feat: multi-project routing — project_name in bridge, per-project channels, extension filtering

bridge.py

@@ -43,6 +43,7 @@ class ApprovalRequest:
     timestamp: float
     status: str = "pending"
     discord_message_id: int = 0
+    project_name: str = ""  # Project routing key
 
 
 @dataclass
@@ -72,11 +73,14 @@ class BridgeProtocol:
     def get_pending_requests(self) -> list[ApprovalRequest]:
         """Read all pending approval requests."""
         requests = []
+        fields = {f.name for f in ApprovalRequest.__dataclass_fields__.values()}
         for f in self.pending_dir.glob("*.json"):
             try:
                 data = json.loads(f.read_text(encoding="utf-8-sig"))
                 if data.get("status") == "pending":
-                    requests.append(ApprovalRequest(**data))
+                    # Filter to known fields only
+                    filtered = {k: v for k, v in data.items() if k in fields}
+                    requests.append(ApprovalRequest(**filtered))
             except (json.JSONDecodeError, TypeError, OSError) as e:
                 logger.warning(f"Bad pending request {f.name}: {e}")
         return requests
@@ -106,7 +110,7 @@ class BridgeProtocol:
             except (json.JSONDecodeError, OSError):
                 pass
 
-    def write_command(self, conversation_id: str, text: str):
+    def write_command(self, conversation_id: str, text: str, *, project_name: str = ""):
         """Write a user text command for Antigravity to consume."""
         cmd_id = f"{int(time.time() * 1000)}"
         filepath = self.commands_dir / f"{cmd_id}.json"
@@ -114,6 +118,7 @@ class BridgeProtocol:
         data = {
             "id": cmd_id,
             "conversation_id": conversation_id,
+            "project_name": project_name,
             "text": text,
             "timestamp": time.time(),
             "consumed": False,
@@ -123,5 +128,5 @@ class BridgeProtocol:
             json.dumps(data, ensure_ascii=False, indent=2),
             encoding="utf-8"
         )
-        logger.info(f"Command written: {cmd_id} for {conversation_id[:8]}")
+        logger.info(f"Command written: {cmd_id} → project={project_name}")
         return cmd_id