fix: Retry device name detection when bridge is not ready at startup

The background thread now retries with exponential backoff (5s→60s)
instead of giving up after 3 attempts. Also accepts detected device
name from bridge even when bridge health status is unhealthy.

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

app/main.py

@@ -6,6 +6,7 @@ import logging
 import re
 import shlex
 import threading
+import time
 import requests
 from flask import Flask, request as flask_request
 from flask_socketio import SocketIO, emit
@@ -88,11 +89,23 @@ def create_app():
     else:
         logger.info("Archive scheduler disabled")
 
-    # Fetch device name from bridge in background thread
+    # Fetch device name from bridge in background thread (with retry)
     def init_device_name():
         device_name, source = fetch_device_name_from_bridge()
         runtime_config.set_device_name(device_name, source)
 
+        # If we got a fallback name, keep retrying in background
+        retry_delay = 5
+        max_delay = 60
+        while source == "fallback":
+            time.sleep(retry_delay)
+            device_name, source = fetch_device_name_from_bridge()
+            if source != "fallback":
+                runtime_config.set_device_name(device_name, source)
+                logger.info(f"Device name resolved after retry: {device_name}")
+                break
+            retry_delay = min(retry_delay * 2, max_delay)
+
     threading.Thread(target=init_device_name, daemon=True).start()
 
     logger.info(f"mc-webui started - device: {config.MC_DEVICE_NAME}")

app/meshcore/cli.py

@@ -996,7 +996,7 @@ def fetch_device_name_from_bridge(max_retries: int = 3, retry_delay: float = 2.0
             response = requests.get(bridge_health_url, timeout=5)
             if response.status_code == 200:
                 data = response.json()
-                if data.get('status') == 'healthy':
+                if data.get('status') == 'healthy' or data.get('device_name_source') == 'detected':
                     device_name = data.get('device_name')
                     source = data.get('device_name_source', 'unknown')
                     if device_name: