+  let messages = $state<MessageView[]>([]);
+  let loading = $state(true);
+  let loadingOlder = $state(false);
+  let loadingNewer = $state(false);
+  let hasMore = $state(true);
+  let hasNewer = $state(false);
+  let container = $state<HTMLDivElement | null>(null);
+  let suppressAppear = $state(false);
+  let scrolling = $state(false);
+  let stuckDay = $state<string | null>(null);
+  let idleTimer: ReturnType<typeof setTimeout> | null = null;
+
+  let mediaOpen = $state(false);
+  let mediaItems = $state<ViewerItem[]>([]);
+  let mediaIndex = $state(0);
+  let versionsOpen = $state(false);
+  let versionsMessageId = $state<number | null>(null);
+  let highlightId = $state<number | null>(null);
+  let highlightTimer: ReturnType<typeof setTimeout> | null = null;
+
+  const ownId = $derived(accounts.selected?.tg_user_id ?? null);
+  const isGroupChat = $derived(chatId < 0);
+
+  interface Row {
+    dayKey: string;
+    daySeparator: string | null;
+    firstInGroup: boolean;
+    lastInGroup: boolean;
+    message: MessageView;
+    own: boolean;
+  }
+
+  function dayKey(iso: string): string {
+    return new Date(iso).toDateString();
+  }
+
+  const rows = $derived.by<Row[]>(() => {
+    const out: Row[] = [];
+    for (let i = 0; i < messages.length; i++) {
+      const message = messages[i];
+      const prev = messages[i - 1];
+      const next = messages[i + 1];
+      const day = dayKey(message.date);
+      const samePrevDay = prev ? dayKey(prev.date) === day : false;
+      const sameNextDay = next ? dayKey(next.date) === day : false;
+      out.push({
+        message,
+        dayKey: day,
+        own: ownId !== null && message.sender_id === ownId,
+        firstInGroup:
+          !prev || prev.sender_id !== message.sender_id || !samePrevDay,
+        lastInGroup:
+          !next || next.sender_id !== message.sender_id || !sameNextDay,
+        daySeparator: samePrevDay ? null : formatDay(message.date),
+      });
+    }
+    return out;
+  });
+
+  function ensurePeers(items: MessageView[]) {
+    const ids = new Set<number>();
+    for (const message of items) {
+      if (message.sender_id !== null) {
+        ids.add(message.sender_id);
+      }
+      if (message.reply?.sender_id != null) {
+        ids.add(message.reply.sender_id);
+      }
+      if (message.forward?.from_id != null) {
+        ids.add(message.forward.from_id);
+      }
+      if (message.service?.member_ids) {
+        for (const id of message.service.member_ids) {
+          ids.add(id);
+        }
+      }
+    }
+    if (ownId !== null) {
+      ids.add(ownId);
+    }
+    peers.ensure(ids);
+  }
+
+  function jumpToMessage(messageId: number) {
+    const target = container?.querySelector<HTMLElement>(
+      `[data-message-id="${messageId}"]`
+    );
+    if (!target) {
+      toasts.error("Message not loaded");
+      return;
+    }
+    target.scrollIntoView({ behavior: "smooth", block: "center" });
+    highlightId = messageId;
+    if (highlightTimer) {
+      clearTimeout(highlightTimer);
+    }
+    highlightTimer = setTimeout(() => {
+      highlightId = null;
+    }, 1600);
+  }
+
+  function scrollToBottom() {
+    if (container) {
+      container.scrollTop = container.scrollHeight;
+    }
+  }
+
+  function updateStuck() {
+    if (!container) {
+      return;
+    }
+    const limit = container.getBoundingClientRect().top + STICK_OFFSET + 1;
+    const seps = container.querySelectorAll<HTMLElement>(".day-separator");
+    let day: string | null = null;
+    for (const sep of seps) {
+      if (sep.getBoundingClientRect().top <= limit) {
+        day = sep.dataset.day ?? null;
+      }
+    }
+    stuckDay = day;
+  }
+
+  async function loadInitial() {
+    loading = true;
+    hasMore = true;
+    hasNewer = false;
+    try {
+      const page = await listMessages(chatId, {
+        limit: PAGE,
+        offset: 0,
+        include_deleted: true,
+      });
+      messages = [...page].reverse();
+      hasMore = page.length > 0;
+      ensurePeers(messages);
+      await tick();
+      scrollToBottom();
+      updateStuck();
+    } catch {
+      toasts.error("Failed to load messages");
+    } finally {
+      loading = false;
+    }
+  }
+
+  async function loadOlder() {
+    if (
+      loadingOlder ||
+      !hasMore ||
+      container === null ||
+      messages.length === 0
+    ) {
+      return;
+    }
+    loadingOlder = true;
+    const el = container;
+    const prevHeight = el.scrollHeight;
+    const prevTop = el.scrollTop;
+    try {
