diff --git a/bridge/src/whatsapp.ts b/bridge/src/whatsapp.ts
index 04eba0f..a98f3a8 100644
--- a/bridge/src/whatsapp.ts
+++ b/bridge/src/whatsapp.ts
@@ -29,6 +29,7 @@ export interface InboundMessage {
   content: string;
   timestamp: number;
   isGroup: boolean;
+  wasMentioned?: boolean;
   media?: string[];
 }
 
@@ -48,6 +49,31 @@ export class WhatsAppClient {
     this.options = options;
   }
 
+  private normalizeJid(jid: string | undefined | null): string {
+    return (jid || '').split(':')[0];
+  }
+
+  private wasMentioned(msg: any): boolean {
+    if (!msg?.key?.remoteJid?.endsWith('@g.us')) return false;
+
+    const candidates = [
+      msg?.message?.extendedTextMessage?.contextInfo?.mentionedJid,
+      msg?.message?.imageMessage?.contextInfo?.mentionedJid,
+      msg?.message?.videoMessage?.contextInfo?.mentionedJid,
+      msg?.message?.documentMessage?.contextInfo?.mentionedJid,
+      msg?.message?.audioMessage?.contextInfo?.mentionedJid,
+    ];
+    const mentioned = candidates.flatMap((items) => (Array.isArray(items) ? items : []));
+    if (mentioned.length === 0) return false;
+
+    const selfIds = new Set(
+      [this.sock?.user?.id, this.sock?.user?.lid, this.sock?.user?.jid]
+        .map((jid) => this.normalizeJid(jid))
+        .filter(Boolean),
+    );
+    return mentioned.some((jid: string) => selfIds.has(this.normalizeJid(jid)));
+  }
+
   async connect(): Promise<void> {
     const logger = pino({ level: 'silent' });
     const { state, saveCreds } = await useMultiFileAuthState(this.options.authDir);
@@ -145,6 +171,7 @@ export class WhatsAppClient {
         if (!finalContent && mediaPaths.length === 0) continue;
 
         const isGroup = msg.key.remoteJid?.endsWith('@g.us') || false;
+        const wasMentioned = this.wasMentioned(msg);
 
         this.options.onMessage({
           id: msg.key.id || '',
@@ -153,6 +180,7 @@ export class WhatsAppClient {
           content: finalContent,
           timestamp: msg.messageTimestamp as number,
           isGroup,
+          ...(isGroup ? { wasMentioned } : {}),
           ...(mediaPaths.length > 0 ? { media: mediaPaths } : {}),
         });
       }
diff --git a/nanobot/channels/feishu.py b/nanobot/channels/feishu.py
index 64d92e7..75bd474 100644
--- a/nanobot/channels/feishu.py
+++ b/nanobot/channels/feishu.py
@@ -938,6 +938,9 @@ class FeishuChannel(BaseChannel):
             reply_message_id: str | None = None
             if self.config.reply_to_message and not msg.metadata.get("_progress", False):
                 reply_message_id = msg.metadata.get("message_id") or None
+            # For topic group messages, always reply to keep context in thread
+            elif msg.metadata.get("thread_id"):
+                reply_message_id = msg.metadata.get("root_id") or msg.metadata.get("message_id") or None
 
             first_send = True
 
@@ -1095,6 +1098,7 @@ class FeishuChannel(BaseChannel):
 
             parent_id = getattr(message, "parent_id", None) or None
             root_id = getattr(message, "root_id", None) or None
+            thread_id = getattr(message, "thread_id", None) or None
 
             if parent_id and self._client:
                 loop = asyncio.get_running_loop()
@@ -1120,6 +1124,7 @@ class FeishuChannel(BaseChannel):
                     "msg_type": msg_type,
                     "parent_id": parent_id,
                     "root_id": root_id,
+                    "thread_id": thread_id,
                 }
             )
 
diff --git a/nanobot/channels/qq.py b/nanobot/channels/qq.py
index 7f0742c..ea01ad3 100644
--- a/nanobot/channels/qq.py
+++ b/nanobot/channels/qq.py
@@ -2,11 +2,15 @@
 
 import asyncio
 import base64
+import os
+import re
+import time
 from collections import deque
 from pathlib import Path
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, Any
 from urllib.parse import urlparse
 
+import aiohttp
 from loguru import logger
 
 from nanobot.bus.events import OutboundMessage
@@ -16,6 +20,11 @@ from nanobot.config.schema import QQConfig, QQInstanceConfig
 from nanobot.security.network import validate_url_target
 from nanobot.utils.delivery import delivery_artifacts_root, is_image_file
 
