fix: skip browser open on tray restart, add WLED rename TODO

Set WLED_RESTART=1 env var on tray restart so __main__.py skips
opening a new browser tab — the user already has one open.

Add important TODO item to eliminate WLED naming throughout the app
(package rename, i18n, build scripts, etc.).

server/src/wled_controller/__main__.py

@@ -5,6 +5,7 @@ shows a system-tray icon with **Show UI** / **Exit** actions.
 """
 
 import asyncio
+import os
 import sys
 import threading
 import time
@@ -36,6 +37,11 @@ def _open_browser(port: int, delay: float = 2.0) -> None:
     webbrowser.open(f"http://localhost:{port}")
 
 
+def _is_restart() -> bool:
+    """Detect if this is a restart (vs first launch)."""
+    return os.environ.get("WLED_RESTART", "") == "1"
+
+
 def main() -> None:
     config = get_config()
 
@@ -60,12 +66,13 @@ def main() -> None:
         )
         server_thread.start()
 
-        # Browser after a short delay
-        threading.Thread(
-            target=_open_browser,
-            args=(config.server.port,),
-            daemon=True,
-        ).start()
+        # Browser after a short delay (skip on restart — user already has a tab)
+        if not _is_restart():
+            threading.Thread(
+                target=_open_browser,
+                args=(config.server.port,),
+                daemon=True,
+            ).start()
 
         # Tray on main thread (blocking)
         tray = TrayManager(

server/src/wled_controller/tray.py

@@ -65,6 +65,7 @@ class TrayManager:
             return
         self._icon.stop()
         self._on_exit()
+        os.environ["WLED_RESTART"] = "1"
         os.execv(sys.executable, [sys.executable, "-m", "wled_controller"])
 
     def _shutdown(self, icon: "pystray.Icon", item: "pystray.MenuItem") -> None: