fix(userbot): mark deletions per row to stay under timescale decompression limit

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

@@ -30,6 +30,16 @@ ON CONFLICT (account_id, chat_id, message_id, date) DO UPDATE SET
     edited_at = now()
 """
 
+_FIND_DELETED = """
+SELECT chat_id, message_id, date FROM messages
+WHERE account_id = $1 AND message_id = ANY($2::bigint[]) AND deleted_at IS NULL
+"""
+
+_MARK_DELETED = """
+UPDATE messages SET deleted_at = now()
+WHERE account_id = $1 AND chat_id = $2 AND message_id = $3 AND date = $4
+"""
+
 _INSERT_VERSION = """
 INSERT INTO message_versions
     (account_id, chat_id, message_id, observed_at, edit_date, text, raw)
@@ -128,30 +138,34 @@ async def max_message_id(
     )
 
 
+async def _mark_deleted(
+    pool: asyncpg.Pool, account_id: int, rows: list[asyncpg.Record]
+) -> None:
+    for row in rows:
+        await pool.execute(
+            _MARK_DELETED, account_id, row["chat_id"], row["message_id"], row["date"]
+        )
+
+
 async def mark_deleted_box(
     pool: asyncpg.Pool, account_id: int, message_ids: list[int]
 ) -> None:
-    await pool.execute(
+    rows = await pool.fetch(
-        "UPDATE messages SET deleted_at = now() "
+        f"{_FIND_DELETED} AND chat_id > $3",
-        "WHERE account_id = $1 AND message_id = ANY($2::bigint[]) "
-        "AND chat_id > $3 AND deleted_at IS NULL",
         account_id,
         message_ids,
         CHANNEL_ID_THRESHOLD,
     )
+    await _mark_deleted(pool, account_id, rows)
 
 
 async def mark_deleted_channel(
     pool: asyncpg.Pool, account_id: int, chat_id: int, message_ids: list[int]
 ) -> None:
-    await pool.execute(
+    rows = await pool.fetch(
-        "UPDATE messages SET deleted_at = now() "
+        f"{_FIND_DELETED} AND chat_id = $3", account_id, message_ids, chat_id
-        "WHERE account_id = $1 AND chat_id = $2 AND message_id = ANY($3::bigint[]) "
-        "AND deleted_at IS NULL",
-        account_id,
-        chat_id,
-        message_ids,
     )
+    await _mark_deleted(pool, account_id, rows)
 
 
 async def add_version(  # noqa: PLR0913