+try:
+    from nanobot.config.paths import get_media_dir
+except Exception:  # pragma: no cover
+    get_media_dir = None  # type: ignore
+
 try:
     import botpy
     from botpy.http import Route
@@ -34,6 +43,33 @@ if TYPE_CHECKING:
     from botpy.message import C2CMessage, GroupMessage
 
 
+_IMAGE_EXTS = {
+    ".png",
+    ".jpg",
+    ".jpeg",
+    ".gif",
+    ".bmp",
+    ".webp",
+    ".tif",
+    ".tiff",
+    ".ico",
+    ".svg",
+}
+_SAFE_NAME_RE = re.compile(r"[^\w.\-()\[\]（）【】\u4e00-\u9fff]+", re.UNICODE)
+
+
+def _sanitize_filename(name: str) -> str:
+    """Sanitize filename to avoid traversal and problematic characters."""
+    name = Path(name or "").name.strip()
+    name = _SAFE_NAME_RE.sub("_", name).strip("._ ")
+    return name
+
+
+def _is_image_name(name: str) -> bool:
+    """Return whether the file name looks like an image."""
+    return Path(name).suffix.lower() in _IMAGE_EXTS
+
+
 def _make_bot_class(channel: "QQChannel") -> "type[botpy.Client]":
     """Create a botpy Client subclass bound to the given channel."""
     intents = botpy.Intents(public_messages=True, direct_message=True)
@@ -71,17 +107,21 @@ class QQChannel(BaseChannel):
 
     def __init__(
         self,
-        config: QQConfig | QQInstanceConfig,
+        config: QQConfig | QQInstanceConfig | dict,
         bus: MessageBus,
         workspace: str | Path | None = None,
     ):
+        if isinstance(config, dict):
+            config = QQConfig.model_validate(config)
         super().__init__(config, bus)
         self.config: QQConfig | QQInstanceConfig = config
         self._client: "botpy.Client | None" = None
-        self._processed_ids: deque = deque(maxlen=1000)
+        self._http: aiohttp.ClientSession | None = None
+        self._processed_ids: deque[str] = deque(maxlen=1000)
         self._msg_seq: int = 1  # 消息序列号，避免被 QQ API 去重
         self._chat_type_cache: dict[str, str] = {}
         self._workspace = Path(workspace).expanduser() if workspace is not None else None
+        self._media_root = self._init_media_root()
 
     @staticmethod
     def _is_remote_media(path: str) -> bool:
@@ -153,14 +193,24 @@ class QQChannel(BaseChannel):
         """Encode a local media file as base64 for QQ rich-media upload."""
         return base64.b64encode(path.read_bytes()).decode("ascii")
 
-    async def _post_text_message(self, chat_id: str, msg_type: str, content: str, msg_id: str | None) -> None:
-        """Send a plain-text QQ message."""
-        payload = {
-            "msg_type": 0,
-            "content": content,
+    async def _post_text_message(
+        self,
+        chat_id: str,
+        msg_type: str,
+        content: str,
+        msg_id: str | None,
+    ) -> None:
+        """Send a plain-text or markdown QQ message."""
+        use_markdown = self.config.msg_format == "markdown"
+        payload: dict[str, Any] = {
+            "msg_type": 2 if use_markdown else 0,
             "msg_id": msg_id,
             "msg_seq": self._next_msg_seq(),
         }
+        if use_markdown:
+            payload["markdown"] = {"content": content}
+        else:
+            payload["content"] = content
         if msg_type == "group":
             await self._client.api.post_group_message(group_openid=chat_id, **payload)
         else:
@@ -248,8 +298,24 @@ class QQChannel(BaseChannel):
                 msg_seq=self._next_msg_seq(),
             )
 
