Waiter PWA fixes, and extra feautures. Also added Emergency Mode, search etc

local_backend/routers/messages.py

@@ -11,6 +11,7 @@ from schemas.message import (
     QuickTemplateCreate, QuickTemplateUpdate, QuickTemplateOut,
 )
 from routers.deps import get_current_user, require_manager
+from services.sse_bus import broadcast_sync
 
 router = APIRouter()
 
@@ -113,7 +114,22 @@ def send_message(
     db.add(msg)
     db.commit()
     msg = _load_msg(db, msg.id)
-    return _message_out(msg)
+    out = _message_out(msg)
+    # Broadcast to targeted users (empty list = all connected users)
+    target_ids = body.target_waiter_ids if body.target_waiter_ids else None
+    broadcast_sync(
+        "message_sent",
+        {
+            "id": out.id,
+            "sender_id": out.sender_id,
+            "sender_name": out.sender_name,
+            "body": out.body,
+            "table_ids": out.table_ids,
+            "created_at": out.created_at.isoformat() if out.created_at else None,
+        },
+        user_ids=target_ids,
+    )
+    return out
 
 
 @router.get("/unread", response_model=List[StaffMessageOut])