feat(voice,agents,memory): voice points get their own branch, agent and keys

beaver_agent/voice/thread.py

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+"""Единственная ветка голосовых точек: как её открыть и как сменить за ночь."""
+
+from __future__ import annotations
+
+import logging
+from typing import TYPE_CHECKING
+
+from beaver_agent.voice.texts import KEY, ROTATED, TITLE
+
+if TYPE_CHECKING:
+    from beaver_gateway.conversations.service import Conversations
+    from beaver_gateway.storage.models import Conversation
+
+AGENT = "beaver-voice"
+"""Кто сидит в голосовой ветке; ему не видно ни справки, ни vault."""
+
+FRONTEND = "voice"
+TELEGRAM = "telegram"
+
+_log = logging.getLogger("beaver_agent.voice")
+
+
+async def current(conversations: Conversations) -> Conversation | None:
+    conv = await conversations.find_bound(frontend=FRONTEND, external_id=KEY)
+    return conv if conv is not None and conv.status == "open" else None
+
+
+async def open_thread(
+    conversations: Conversations, *, agent: str, window: str | None = None
+) -> Conversation:
+    """Завести ветку; без ``window`` окно ей открывает телеграм - новым топиком."""
+    conv = await conversations.spawn(
+        kind="branch",
+        agent=agent,
+        title=TITLE,
+        origin=FRONTEND,
+        binding=(TELEGRAM, window) if window else None,
+    )
+    await conversations.bind(conv, frontend=FRONTEND, external_id=KEY)
+    _log.info("голосовая ветка %s (%s)", conv.external_id, agent)
+    return conv
+
+
+async def window_of(conversations: Conversations, conv: Conversation) -> str | None:
+    for binding in await conversations.bindings(conv):
+        if binding.frontend == TELEGRAM and binding.visible:
+            return binding.external_id
+    return None
+
+
+async def rotate(conversations: Conversations) -> Conversation | None:
+    """Ночью - новая ветка в том же топике; молчавшую за сутки не трогаем."""
+    old = await current(conversations)
+    if old is None or old.last_user_activity_at is None:
+        return None
+    new = await open_thread(
+        conversations, agent=old.agent_name, window=await window_of(conversations, old)
+    )
+    await conversations.close(old)
+    await conversations.say(new, ROTATED)
+    _log.info("голосовая ветка: %s -> %s", old.external_id, new.external_id)
+    return new