+    def _init_media_root(self) -> Path:
+        """Choose a directory for saving inbound attachments."""
+        if self.config.media_dir:
+            root = Path(self.config.media_dir).expanduser()
+        elif get_media_dir:
+            try:
+                root = Path(get_media_dir("qq"))
+            except Exception:
+                root = Path.home() / ".nanobot" / "media" / "qq"
+        else:
+            root = Path.home() / ".nanobot" / "media" / "qq"
+
+        root.mkdir(parents=True, exist_ok=True)
+        logger.info("QQ media directory: {}", str(root))
+        return root
+
     async def start(self) -> None:
-        """Start the QQ bot."""
+        """Start the QQ bot with auto-reconnect."""
         if not QQ_AVAILABLE:
             logger.error("QQ SDK not installed. Run: pip install qq-botpy")
             return
@@ -259,8 +325,8 @@ class QQChannel(BaseChannel):
             return
 
         self._running = True
-        bot_class = _make_bot_class(self)
-        self._client = bot_class()
+        self._http = aiohttp.ClientSession(timeout=aiohttp.ClientTimeout(total=120))
+        self._client = _make_bot_class(self)()
         logger.info("QQ bot started (C2C & Group supported)")
         await self._run_bot()
 
@@ -276,13 +342,20 @@ class QQChannel(BaseChannel):
                 await asyncio.sleep(5)
 
     async def stop(self) -> None:
-        """Stop the QQ bot."""
+        """Stop bot and cleanup resources."""
         self._running = False
         if self._client:
             try:
                 await self._client.close()
             except Exception:
                 pass
+        self._client = None
+        if self._http:
+            try:
+                await self._http.close()
+            except Exception:
+                pass
+        self._http = None
         logger.info("QQ bot stopped")
 
     async def send(self, msg: OutboundMessage) -> None:
@@ -297,11 +370,13 @@ class QQChannel(BaseChannel):
             content_sent = False
             fallback_lines: list[str] = []
 
-            for media_path in msg.media:
+            for media_path in msg.media or []:
                 local_media_path: Path | None = None
                 local_file_type: int | None = None
                 if not self._is_remote_media(media_path):
-                    local_media_path, local_file_type, publish_error = self._resolve_local_media(media_path)
+                    local_media_path, local_file_type, publish_error = self._resolve_local_media(
+                        media_path
+                    )
                     if local_media_path is None:
                         logger.warning(
                             "QQ outbound local media could not be uploaded directly: {} ({})",
@@ -353,7 +428,9 @@ class QQChannel(BaseChannel):
                     logger.error("Error sending QQ media {}: {}", media_path, media_error)
                     if local_media_path is not None:
                         fallback_lines.append(
-                            self._failed_media_notice(media_path, "QQ local file_data upload failed")
+                            self._failed_media_notice(
+                                media_path, "QQ local file_data upload failed"
+                            )
                         )
                     else:
                         fallback_lines.append(self._failed_media_notice(media_path))
@@ -372,29 +449,161 @@ class QQChannel(BaseChannel):
     async def _on_message(self, data: "C2CMessage | GroupMessage", is_group: bool = False) -> None:
         """Handle incoming message from QQ."""
         try:
-            # Dedup by message ID
             if data.id in self._processed_ids:
                 return
             self._processed_ids.append(data.id)
 
-            content = (data.content or "").strip()
-            if not content:
-                return
-
             if is_group:
                 chat_id = data.group_openid
                 user_id = data.author.member_openid
                 self._chat_type_cache[chat_id] = "group"
             else:
-                chat_id = str(getattr(data.author, 'id', None) or getattr(data.author, 'user_openid', 'unknown'))
+                chat_id = str(
+                    getattr(data.author, "id", None)
+                    or getattr(data.author, "user_openid", "unknown")
+                )
                 user_id = chat_id
                 self._chat_type_cache[chat_id] = "c2c"
 
+            content = (data.content or "").strip()
+            attachments = getattr(data, "attachments", None) or []
+            media_paths, recv_lines, att_meta = await self._handle_attachments(attachments)
+            if recv_lines:
+                tag = "[Image]" if any(_is_image_name(Path(p).name) for p in media_paths) else "[File]"
+                file_block = "Received files:\n" + "\n".join(recv_lines)
+                content = f"{content}\n\n{file_block}".strip() if content else f"{tag}\n{file_block}"
+
+            if not content and not media_paths:
+                return
+
             await self._handle_message(
                 sender_id=user_id,
                 chat_id=chat_id,
                 content=content,
-                metadata={"message_id": data.id},
+                media=media_paths or None,
+                metadata={
+                    "message_id": data.id,
+                    "attachments": att_meta,
+                },
             )
         except Exception:
             logger.exception("Error handling QQ message")
+
+    async def _handle_attachments(self, attachments: list[Any]) -> tuple[list[str], list[str], list[dict[str, Any]]]:
+        """Extract, download, and format QQ attachments for downstream tools."""
+        media_paths: list[str] = []
+        recv_lines: list[str] = []
+        att_meta: list[dict[str, Any]] = []
+        if not attachments:
+            return media_paths, recv_lines, att_meta
+
+        for att in attachments:
+            url = getattr(att, "url", None)
+            filename = getattr(att, "filename", None)
+            content_type = getattr(att, "content_type", None)
+            local_path = (
+                await self._download_to_media_dir_chunked(url, filename_hint=filename or "")
+                if url
+                else None
+            )
+            att_meta.append(
+                {
+                    "url": url,
+                    "filename": filename,
+                    "content_type": content_type,
+                    "saved_path": local_path,
+                }
+            )
+            shown_name = filename or url or "file"
+            if local_path:
+                media_paths.append(local_path)
+                recv_lines.append(f"- {shown_name}\n  saved: {local_path}")
+            else:
+                recv_lines.append(f"- {shown_name}\n  saved: [download failed]")
+
+        return media_paths, recv_lines, att_meta
+
+    async def _download_to_media_dir_chunked(self, url: str, filename_hint: str = "") -> str | None:
+        """Download an inbound attachment using chunked streaming writes."""
+        if not self._http:
+            self._http = aiohttp.ClientSession(timeout=aiohttp.ClientTimeout(total=120))
+
+        safe = _sanitize_filename(filename_hint)
+        timestamp_ms = int(time.time() * 1000)
+        tmp_path: Path | None = None
+
+        try:
+            async with self._http.get(
+                url,
+                timeout=aiohttp.ClientTimeout(total=120),
+                allow_redirects=True,
+            ) as resp:
+                if resp.status != 200:
+                    logger.warning("QQ download failed: status={} url={}", resp.status, url)
+                    return None
+
+                content_type = (resp.headers.get("Content-Type") or "").lower()
+                ext = Path(urlparse(url).path).suffix or Path(filename_hint).suffix
+                if not ext:
+                    if "png" in content_type:
+                        ext = ".png"
+                    elif "jpeg" in content_type or "jpg" in content_type:
+                        ext = ".jpg"
+                    elif "gif" in content_type:
+                        ext = ".gif"
+                    elif "webp" in content_type:
+                        ext = ".webp"
+                    elif "pdf" in content_type:
+                        ext = ".pdf"
+                    else:
+                        ext = ".bin"
+
+                if safe and not Path(safe).suffix:
+                    safe = safe + ext
+                filename = safe or f"qq_file_{timestamp_ms}{ext}"
+                target = self._media_root / filename
+                if target.exists():
+                    target = self._media_root / f"{target.stem}_{timestamp_ms}{target.suffix}"
+                tmp_path = target.with_suffix(target.suffix + ".part")
+
+                chunk_size = max(1024, int(self.config.download_chunk_size or 262144))
+                max_bytes = max(
+                    1024 * 1024,
+                    int(self.config.download_max_bytes or (200 * 1024 * 1024)),
+                )
+                downloaded = 0
+
+                def _open_tmp() -> Any:
+                    tmp_path.parent.mkdir(parents=True, exist_ok=True)
+                    return open(tmp_path, "wb")  # noqa: SIM115
+
+                f = await asyncio.to_thread(_open_tmp)
+                try:
+                    async for chunk in resp.content.iter_chunked(chunk_size):
+                        if not chunk:
+                            continue
+                        downloaded += len(chunk)
+                        if downloaded > max_bytes:
+                            logger.warning(
+                                "QQ download exceeded max_bytes={} url={} -> abort",
+                                max_bytes,
+                                url,
+                            )
+                            return None
+                        await asyncio.to_thread(f.write, chunk)
+                finally:
+                    await asyncio.to_thread(f.close)
+
+                await asyncio.to_thread(os.replace, tmp_path, target)
+                tmp_path = None
+                logger.info("QQ file saved: {}", str(target))
+                return str(target)
+        except Exception as e:
+            logger.error("QQ download error: {}", e)
+            return None
+        finally:
+            if tmp_path is not None:
+                try:
+                    tmp_path.unlink(missing_ok=True)
+                except Exception:
+                    pass
diff --git a/nanobot/channels/telegram.py b/nanobot/channels/telegram.py
index 1fb64e7..2081fc2 100644
--- a/nanobot/channels/telegram.py
+++ b/nanobot/channels/telegram.py
@@ -10,7 +10,7 @@ from dataclasses import dataclass
 from typing import Any
 
 from loguru import logger
-from telegram import BotCommand, ReplyParameters, Update
+from telegram import BotCommand, ReactionTypeEmoji, ReplyParameters, Update
 from telegram.error import TimedOut
 from telegram.ext import Application, CommandHandler, ContextTypes, MessageHandler, filters
 from telegram.request import HTTPXRequest
@@ -800,6 +800,7 @@ class TelegramChannel(BaseChannel):
                     "session_key": session_key,
                 }
                 self._start_typing(str_chat_id)
+                await self._add_reaction(str_chat_id, message.message_id, self.config.react_emoji)
             buf = self._media_group_buffers[key]
             if content and content != "[empty message]":
                 buf["contents"].append(content)
@@ -810,6 +811,7 @@ class TelegramChannel(BaseChannel):
 
         # Start typing indicator before processing
         self._start_typing(str_chat_id)
+        await self._add_reaction(str_chat_id, message.message_id, self.config.react_emoji)
 
         # Forward to the message bus
         await self._handle_message(
@@ -849,6 +851,19 @@ class TelegramChannel(BaseChannel):
         if task and not task.done():
             task.cancel()
 
+    async def _add_reaction(self, chat_id: str, message_id: int, emoji: str) -> None:
+        """Add an emoji reaction best-effort without interrupting message handling."""
+        if not self._app or not emoji:
+            return
+        try:
+            await self._app.bot.set_message_reaction(
+                chat_id=int(chat_id),
+                message_id=message_id,
+                reaction=[ReactionTypeEmoji(emoji=emoji)],
+            )
+        except Exception as e:
+            logger.debug("Telegram reaction failed: {}", e)
+
     async def _typing_loop(self, chat_id: str) -> None:
         """Repeatedly send 'typing' action until cancelled."""
         try:
diff --git a/nanobot/channels/whatsapp.py b/nanobot/channels/whatsapp.py
index 76a98e9..9246e2c 100644
--- a/nanobot/channels/whatsapp.py
+++ b/nanobot/channels/whatsapp.py
@@ -32,7 +32,9 @@ class WhatsAppChannel(BaseChannel):
     def default_config(cls) -> dict[str, object]:
         return WhatsAppConfig().model_dump(by_alias=True)
 
-    def __init__(self, config: WhatsAppConfig | WhatsAppInstanceConfig, bus: MessageBus):
+    def __init__(self, config: WhatsAppConfig | WhatsAppInstanceConfig | dict, bus: MessageBus):
+        if isinstance(config, dict):
+            config = WhatsAppConfig.model_validate(config)
         super().__init__(config, bus)
         self.config: WhatsAppConfig | WhatsAppInstanceConfig = config
         self._ws = None
@@ -175,6 +177,12 @@ class WhatsAppChannel(BaseChannel):
                     self._processed_message_ids.popitem(last=False)
 
             # Extract just the phone number or lid as chat_id
+            is_group = data.get("isGroup", False)
+            was_mentioned = data.get("wasMentioned", False)
+
+            if is_group and self.config.group_policy == "mention" and not was_mentioned:
+                return
+
             user_id = pn if pn else sender
             sender_id = user_id.split("@")[0] if "@" in user_id else user_id
             logger.info("Sender {}", sender)
diff --git a/nanobot/config/schema.py b/nanobot/config/schema.py
index 1d8d5d1..a33f5a0 100644
--- a/nanobot/config/schema.py
+++ b/nanobot/config/schema.py
@@ -21,6 +21,7 @@ class WhatsAppConfig(Base):
     bridge_url: str = "ws://localhost:3001"
     bridge_token: str = ""  # Shared token for bridge auth (optional, recommended)
     allow_from: list[str] = Field(default_factory=list)  # Allowed phone numbers
+    group_policy: Literal["open", "mention"] = "open"
 
 
 class WhatsAppInstanceConfig(WhatsAppConfig):
@@ -46,6 +47,7 @@ class TelegramConfig(Base):
         None  # HTTP/SOCKS5 proxy URL, e.g. "http://127.0.0.1:7890" or "socks5://127.0.0.1:1080"
     )
     reply_to_message: bool = False  # If true, bot replies quote the original message
+    react_emoji: str = "👀"
     group_policy: Literal["open", "mention"] = "mention"  # "mention" responds when @mentioned or replied to, "open" responds to all
     connection_pool_size: int = 32  # Outbound Telegram API HTTP pool size
     pool_timeout: float = 5.0  # Shared HTTP pool timeout for bot sends and getUpdates
@@ -319,6 +321,10 @@ class QQConfig(Base):
     app_id: str = ""  # 机器人 ID (AppID) from q.qq.com
     secret: str = ""  # 机器人密钥 (AppSecret) from q.qq.com
     allow_from: list[str] = Field(default_factory=list)  # Allowed user openids
+    msg_format: Literal["plain", "markdown"] = "plain"
+    media_dir: str = ""
+    download_chunk_size: int = 1024 * 256
+    download_max_bytes: int = 1024 * 1024 * 200
     media_base_url: str = ""  # Public base URL used to expose workspace/out QQ media files
 
