feat: relax telegram ACL to chat id (#26)

docs/developing.md

@@ -162,7 +162,7 @@ See `docs/adding-a-runner.md` for the full guide and a worked example.
 ```
 Telegram Update
     ↓
-poll_updates() drains backlog, long-polls, filters chat_id == from_id == cfg.chat_id
+poll_updates() drains backlog, long-polls, filters chat_id == cfg.chat_id
     ↓
 run_main_loop() spawns tasks in TaskGroup
     ↓

readme.md

@@ -95,7 +95,7 @@ if you prefer no notifications, `--no-final-notify` edits the progress message i
 
 ## notes
 
-* private chat only: the bot only responds to the configured `chat_id`
+* the bot only responds to the configured `chat_id` (private or group)
 * run only one takopi instance per bot token: multiple instances will race telegram's `getUpdates` offsets and cause missed updates
 
 ## development

src/takopi/bridge.py

@@ -679,7 +679,7 @@ async def poll_updates(cfg: BridgeConfig) -> AsyncIterator[dict[str, Any]]:
             msg = upd["message"]
             if "text" not in msg:
                 continue
-            if not (msg["chat"]["id"] == msg["from"]["id"] == cfg.chat_id):
+            if msg["chat"]["id"] != cfg.chat_id:
                 continue
             yield msg