+      const page = await listMessages(chatId, {
+        limit: PAGE,
+        before_id: messages[0].message_id,
+        include_deleted: true,
+      });
+      const known = new Set(messages.map((m) => m.message_id));
+      const fresh = page.filter((m) => !known.has(m.message_id));
+      hasMore = fresh.length > 0;
+      if (fresh.length > 0) {
+        suppressAppear = true;
+        messages = [...[...fresh].reverse(), ...messages];
+        ensurePeers(fresh);
+        await tick();
+        el.scrollTop = prevTop + (el.scrollHeight - prevHeight);
+      }
+    } finally {
+      loadingOlder = false;
+      suppressAppear = false;
+    }
+  }
+
+  async function loadNewer() {
+    if (loadingNewer || !hasNewer || messages.length === 0) {
+      return;
+    }
+    loadingNewer = true;
+    try {
+      const page = await listMessages(chatId, {
+        limit: PAGE,
+        after_id: messages.at(-1)?.message_id,
+        include_deleted: true,
+      });
+      const known = new Set(messages.map((m) => m.message_id));
+      const fresh = page.filter((m) => !known.has(m.message_id));
+      hasNewer = fresh.length > 0;
+      if (fresh.length > 0) {
+        suppressAppear = true;
+        messages = [...messages, ...fresh];
+        ensurePeers(fresh);
+        await tick();
+      }
+    } finally {
+      loadingNewer = false;
+      suppressAppear = false;
+    }
+  }
+
+  async function loadAround(messageId: number) {
+    suppressAppear = true;
+    try {
+      const [older, newer] = await Promise.all([
+        listMessages(chatId, {
+          limit: PAGE,
+          before_id: messageId + 1,
+          include_deleted: true,
+        }),
+        listMessages(chatId, {
+          limit: PAGE,
+          after_id: messageId,
+          include_deleted: true,
+        }),
+      ]);
+      messages = [...[...older].reverse(), ...newer];
+      hasMore = older.length > 0;
+      hasNewer = newer.length > 0;
+      ensurePeers(messages);
+      await tick();
+    } finally {
+      suppressAppear = false;
+    }
+  }
+
+  async function goToLatest() {
+    await loadInitial();
+  }
+
+  function onScroll() {
+    scrolling = true;
+    if (idleTimer) {
+      clearTimeout(idleTimer);
+    }
+    idleTimer = setTimeout(() => {
+      scrolling = false;
+    }, IDLE_DELAY);
+    updateStuck();
+    if (container && container.scrollTop < SCROLL_THRESHOLD) {
+      loadOlder();
+    }
+    if (hasNewer && isNearBottom()) {
+      loadNewer();
+    }
+  }
+
+  function openMedia(message: MessageView, index: number) {
+    mediaItems = viewerItemsFrom(message.message_id, message.media);
+    mediaIndex = index;
+    mediaOpen = true;
+  }
+
+  function openVersions(messageId: number) {
+    versionsMessageId = messageId;
+    versionsOpen = true;
+  }
+
+  function isNearBottom(): boolean {
+    if (!container) {
+      return true;
+    }
+    return (
+      container.scrollHeight - container.scrollTop - container.clientHeight <
+      SCROLL_THRESHOLD
+    );
+  }
+
+  function replaceMessage(message: MessageView) {
+    messages = messages.map((m) =>
+      m.message_id === message.message_id ? message : m
+    );
+  }
+
+  async function appendMessage(message: MessageView) {
+    if (messages.some((m) => m.message_id === message.message_id)) {
+      replaceMessage(message);
+      return;
+    }
+    if (hasNewer) {
+      return;
+    }
+    const stick = isNearBottom();
+    messages = [...messages, message];
+    ensurePeers([message]);
+    if (stick) {
+      await tick();
+      scrollToBottom();
+    }
+  }
+
+  function applyDelete(ids: number[]) {
+    const now = new Date().toISOString();
+    messages = messages.map((m) =>
+      ids.includes(m.message_id) && m.deleted_at === null
+        ? { ...m, deleted_at: now }
+        : m
+    );
+  }
+
+  function applyReceipt(readUpTo: number) {
+    if (ownId === null) {
+      return;
+    }
+    messages = messages.map((m) =>
+      m.sender_id === ownId && m.message_id <= readUpTo && !m.read
+        ? { ...m, read: true }
+        : m
+    );
+  }
+
+  function applyLiveEvent(event: LiveEvent) {
+    if (event.type === "message" && event.message.chat_id === chatId) {
+      appendMessage(event.message);
+    } else if (
+      (event.type === "edit" || event.type === "reaction") &&
+      event.message.chat_id === chatId
+    ) {
+      replaceMessage(event.message);
+    } else if (
+      event.type === "delete" &&
+      (event.chat_id === null || event.chat_id === chatId)
