fix: harden reminders and state handling

src/main/games/registry.ts

@@ -87,6 +87,7 @@ export async function startGamesRegistry(): Promise<void> {
     await startGsiServer()
     log.info('[games] GSI server started on port 4701')
   } catch (err) {
+    running = false
     log.error('[games] GSI server failed to start', err)
     return
   }
@@ -119,7 +120,7 @@ export async function stopGamesRegistry(): Promise<void> {
   for (const id of Object.keys(providers) as GameId[]) {
     await providers[id].stop()
   }
-  stopGsiServer()
+  await stopGsiServer()
 }
 
 export async function listGamesStatus(): Promise<GameStatus[]> {