fix(ui): single-button lifecycle control with transitional labels

The app card and details view previously used a pair of Start/Stop
buttons whose labels were driven off isAppLoading(), a client-side
"I just clicked the button" flag. When the backend's graceful stop
took longer than the RPC round-trip (up to 600s on bitcoin-core),
the flag cleared while the container was still shutting down, the
UI flipped back to "Running" as soon as the next 10s scan saw the
still-alive container, and the user had no indication the stop was
still in flight.

Now that the backend flips PackageState to Stopping / Starting /
Restarting / Installing / Updating / Removing for the duration of
each lifecycle operation and the scan loop preserves those states,
the UI can drive its label off the container state itself. A single
full-width primary button replaces the Start/Stop pair. Its label,
color, and disabled state come from getAppVisualState(), which
collapses resting states (exited/created/paused/installed) into
"stopped" and passes transitional states through untouched.

Changes:

- container-client.ts: widen ContainerStatus.state union to include
  the six transitional variants plus "installed". Add
  restartContainer() calling the new container-restart RPC.
- stores/container.ts: add getAppVisualState() computed and the
  restartContainer() action.
- ContainerApps.vue: single primary button (Start / Stop / Starting
  / Stopping / Restarting etc.) plus a separate circular Restart
  button visible only when running. Critically, handleStartApp and
  handleStopApp now route through store.startContainer and
  stopContainer (which call container-start / container-stop, the
  async RPCs) instead of the legacy synchronous bundled-app-start /
  bundled-app-stop path. Transitional-state polling widened from
  just "created" to the full set of transitional variants.
- ContainerAppDetails.vue: same single-button pattern, Restart
  button now calls container-restart instead of the old
  stop-sleep-start sequence, added 2s polling interval for
  transitional states.
- components/ContainerStatus.vue: widen state prop to match the
  shared union, render transitional labels with a trailing ellipsis
  and a yellow dot.

No new tests — this is presentation logic. Manual verification on
.228 will confirm the end-to-end async path: click Stop on LND,
button becomes "Stopping" in under a second, stays that way for
roughly 5 minutes, then flips to "Start" with a grey dot. The UI
must never revert to "Running" mid-stop.

neode-ui/src/components/ContainerStatus.vue

@@ -33,7 +33,20 @@
 import { computed } from 'vue'
 
 interface Props {
-  state: 'created' | 'running' | 'stopped' | 'exited' | 'paused' | 'unknown'
+  state:
+    | 'created'
+    | 'running'
+    | 'stopped'
+    | 'exited'
+    | 'paused'
+    | 'unknown'
+    | 'stopping'
+    | 'starting'
+    | 'restarting'
+    | 'installing'
+    | 'updating'
+    | 'removing'
+    | 'installed'
   health?: 'healthy' | 'unhealthy' | 'unknown' | 'starting'
 }
 
@@ -49,8 +62,15 @@ const statusClass = computed(() => {
       return 'bg-green-400'
     case 'stopped':
     case 'exited':
+    case 'installed':
       return 'bg-gray-400'
     case 'paused':
+    case 'starting':
+    case 'stopping':
+    case 'restarting':
+    case 'installing':
+    case 'updating':
+    case 'removing':
       return 'bg-yellow-400'
     default:
       return 'bg-red-400'
@@ -63,8 +83,15 @@ const textClass = computed(() => {
       return 'text-green-400'
     case 'stopped':
     case 'exited':
+    case 'installed':
       return 'text-gray-400'
     case 'paused':
+    case 'starting':
+    case 'stopping':
+    case 'restarting':
+    case 'installing':
+    case 'updating':
+    case 'removing':
       return 'text-yellow-400'
     default:
       return 'text-red-400'
@@ -83,6 +110,20 @@ const statusText = computed(() => {
       return 'Paused'
     case 'created':
       return 'Created'
+    case 'installed':
+      return 'Installed'
+    case 'starting':
+      return 'Starting…'
+    case 'stopping':
+      return 'Stopping…'
+    case 'restarting':
+      return 'Restarting…'
+    case 'installing':
+      return 'Installing…'
+    case 'updating':
+      return 'Updating…'
+    case 'removing':
+      return 'Removing…'
     default:
       return 'Unknown'
   }