+    ) {
+      applyDelete(event.message_ids);
+    } else if (event.type === "receipt" && event.chat_id === chatId) {
+      applyReceipt(event.read_up_to);
+    }
+  }
+
+  async function resyncTail() {
+    if (messages.length === 0 || hasNewer) {
+      return;
+    }
+    const page = await listMessages(chatId, {
+      limit: PAGE,
+      offset: 0,
+      include_deleted: true,
+    });
+    const fresh = [...page].reverse();
+    const known = new Map(messages.map((m) => [m.message_id, m]));
+    const maxId = messages.reduce((acc, m) => Math.max(acc, m.message_id), 0);
+    const stick = isNearBottom();
+    const appended: MessageView[] = [];
+    for (const message of fresh) {
+      if (known.has(message.message_id)) {
+        known.set(message.message_id, message);
+      } else if (message.message_id > maxId) {
+        appended.push(message);
+      }
+    }
+    messages = [
+      ...messages.map((m) => known.get(m.message_id) ?? m),
+      ...appended,
+    ];
+    ensurePeers(fresh);
+    if (appended.length > 0 && stick) {
+      await tick();
+      scrollToBottom();
+    }
+  }
+
+  async function jumpToTarget(messageId: number) {
+    if (!messages.some((m) => m.message_id === messageId)) {
+      await loadAround(messageId);
+    }
+    await tick();
+    jumpToMessage(messageId);
+  }
+
+  $effect(() => {
+    const target = ui.jumpTarget;
+    if (target === null || target.chatId !== chatId || loading) {
+      return;
+    }
+    ui.clearJump();
+    jumpToTarget(target.messageId);
+  });
+
+  $effect(() => {
+    const unsub = events.subscribe(applyLiveEvent);
+    const unsubReconnect = events.onReconnect(resyncTail);
+    return () => {
+      unsub();
+      unsubReconnect();
+    };
+  });
+
+  $effect(() => {
+    const deps = {
+      account: accounts.selectedId,
+      revision: chats.revision,
+    };
+    if (deps.account === null) {
+      return;
+    }
+    loadInitial();
+  });
+</script>
+
+<div class="message-pane">
+  <PinnedBar {chatId} onjump={jumpToMessage} />
+  <div
+    bind:this={container}
+    class="message-list custom-scroll"
+    onscroll={onScroll}
+  >
+    {#if loading && messages.length === 0}
+      <div class="messages-container">
+        {#each skeletonBubbles as width, index (index)}
+          <div class="bubble-skeleton skeleton" style:width="{width}%"></div>
+        {/each}
+      </div>
+    {:else if rows.length === 0}
+      <EmptyState
+        title="No messages"
+        description="This chat has no archived messages"
+      />
+    {:else}
+      <div class="messages-container">
+        {#if loadingOlder}
+          <div class="loading-older"><Spinner /></div>
+        {/if}
+        {#each rows as row (row.message.message_id)}
+          {#if row.daySeparator}
+            <div
+              class="day-separator"
+              class:idle={!scrolling && row.dayKey === stuckDay}
+              data-day={row.dayKey}
+            >
+              <span>{row.daySeparator}</span>
+            </div>
+          {/if}
+          {#if row.message.service}
+            <ActionMessage message={row.message} onjump={jumpToMessage} />
+          {:else}
+            <MessageBubble
+              message={row.message}
+              own={row.own}
+              {isGroupChat}
+              firstInGroup={row.firstInGroup}
+              lastInGroup={row.lastInGroup}
+              highlighted={highlightId === row.message.message_id}
+              animate={!suppressAppear}
+              onjump={jumpToMessage}
+              onmedia={(index) => openMedia(row.message, index)}
+              onversions={() => openVersions(row.message.message_id)}
+            />
+          {/if}
+        {/each}
+        {#if loadingNewer}
+          <div class="loading-older"><Spinner /></div>
+        {/if}
+      </div>
+    {/if}
+  </div>
+  {#if hasNewer}
+    <button
+      type="button"
+      class="to-latest"
+      onclick={goToLatest}
+      aria-label="К последним сообщениям"
+    >
+      <Icon name="arrow-down" />
+    </button>
+  {/if}
+</div>
+
+<MediaViewer
+  bind:open={mediaOpen}
+  bind:index={mediaIndex}
+  {chatId}
+  items={mediaItems}
+/>
+<MessageVersions
+  bind:open={versionsOpen}
+  {chatId}
+  messageId={versionsMessageId}
+/>
+
+<style lang="scss">
+  .message-pane {
+    position: relative;
+    display: flex;
+    flex-direction: column;
+    height: 100%;
+  }
+
+  .to-latest {
+    position: absolute;
+    right: 1.25rem;
+    bottom: 1.25rem;
+    z-index: var(--z-sticky-date);
