Add advBBS protocol message filter to router

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

config.example.yaml

@@ -10,6 +10,7 @@ bot:
   owner: ""                      # Owner's callsign (optional)
   respond_to_mentions: true      # Respond when name is mentioned
   respond_to_dms: true           # Respond to direct messages
+  filter_bbs_protocols: true     # Ignore advBBS sync/notification messages
 
 # === MESHTASTIC CONNECTION ===
 connection:

docker-entrypoint.sh

@@ -17,6 +17,7 @@ bot:
   owner: ""
   respond_to_mentions: true
   respond_to_dms: true
+  filter_bbs_protocols: true
 
 connection:
   type: tcp

meshai/config.py

@@ -19,6 +19,7 @@ class BotConfig:
     owner: str = ""
     respond_to_mentions: bool = True
     respond_to_dms: bool = True
+    filter_bbs_protocols: bool = True
 
 
 @dataclass

meshai/router.py

@@ -33,6 +33,14 @@ class RouteResult:
     query: Optional[str] = None  # For LLM, the cleaned query
 
 
+# advBBS protocol and notification prefixes to ignore
+ADVBBS_PREFIXES = (
+    "MAILREQ|", "MAILACK|", "MAILNAK|", "MAILDAT|", "MAILDLV|",
+    "BOARDREQ|", "BOARDACK|", "BOARDNAK|", "BOARDDAT|", "BOARDDLV|",
+    "advBBS|",
+    "[MAIL]",
+)
+
 # Patterns that suggest prompt injection attempts
 _INJECTION_PATTERNS = [
     re.compile(r"ignore\s+(all\s+)?previous", re.IGNORECASE),
@@ -80,6 +88,12 @@ class MessageRouter:
         if message.sender_id == self.connector.my_node_id:
             return False
 
+        # Ignore advBBS protocol and notification messages
+        if self.config.bot.filter_bbs_protocols:
+            if any(message.text.startswith(p) for p in ADVBBS_PREFIXES):
+                logger.debug(f"Ignoring advBBS message from {message.sender_id}: {message.text[:40]}...")
+                return False
+
         # Check if DM — conversational mode only, skip !commands
         # (let MeshMonitor or other bots handle bang commands in DMs)
         if message.is_dm: