fix(backend): profile history gets a row only when a field really changed, partial snapshots keep the known phone and username

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

@@ -1,4 +1,4 @@
-from dataclasses import dataclass
+from dataclasses import dataclass, field
 
 from pyrogram import Client, raw
 from pyrogram.types import Chat, User
@@ -12,6 +12,11 @@ class ProfileFields:
     phone: str | None = None
     photo_unique_id: str | None = None
     is_deleted_account: bool = False
+    unknown: frozenset[str] = field(default=frozenset(), compare=False)
+
+
+MIN_UNKNOWN = frozenset({"username", "phone"})
+CHAT_UNKNOWN = frozenset({"phone", "is_deleted_account"})
 
 
 def active_username(usernames: list[raw.types.Username]) -> str | None:
@@ -35,6 +40,7 @@ async def snapshot_from_user(
         phone=user.phone_number if user else None,
         photo_unique_id=photo_unique_id,
         is_deleted_account=bool(getattr(raw_user, "deleted", False)),
+        unknown=MIN_UNKNOWN if getattr(raw_user, "min", False) else frozenset(),
     )
     return fields, photo_file_id, photo_unique_id
 
@@ -52,6 +58,7 @@ def snapshot_from_high_level(
         phone=user.phone_number,
         photo_unique_id=photo_unique_id,
         is_deleted_account=bool(user.is_deleted),
+        unknown=MIN_UNKNOWN if user.is_min else frozenset(),
     )
     return fields, photo_file_id, photo_unique_id
 
@@ -64,8 +71,7 @@ def snapshot_from_chat(chat: Chat) -> tuple[ProfileFields, str | None, str | Non
         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,
+        unknown=CHAT_UNKNOWN,
     )
     return fields, photo_file_id, photo_unique_id