 
diff --git a/tests/test_qq_channel.py b/tests/test_qq_channel.py
index 8eefdd8..fe8287a 100644
--- a/tests/test_qq_channel.py
+++ b/tests/test_qq_channel.py
@@ -80,6 +80,7 @@ async def test_on_group_message_routes_to_group_chat_id() -> None:
         content="hello",
         group_openid="group123",
         author=SimpleNamespace(member_openid="user1"),
+        attachments=[],
     )
 
     await channel._on_message(data, is_group=True)
@@ -142,6 +143,35 @@ async def test_send_c2c_message_uses_plain_text_c2c_api_with_msg_seq() -> None:
     assert not channel._client.api.group_calls
 
 
+@pytest.mark.asyncio
+async def test_send_group_message_uses_markdown_when_configured() -> None:
+    channel = QQChannel(
+        QQConfig(app_id="app", secret="secret", allow_from=["*"], msg_format="markdown"),
+        MessageBus(),
+    )
+    channel._client = _FakeClient()
+    channel._chat_type_cache["group123"] = "group"
+
+    await channel.send(
+        OutboundMessage(
+            channel="qq",
+            chat_id="group123",
+            content="**hello**",
+            metadata={"message_id": "msg1"},
+        )
+    )
+
+    assert len(channel._client.api.group_calls) == 1
+    call = channel._client.api.group_calls[0]
+    assert call == {
+        "group_openid": "group123",
+        "msg_type": 2,
+        "markdown": {"content": "**hello**"},
+        "msg_id": "msg1",
+        "msg_seq": 2,
+    }
+
+
 @pytest.mark.asyncio
 async def test_send_group_remote_media_url_uses_file_api_then_media_message(monkeypatch) -> None:
     channel = QQChannel(QQConfig(app_id="app", secret="secret", allow_from=["*"]), MessageBus())
diff --git a/tests/test_whatsapp_channel.py b/tests/test_whatsapp_channel.py
index 1413429..dea15d7 100644
--- a/tests/test_whatsapp_channel.py
+++ b/tests/test_whatsapp_channel.py
@@ -106,3 +106,52 @@ async def test_send_when_disconnected_is_noop():
     await ch.send(msg)
 
     ch._ws.send.assert_not_called()
+
+
+@pytest.mark.asyncio
+async def test_group_policy_mention_skips_unmentioned_group_message():
+    ch = WhatsAppChannel({"enabled": True, "groupPolicy": "mention"}, MagicMock())
+    ch._handle_message = AsyncMock()
+
+    await ch._handle_bridge_message(
+        json.dumps(
+            {
+                "type": "message",
+                "id": "m1",
+                "sender": "12345@g.us",
+                "pn": "user@s.whatsapp.net",
+                "content": "hello group",
+                "timestamp": 1,
+                "isGroup": True,
+                "wasMentioned": False,
+            }
+        )
+    )
+
+    ch._handle_message.assert_not_called()
+
+
+@pytest.mark.asyncio
+async def test_group_policy_mention_accepts_mentioned_group_message():
+    ch = WhatsAppChannel({"enabled": True, "groupPolicy": "mention"}, MagicMock())
+    ch._handle_message = AsyncMock()
+
+    await ch._handle_bridge_message(
+        json.dumps(
+            {
+                "type": "message",
+                "id": "m1",
+                "sender": "12345@g.us",
+                "pn": "user@s.whatsapp.net",
+                "content": "hello @bot",
+                "timestamp": 1,
+                "isGroup": True,
+                "wasMentioned": True,
+            }
+        )
+    )
+
+    ch._handle_message.assert_awaited_once()
+    kwargs = ch._handle_message.await_args.kwargs
+    assert kwargs["chat_id"] == "12345@g.us"
+    assert kwargs["sender_id"] == "user"