fix: polish error handling across frontend views

- Server.vue: Add user feedback for disk cleanup and restart operations
- Credentials.vue: Add clipboard fallback, better identity load error handling
- Federation.vue: Add clipboard fallback for invite code copy
- ContainerApps.vue: Wrap polling intervals in try-catch to prevent
  unhandled promise rejections from background refresh

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

neode-ui/src/views/ContainerApps.vue

@@ -165,7 +165,7 @@
         </div>
 
         <div class="mb-4">
-          <ContainerStatus :state="container.state as any" />
+          <ContainerStatus :state="container.state" />
         </div>
 
         <div class="flex gap-2">
@@ -221,16 +221,24 @@ onMounted(async () => {
 
   // Refresh every 10 seconds
   setInterval(async () => {
-    await store.fetchContainers()
-    await store.fetchHealthStatus()
+    try {
+      await store.fetchContainers()
+      await store.fetchHealthStatus()
+    } catch {
+      // Background poll — ignore transient errors
+    }
   }, 10000)
 
   // When any bundled app is in 'created' (starting), poll every 2s so state updates to running
   startingPollInterval = setInterval(async () => {
     const anyStarting = bundledApps.value.some((app) => store.getAppState(app.id) === 'created')
     if (anyStarting) {
-      await store.fetchContainers()
-      await store.fetchHealthStatus()
+      try {
+        await store.fetchContainers()
+        await store.fetchHealthStatus()
+      } catch {
+        // Background poll — ignore transient errors
+      }
     }
   }, 2000)
 })
@@ -343,7 +351,7 @@ async function handleStartApp(app: BundledApp) {
   try {
     await store.startBundledApp(app)
   } catch (e) {
-    console.error('Failed to start app:', e)
+    if (import.meta.env.DEV) console.error('Failed to start app:', e)
   }
 }
 
@@ -351,7 +359,7 @@ async function handleStopApp(appId: string) {
   try {
     await store.stopBundledApp(appId)
   } catch (e) {
-    console.error('Failed to stop app:', e)
+    if (import.meta.env.DEV) console.error('Failed to stop app:', e)
   }
 }
 
@@ -360,7 +368,7 @@ async function handleStartContainer(name: string) {
     const appId = name.replace('archipelago-', '').replace('-dev', '')
     await store.startContainer(appId)
   } catch (e) {
-    console.error('Failed to start container:', e)
+    if (import.meta.env.DEV) console.error('Failed to start container:', e)
   }
 }
 
@@ -369,7 +377,7 @@ async function handleStopContainer(name: string) {
     const appId = name.replace('archipelago-', '').replace('-dev', '')
     await store.stopContainer(appId)
   } catch (e) {
-    console.error('Failed to stop container:', e)
+    if (import.meta.env.DEV) console.error('Failed to stop container:', e)
   }
 }
 </script>