+
+    display: flex;
+    align-items: center;
+    justify-content: center;
+
+    width: 3rem;
+    height: 3rem;
+    border: 0;
+    border-radius: 50%;
+
+    color: var(--color-text-secondary);
+    cursor: pointer;
+    background-color: var(--color-background);
+    box-shadow: 0 2px 8px rgb(0 0 0 / 16%);
+
+    &:hover {
+      color: var(--color-text);
+    }
+  }
+
+  .message-list {
+    overflow-y: auto;
+    flex: 1;
+    min-height: 0;
+  }
+
+  .messages-container {
+    display: flex;
+    flex-direction: column;
+    justify-content: flex-end;
+
+    min-height: 100%;
+    padding: 1rem max(1rem, calc((100% - var(--messages-container-width)) / 2));
+  }
+
+  .loading-older {
+    display: flex;
+    justify-content: center;
+    padding: 0.5rem 0;
+  }
+
+  .bubble-skeleton {
+    align-self: flex-start;
+
+    height: 2.25rem;
+    margin-bottom: 0.5rem;
+    border-radius: var(--border-radius-messages);
+
+    &:last-child {
+      margin-bottom: 0;
+    }
+  }
+
+  .day-separator {
+    pointer-events: none;
+
+    position: sticky;
+    top: 0.5625rem;
+    z-index: var(--z-sticky-date);
+
+    display: flex;
+    justify-content: center;
+    margin: 0.75rem 0;
+
+    span {
+      padding: 0.25rem 0.75rem;
+      border-radius: 1rem;
+
+      font-size: 0.8125rem;
+      font-weight: var(--font-weight-medium);
+      color: var(--color-white);
+
+      background-color: var(--color-default-shadow);
+      backdrop-filter: blur(8px);
+      transition: opacity 0.3s ease;
+    }
+
+    &.idle span {
+      opacity: 0;
+    }
+  }
+</style>

frontend/src/lib/components/MessageMedia.svelte

@@ -0,0 +1,321 @@
+<script lang="ts">
+  import { visible } from "$lib/actions/visible";
+  import { fetchMedia } from "$lib/api/endpoints";
+  import {
+    type InlineMedia,
+    loadInlineMedia,
+    visualKind,
+  } from "$lib/api/media";
+  import type { MessageView } from "$lib/api/types";
+  import AudioFile from "$lib/components/media/AudioFile.svelte";
+  import TgsSticker from "$lib/components/media/TgsSticker.svelte";
+  import VideoNote from "$lib/components/media/VideoNote.svelte";
+  import VoiceMessage from "$lib/components/media/VoiceMessage.svelte";
+  import ContextMenu from "$lib/components/ui/ContextMenu.svelte";
+  import ContextMenuItem from "$lib/components/ui/ContextMenuItem.svelte";
+  import Icon from "$lib/components/ui/Icon.svelte";
+  import Spinner from "$lib/components/ui/Spinner.svelte";
+  import { toasts } from "$lib/stores/toasts.svelte";
+  import { ui } from "$lib/stores/ui.svelte";
+
+  interface Props {
+    message: MessageView;
+    onopen: () => void;
+    own: boolean;
+  }
+
+  let { message, onopen, own }: Props = $props();
+
+  const POLL_TRIES = 5;
+  const POLL_DELAY = 3000;
+
+  let loaded = $state(false);
+  let media = $state<InlineMedia | null>(null);
+  let queuing = $state(false);
+
+  const ready = $derived(media?.state === "ready" ? media : null);
+  const kind = $derived(ready?.kind ?? "");
+  const mime = $derived(ready?.mime ?? "");
+  const isImage = $derived(kind === "photo");
+  const isStaticSticker = $derived(
+    kind === "sticker" && mime.startsWith("image/")
+  );
+  const isVideoSticker = $derived(
+    kind === "sticker" && mime.startsWith("video/")
+  );
+  const isTgsSticker = $derived(
+    kind === "sticker" && mime === "application/x-tgsticker"
+  );
+  const isAnimation = $derived(kind === "animation" || kind === "gif");
+  const isThumbVideo = $derived(kind === "video");
+
+  const vk = $derived(
+    media && media.state !== "missing" ? visualKind(media.kind) : "other"
+  );
+  const label = $derived(
+    media && media.state !== "missing" ? media.kind : "media"
+  );
+
+  function delay(ms: number): Promise<void> {
+    return new Promise((resolve) => {
+      setTimeout(resolve, ms);
+    });
+  }
+
+  async function start() {
+    media = await loadInlineMedia(message.chat_id, message.message_id);
+    loaded = true;
+  }
+
+  async function poll() {
+    for (let i = 0; i < POLL_TRIES; i++) {
+      await delay(POLL_DELAY);
+      const next = await loadInlineMedia(message.chat_id, message.message_id);
+      if (next.state === "ready") {
+        media = next;
+        return;
+      }
+    }
+  }
+
+  async function queue() {
+    if (queuing) {
+      return;
+    }
+    queuing = true;
+    try {
+      await fetchMedia(message.chat_id, message.message_id);
+      toasts.success("Download queued");
+      poll();
+    } catch {
+      toasts.error("Failed to queue download");
+    } finally {
+      queuing = false;
+    }
+  }
+</script>
+
+<ContextMenu>
+  {#snippet children({ props })}
+    <div {...props} class="message-media" use:visible={start}>
+      {#if message.is_self_destruct}
+        <button class="media-chip self-destruct" onclick={onopen} type="button">
+          <Icon name="timer" size="1.25rem" />
+          <span>Self-destruct media</span>
+        </button>
+      {:else if !loaded}
+        <div class="media-skeleton"><Spinner /></div>
+      {:else if ready && kind === "voice"}
+        <VoiceMessage url={ready.url} transcript={ready.transcript} {own} />
+      {:else if ready && kind === "video_note"}
+        <VideoNote url={ready.url} transcript={ready.transcript} />
+      {:else if ready && kind === "audio"}
+        <AudioFile url={ready.url} title={ready.mime ?? "Audio"} {own} />
+      {:else if ready && isImage}
+        <button class="media-thumb" onclick={onopen} type="button">
+          <img src={ready.url} alt="attachment">
+        </button>
+      {:else if ready && isStaticSticker}
+        <button class="media-sticker" onclick={onopen} type="button">
+          <img src={ready.url} alt="sticker">
+        </button>
+      {:else if ready && isVideoSticker}
+        <video
+          class="media-sticker-video"
+          src={ready.url}
+          autoplay
+          loop
+          muted
+          playsinline
+        ></video>
+      {:else if ready && isTgsSticker}
+        <TgsSticker url={ready.url} />
+      {:else if ready && isAnimation}
+        <button class="media-thumb" onclick={onopen} type="button">
+          <video src={ready.url} autoplay loop muted playsinline></video>
+          <span class="gif-badge">GIF</span>
+        </button>
+      {:else if ready && isThumbVideo}
+        <button class="media-thumb" onclick={onopen} type="button">
+          <video src={ready.url} muted preload="metadata"></video>
+          <span class="play"><Icon name="large-play" size="2.5rem" /></span>
+        </button>
+      {:else if ready}
+        <button class="media-chip" onclick={onopen} type="button">
+          <Icon name="document" size="1.25rem" />
+          <span>{label}</span>
+        </button>
+      {:else if media?.state === "not-downloaded" && vk !== "other"}
+        <button class="media-placeholder" onclick={queue} type="button">
+          <Icon name={queuing ? "timer" : "download"} size="1.5rem" />
+          <span>{vk === "video" ? "Video" : "Photo"}</span>
+          <small>{queuing ? "Queued" : "Tap to download"}</small>
+        </button>
+      {:else if media?.state === "not-downloaded"}
+        <button class="media-chip" onclick={queue} type="button">
+          <Icon name={queuing ? "timer" : "download"} size="1.25rem" />
+          <span>{queuing ? "Queued" : `Download ${label}`}</span>
+        </button>
+      {:else}
+        <button class="media-chip" onclick={onopen} type="button">
+          <Icon name="photo" size="1.25rem" />
+          <span>Media</span>
+        </button>
+      {/if}
+    </div>
+  {/snippet}
+  {#snippet menu()}
+    <ContextMenuItem icon="open-in-new-tab" onselect={onopen}
+      >Открыть</ContextMenuItem
+    >
+    <ContextMenuItem
+      icon="recent"
+      onselect={() => ui.openMessagePanel("versions", message.message_id)}
+      >Версии медиа</ContextMenuItem
+    >
+    <ContextMenuItem icon="download" onselect={queue}>Скачать</ContextMenuItem>
+  {/snippet}
+</ContextMenu>
+
+<style lang="scss">
+  .message-media {
+    margin-bottom: 0.25rem;
+  }
+
+  .media-thumb {
+    cursor: pointer;
+    position: relative;
+
+    display: block;
+    overflow: hidden;
+
+    max-width: 100%;
+    padding: 0;
+    border: 0;
+    border-radius: var(--border-radius-default-small);
+
+    background-color: var(--color-default-shadow);
+
+    img,
+    video {
+      display: block;
+
+      width: 100%;
+      max-width: 20rem;
+      max-height: 20rem;
+
+      object-fit: cover;
+    }
+  }
+
+  .media-sticker {
+    cursor: pointer;
+    display: block;
+
+    padding: 0;
+    border: 0;
+
+    background: transparent;
+
+    img {
+      display: block;
+      width: 12rem;
+      height: 12rem;
+      object-fit: contain;
+    }
+  }
+
+  .media-sticker-video {
+    display: block;
+    width: 12rem;
+    height: 12rem;
+    object-fit: contain;
+  }
+
+  .gif-badge {
+    position: absolute;
+    top: 0.375rem;
+    left: 0.375rem;
+
+    padding: 0.0625rem 0.3125rem;
+    border-radius: 0.5rem;
