Update src/tracker_dispatcher.py: circuit breaker, weather fix, TB health fix

src/tracker_dispatcher.py

@@ -197,12 +197,20 @@ class TrackerDispatcher:
         # poll setAngle/setMode from shared attributes on their update cycle.
         # RPC requires the device to be online for real-time communication,
         # which is not guaranteed.
-        try:
-            client.set_device_attributes(device_name, {"setAngle": angle, "setMode": "manual"})
-            tr.method = "attribute"
-            return tr
-        except Exception as attr_exc:
-            logger.warning("Attribute write failed for %s: %s, trying RPC", device_name, attr_exc)
+        # Retry attribute write with exponential backoff (1s, 2s)
+        attr_exc = None
+        for attempt in range(3):
+            try:
+                client.set_device_attributes(device_name, {"setAngle": angle, "setMode": "manual"})
+                tr.method = "attribute"
+                return tr
+            except Exception as exc:
+                attr_exc = exc
+                if attempt < 2:
+                    time.sleep(1 << attempt)  # 1s, 2s
+                    logger.warning("Attribute write retry %d for %s: %s", attempt + 1, device_name, exc)
+
+        logger.warning("Attribute write failed for %s after 3 attempts: %s, trying RPC", device_name, attr_exc)
 
         # Fallback: try RPC (may timeout if device is offline)
         try:
@@ -210,7 +218,7 @@ class TrackerDispatcher:
             tr.method = "rpc"
             return tr
         except Exception as rpc_exc:
-            tr.error = f"attribute and RPC both failed: {attr_exc}; {rpc_exc}"
+            tr.error = f"attribute (3 retries) and RPC both failed: {attr_exc}; {rpc_exc}"
             logger.error("Cannot send to %s: %s", device_name, tr.error)
             return tr