fix: WebSocket reconnect state refresh, listener leak fixes, pin container images

- F4: Fetch fresh server state after WebSocket reconnect
- F5: Guard message polling timer with auth check, stop on logout
- F6: Remove NIP-07 listener in appLauncher close()
- F7: Initialize audio player once to prevent listener stacking
- S3: Pin all container images to specific versions, create image-versions.sh

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

neode-ui/src/composables/useMessageToast.ts

@@ -54,10 +54,21 @@ export function useMessageToast() {
     }
   }
 
+  function isAuthenticated(): boolean {
+    return localStorage.getItem('neode-auth') === 'true'
+  }
+
   function startPolling() {
     if (pollTimer) return
+    if (!isAuthenticated()) return
     loadReceivedMessages()
-    pollTimer = setInterval(loadReceivedMessages, MESSAGE_POLL_INTERVAL)
+    pollTimer = setInterval(() => {
+      if (!isAuthenticated()) {
+        stopPolling()
+        return
+      }
+      loadReceivedMessages()
+    }, MESSAGE_POLL_INTERVAL)
   }
 
   function stopPolling() {