+
+    font-size: 0.6875rem;
+    font-weight: var(--font-weight-medium);
+    color: var(--color-white);
+
+    background-color: rgba(0, 0, 0, 0.45);
+  }
+
+  .play {
+    position: absolute;
+    top: 50%;
+    left: 50%;
+    transform: translate(-50%, -50%);
+
+    display: flex;
+    color: var(--color-white);
+
+    filter: drop-shadow(0 1px 4px rgba(0, 0, 0, 0.5));
+  }
+
+  .media-skeleton {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+
+    width: 12rem;
+    height: 9rem;
+    border-radius: var(--border-radius-default-small);
+
+    background-color: var(--color-default-shadow);
+  }
+
+  .media-placeholder {
+    cursor: pointer;
+
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    justify-content: center;
+    gap: 0.25rem;
+
+    width: 12rem;
+    height: 9rem;
+    border: 0;
+    border-radius: var(--border-radius-default-small);
+
+    color: var(--color-primary);
+    text-align: center;
+
+    background-color: var(--color-primary-tint);
+
+    small {
+      font-size: 0.75rem;
+      color: var(--color-text-secondary);
+    }
+  }
+
+  .media-chip {
+    cursor: pointer;
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+
+    width: 100%;
+    padding: 0.5rem 0.625rem;
+    border: 0;
+    border-radius: var(--border-radius-default-small);
+
+    font-size: 0.9375rem;
+    color: var(--color-primary);
+    text-align: start;
+
+    background-color: var(--color-primary-tint);
+
+    &.self-destruct {
+      color: var(--color-orange);
+      background-color: var(--color-light-coral);
+    }
+  }
+</style>

frontend/src/lib/components/MessageMeta.svelte

@@ -0,0 +1,64 @@
+<script lang="ts">
+  import type { MessageView } from "$lib/api/types";
+  import Icon from "$lib/components/ui/Icon.svelte";
+  import { formatTime } from "$lib/format/datetime";
+
+  interface Props {
+    message: MessageView;
+    onversions?: () => void;
+    own?: boolean;
+  }
+
+  let { message, onversions, own = false }: Props = $props();
+</script>
+
+<span class="MessageMeta">
+  {#if message.edited_at}
+    <button
+      type="button"
+      class="edited"
+      title="View edit history"
+      onclick={onversions}
+    >
+      edited
+    </button>
+  {/if}
+  <span class="time">{formatTime(message.date)}</span>
+  {#if own}
+    <Icon
+      class="ticks"
+      name={message.read ? "message-read" : "check"}
+      size="1rem"
+    />
+  {/if}
+</span>
+
+<style lang="scss">
+  .MessageMeta {
+    display: inline-flex;
+    align-items: center;
+    gap: 0.25rem;
+
+    float: right;
+    margin-top: 0.125rem;
+    margin-inline-start: 0.5rem;
+
+    font-size: 0.75rem;
+    color: var(--meta-color, var(--color-text-meta));
+    user-select: none;
+  }
+
+  .time {
+    white-space: nowrap;
+  }
+
+  .edited {
+    cursor: pointer;
+    padding: 0;
+    border: 0;
+    font-size: 0.75rem;
+    font-style: italic;
+    color: inherit;
+    background: transparent;
+  }
+</style>

frontend/src/lib/components/MessageVersions.svelte

@@ -0,0 +1,212 @@
+<script lang="ts">
+  import { Dialog } from "bits-ui";
+  import { getMediaVersions, listMessageVersions } from "$lib/api/endpoints";
+  import type { MediaVersion, MessageVersion } from "$lib/api/types";
+  import MediaVersionThumb from "$lib/components/MediaVersionThumb.svelte";
+  import Icon from "$lib/components/ui/Icon.svelte";
+  import Spinner from "$lib/components/ui/Spinner.svelte";
+  import { formatFull } from "$lib/format/datetime";
+  import { toasts } from "$lib/stores/toasts.svelte";
+
+  interface Props {
+    chatId: number;
+    messageId: number | null;
+    open: boolean;
+  }
+
+  let { open = $bindable(), chatId, messageId }: Props = $props();
+
+  let versions = $state<MessageVersion[]>([]);
+  let mediaVersions = $state<MediaVersion[]>([]);
+  let loading = $state(false);
+
+  $effect(() => {
+    if (open && messageId !== null) {
+      loading = true;
+      mediaVersions = [];
+      const id = messageId;
+      Promise.all([
+        listMessageVersions(chatId, id),
+        getMediaVersions(chatId, id),
+      ])
+        .then(([text, media]) => {
+          versions = text;
+          mediaVersions = media;
+        })
+        .catch(() => toasts.error("Failed to load edit history"))
+        .finally(() => {
+          loading = false;
+        });
+    }
+  });
+</script>
+
+<Dialog.Root bind:open>
+  <Dialog.Portal>
+    <Dialog.Overlay class="dialog-overlay" />
+    <Dialog.Content class="dialog-content">
+      <header class="dialog-head">
