feat(01-02): rewrite matrix new chat handler for spaces

- create new chat rooms inside the user's space
- store space-aware room metadata with next_chat_id
- handle room creation failures with user-facing messages

adapter/matrix/handlers/chat.py

@@ -2,9 +2,14 @@ from __future__ import annotations
 
 from typing import Any, Awaitable, Callable
 
-from adapter.matrix.store import set_room_meta
+import structlog
+from nio.responses import RoomCreateError
+
+from adapter.matrix.store import get_user_meta, next_chat_id, set_room_meta
 from core.protocol import IncomingCommand, OutgoingMessage
 
+logger = structlog.get_logger(__name__)
+
 
 async def _fallback_new_chat(
     event: IncomingCommand, auth_mgr, platform, chat_mgr, settings_mgr
@@ -40,22 +45,53 @@ def make_handle_new_chat(
             return await _fallback_new_chat(event, auth_mgr, platform, chat_mgr, settings_mgr)
 
         if not await auth_mgr.is_authenticated(event.user_id):
-            return [OutgoingMessage(chat_id=event.chat_id, text="Введите !start чтобы начать.")]
+            return [
+                OutgoingMessage(
+                    chat_id=event.chat_id,
+                    text="Сначала примите приглашение бота.",
+                )
+            ]
+
+        user_meta = await get_user_meta(store, event.user_id)
+        space_id = (user_meta or {}).get("space_id")
+        if not space_id:
+            return [
+                OutgoingMessage(
+                    chat_id=event.chat_id,
+                    text="Ошибка: Space не найден. Примите приглашение бота заново.",
+                )
+            ]
 
         name = " ".join(event.args).strip() if event.args else ""
-        chats = await chat_mgr.list_active(event.user_id)
-        chat_id = f"C{len(chats) + 1}"
+        chat_id = await next_chat_id(store, event.user_id)
         room_name = name or f"Чат {chat_id}"
 
         response = await client.room_create(
             name=room_name,
-            invite=[event.user_id],
+            visibility="private",
             is_direct=False,
         )
+        if isinstance(response, RoomCreateError):
+            logger.error(
+                "room_create failed",
+                user_id=event.user_id,
+                status_code=getattr(response, "status_code", None),
+            )
+            return [OutgoingMessage(chat_id=event.chat_id, text="Не удалось создать комнату.")]
+
         room_id = getattr(response, "room_id", None)
         if not room_id:
             return [OutgoingMessage(chat_id=event.chat_id, text="Не удалось создать комнату.")]
 
+        homeserver = event.user_id.split(":")[-1]
+        await client.room_put_state(
+            room_id=space_id,
+            event_type="m.space.child",
+            content={"via": [homeserver]},
+            state_key=room_id,
+        )
+        await client.room_invite(room_id, event.user_id)
+
         await set_room_meta(
             store,
             room_id,
@@ -64,6 +100,7 @@ def make_handle_new_chat(
                 "chat_id": chat_id,
                 "display_name": room_name,
                 "matrix_user_id": event.user_id,
+                "space_id": space_id,
             },
         )
         ctx = await chat_mgr.get_or_create(
@@ -76,7 +113,7 @@ def make_handle_new_chat(
         return [
             OutgoingMessage(
                 chat_id=event.chat_id,
-                text=f"Создан чат: {ctx.display_name} ({ctx.chat_id})\nКомната: {room_id}",
+                text=f"Создан чат: {ctx.display_name} ({ctx.chat_id})",
             )
         ]