defer GUI root activation until backend is running

mediahive/server.py

@@ -158,6 +158,16 @@ async def lifespan(app: FastAPI):
     await store.load_snapshot()
     _scanner_active = False
 
+    initial_root_raw = os.environ.get("MEDIAHIVE_PATH")
+    defer_initial_root = os.environ.get("MEDIAHIVE_DEFER_INITIAL_ROOT") == "1"
+
+    if initial_root_raw and not defer_initial_root:
+        initial_root = Path(initial_root_raw).expanduser()
+        if not initial_root.is_absolute():
+            initial_root = Path.cwd() / initial_root
+        _folder_switch_task = asyncio.create_task(_switch_folder(initial_root))
+        logger.info("Server started; scheduled initial media root activation")
+    else:
         logger.info(
             "Server started without active media root; waiting for folder activation"
         )

mediahive/winmain.py

@@ -775,6 +775,7 @@ def winmain() -> None:
 
     mediaroot = _normalize_media_root_input(folder)
     os.environ["MEDIAHIVE_PATH"] = mediaroot.as_posix()
+    os.environ["MEDIAHIVE_DEFER_INITIAL_ROOT"] = "1"
 
     backend_port = _reserve_backend_port()
     backend_url = f"http://{BACKEND_HOST}:{backend_port}"