+        <Dialog.Title class="dialog-title">Edit history</Dialog.Title>
+        <Dialog.Close class="dialog-close" aria-label="Close">
+          <Icon name="close" size="1.25rem" />
+        </Dialog.Close>
+      </header>
+      <div class="versions">
+        {#if loading}
+          <div class="centered"><Spinner /></div>
+        {:else if versions.length === 0 && mediaVersions.length === 0}
+          <p class="empty">No versions recorded.</p>
+        {:else}
+          {#if mediaVersions.length > 0}
+            <div class="media-versions">
+              <span class="media-label">Media versions</span>
+              <div class="media-strip">
+                {#each mediaVersions as media (media.id)}
+                  <MediaVersionThumb version={media} />
+                {/each}
+              </div>
+            </div>
+          {/if}
+          {#each versions as version, index (version.observed_at)}
+            <div class="version">
+              <div class="version-meta">
+                <span class="version-label">Version {index + 1}</span>
+                <span class="version-date"
+                  >{formatFull(version.observed_at)}</span
+                >
+              </div>
+              <div class="version-text">{version.text ?? "(no text)"}</div>
+            </div>
+          {/each}
+        {/if}
+      </div>
+    </Dialog.Content>
+  </Dialog.Portal>
+</Dialog.Root>
+
+<style lang="scss">
+  :global(.dialog-overlay) {
+    position: fixed;
+    inset: 0;
+    z-index: var(--z-modal);
+    background-color: rgba(0, 0, 0, 0.5);
+  }
+
+  :global(.dialog-content) {
+    position: fixed;
+    z-index: var(--z-modal);
+    top: 50%;
+    left: 50%;
+    transform: translate(-50%, -50%);
+
+    display: flex;
+    flex-direction: column;
+
+    width: min(32rem, 92vw);
+    max-height: 80vh;
+    border-radius: var(--border-radius-default);
+
+    background-color: var(--color-background);
+    box-shadow: 0 0.5rem 2rem var(--color-default-shadow);
+    outline: none;
+  }
+
+  .dialog-head {
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+
+    padding: 1rem 1.25rem;
+    border-bottom: 1px solid var(--color-borders);
+  }
+
+  :global(.dialog-title) {
+    margin: 0;
+    font-size: 1.125rem;
+    font-weight: var(--font-weight-medium);
+  }
+
+  :global(.dialog-close) {
+    cursor: pointer;
+    display: flex;
+    padding: 0.375rem;
+    border: 0;
+    border-radius: 50%;
+    color: var(--color-text-secondary);
+    background-color: transparent;
+
+    &:hover {
+      background-color: var(--color-chat-hover);
+    }
+  }
+
+  .versions {
+    overflow-y: auto;
+    padding: 0.75rem 1.25rem 1.25rem;
+  }
+
+  .media-versions {
+    padding-bottom: 0.75rem;
+    margin-bottom: 0.25rem;
+    border-bottom: 1px solid var(--color-borders);
+  }
+
+  .media-label {
+    display: block;
+    margin-bottom: 0.5rem;
+
+    font-size: 0.8125rem;
+    font-weight: var(--font-weight-medium);
+    color: var(--color-text-secondary);
+  }
+
+  .media-strip {
+    display: flex;
+    flex-wrap: wrap;
+    gap: 0.5rem;
+  }
+
+  .version {
+    padding: 0.75rem 0;
+    border-bottom: 1px solid var(--color-borders);
+
+    &:last-child {
+      border-bottom: 0;
+    }
+  }
+
+  .version-meta {
+    display: flex;
+    align-items: baseline;
+    justify-content: space-between;
+    margin-bottom: 0.25rem;
+  }
+
+  .version-label {
+    font-size: 0.8125rem;
+    font-weight: var(--font-weight-medium);
+    color: var(--color-primary);
+  }
+
+  .version-date {
+    font-size: 0.75rem;
+    color: var(--color-text-secondary);
+  }
+
+  .version-text {
+    white-space: pre-wrap;
+    overflow-wrap: anywhere;
+  }
+
+  .centered {
+    display: flex;
+    justify-content: center;
+    padding: 2rem 0;
+  }
+
+  .empty {
+    padding: 1rem 0;
+    color: var(--color-text-secondary);
+    text-align: center;
+  }
+</style>

frontend/src/lib/components/PinnedBar.svelte

@@ -0,0 +1,110 @@
+<script lang="ts">
+  import { getPinned } from "$lib/api/endpoints";
+  import type { PinnedView } from "$lib/api/types";
+  import Icon from "$lib/components/ui/Icon.svelte";
+  import { mediaKindLabel } from "$lib/format/media";
+  import { accounts } from "$lib/stores/accounts.svelte";
+
+  interface Props {
+    chatId: number;
+    onjump: (messageId: number) => void;
+  }
+
+  let { chatId, onjump }: Props = $props();
+
+  let pinned = $state<PinnedView | null>(null);
+
+  const preview = $derived(
+    pinned
+      ? (pinned.text ??
+          (pinned.media_kind
+            ? mediaKindLabel(pinned.media_kind)
+            : "Pinned message"))
+      : ""
+  );
+
+  $effect(() => {
+    const chat = chatId;
+    const account = accounts.selectedId;
+    if (account === null) {
+      return;
+    }
+    pinned = null;
+    let active = true;
+    getPinned(chat)
+      .then((result) => {
+        if (active) {
+          pinned = result;
+        }
+      })
+      .catch(() => {
+        if (active) {
+          pinned = null;
+        }
+      });
+    return () => {
+      active = false;
+    };
+  });
+</script>
+
+{#if pinned}
+  <button
+    type="button"
+    class="PinnedBar"
+    onclick={() => pinned && onjump(pinned.message_id)}
+  >
+    <Icon name="pin" size="1.125rem" />
+    <span class="body">
+      <span class="label">Pinned message</span>
+      <span class="preview">{preview}</span>
+    </span>
+  </button>
+{/if}
+
+<style lang="scss">
+  .PinnedBar {
+    display: flex;
+    align-items: center;
+    gap: 0.625rem;
+    width: 100%;
+    padding: 0.5rem 1rem;
+
+    text-align: start;
+    color: var(--color-text);
+
+    background-color: var(--color-background);
+    border: 0;
+    border-bottom: 1px solid var(--color-borders);
+    cursor: pointer;
+
+    :global(.icon) {
+      flex-shrink: 0;
+      color: var(--color-primary);
+    }
+
+    &:hover {
+      background-color: var(--color-background-hover, var(--color-background));
+    }
+  }
+
+  .body {
+    display: flex;
+    flex-direction: column;
+    min-width: 0;
+  }
+
+  .label {
+    font-size: 0.8125rem;
+    font-weight: var(--font-weight-medium);
+    color: var(--color-primary);
+  }
+
+  .preview {
+    overflow: hidden;
+    font-size: 0.875rem;
+    color: var(--color-text-secondary);
+    text-overflow: ellipsis;
+    white-space: nowrap;
+  }
+</style>

frontend/src/lib/components/Poll.svelte

@@ -0,0 +1,90 @@
+<script lang="ts">
+  import type { PollView } from "$lib/api/types";
+
+  interface Props {
+    poll: PollView;
+  }
+
+  let { poll }: Props = $props();
+
+  const kindLabel = $derived(poll.quiz ? "Quiz" : "Poll");
+  const visibility = $derived(poll.anonymous ? "Anonymous" : "Public");
+</script>
+
+<div class="Poll">
+  <div class="question">{poll.question}</div>
+  <div class="meta">
+    {kindLabel}
+    · {visibility}{poll.closed ? " · Closed" : ""}
+  </div>
+  {#each poll.options as option, index (index)}
+    <div class="option" class:correct={option.correct}>
+      <div class="head">
+        <span class="text">{option.text}</span>
+        <span class="pct">{option.vote_percentage}%</span>
+      </div>
+      <div class="bar">
+        <div class="fill" style="width: {option.vote_percentage}%;"></div>
+      </div>
+    </div>
+  {/each}
+  <div class="footer">{poll.total_voter_count} votes</div>
+</div>
+
+<style lang="scss">
+  .Poll {
+    min-width: 16rem;
+    margin-bottom: 0.25rem;
+  }
+
+  .question {
+    font-weight: var(--font-weight-medium);
+  }
+
+  .meta {
+    margin-bottom: 0.5rem;
+    font-size: 0.8125rem;
+    color: var(--color-text-secondary);
+  }
+
+  .option {
+    margin-bottom: 0.375rem;
+  }
+
+  .head {
+    display: flex;
+    justify-content: space-between;
+    gap: 0.5rem;
+    font-size: 0.9375rem;
+  }
+
+  .pct {
+    flex-shrink: 0;
+    font-variant-numeric: tabular-nums;
+    color: var(--color-text-secondary);
+  }
+
+  .bar {
+    overflow: hidden;
+    height: 0.25rem;
+    margin-top: 0.1875rem;
+    border-radius: 0.25rem;
+    background-color: var(--color-message-reaction);
+  }
+
+  .fill {
+    height: 100%;
+    border-radius: 0.25rem;
+    background-color: var(--color-primary);
+  }
+
+  .correct .fill {
+    background-color: var(--color-text-green);
+  }
+
+  .footer {
+    margin-top: 0.25rem;
+    font-size: 0.8125rem;
+    color: var(--color-text-secondary);
+  }
+</style>

frontend/src/lib/components/Reactions.svelte

@@ -0,0 +1,77 @@
+<script lang="ts">
+  import type { ReactionCount } from "$lib/api/types";
+  import CustomEmoji from "$lib/components/CustomEmoji.svelte";
+
+  interface Props {
+    onclick?: () => void;
+    own: boolean;
+    reactions: ReactionCount[];
+  }
+
+  let { reactions, own, onclick }: Props = $props();
+</script>
+
+<div class="Reactions" class:own>
+  {#each reactions as reaction, index (reaction.custom_emoji_id ?? reaction.emoji ?? index)}
+    <button
+      type="button"
+      class="reaction"
+      class:chosen={reaction.chosen}
+      {onclick}
+    >
+      {#if reaction.custom_emoji_id}
+        <CustomEmoji id={reaction.custom_emoji_id} size={1.25} />
+      {:else}
+        <span class="emoji">{reaction.emoji ?? "❓"}</span>
+      {/if}
+      <span class="count">{reaction.count}</span>
+    </button>
+  {/each}
+</div>
+
+<style lang="scss">
+  .Reactions {
+    display: flex;
+    flex-wrap: wrap;
+    gap: 0.25rem;
+    margin-top: 0.25rem;
+  }
+
+  .reaction {
+    display: inline-flex;
+    align-items: center;
+    gap: 0.1875rem;
+
+    height: 1.625rem;
+    padding: 0 0.4375rem 0 0.375rem;
+    border: 0;
+    border-radius: 1rem;
+
+    font-family: inherit;
+    font-size: 0.875rem;
+    font-weight: var(--font-weight-medium);
+    font-variant-numeric: tabular-nums;
+    color: var(--color-text);
+
+    cursor: pointer;
+    background-color: var(--color-message-reaction);
+
+    .own & {
+      background-color: var(--color-message-reaction-own);
+    }
+
+    &.chosen {
+      color: var(--color-white);
+      background-color: var(--color-primary);
+    }
+  }
+
+  .emoji {
+    font-size: 1rem;
+    line-height: 1;
+  }
+
+  .count {
+    line-height: 1;
+  }
+</style>