feat(api,userbot,frontend): add accounts from the web ui and isolate per-account settings

backend/src/api/routers/policy.py

@@ -71,9 +71,15 @@ async def get_policy(pool: FromDishka[asyncpg.Pool], policy_id: int) -> PolicyRe
 
 @router.put("/{policy_id}")
 async def update_policy(
-    pool: FromDishka[asyncpg.Pool], policy_id: int, body: CaptureToggles
+    pool: FromDishka[asyncpg.Pool],
+    policy_id: int,
+    body: CaptureToggles,
+    account_id: Annotated[int | None, Query()] = None,
 ) -> PolicyRecord:
-    record = await repository.update_policy(pool, policy_id, body)
+    if account_id is None:
+        record = await repository.update_policy(pool, policy_id, body)
+    else:
+        record = await repository.override_policy(pool, policy_id, account_id, body)
     if record is None:
         raise HTTPException(status_code=404, detail="policy not found")
     await pool.execute(f"NOTIFY {POLICY_CHANGED_CHANNEL}")