fix(orchestrator,ui): stop crash-looping orphan stack members; dedupe Electrum launch overlay

- crash_recovery.rs: stack boot/runtime recovery (immich/indeedhub/netbird) now
  requires the stack's core dependency container to exist before touching any
  sibling, instead of firing on any leftover container. Fixes an infinite
  120s-interval crash loop where orphan debris from a partial/failed install
  (indeedhub-api with no indeedhub-postgres ever created) was repeatedly
  force-restarted against a dependency that doesn't exist, which also blocked
  a real reinstall via container name conflicts.
- AppSessionFrame.vue: the generic app-loading overlay and the ElectrumX
  sync-in-progress overlay could render simultaneously (same z-index) during
  launch. The sync screen is strictly more informative, so it now takes
  precedence instead of the two stacking on top of each other.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

neode-ui/src/views/appSession/AppSessionFrame.vue

@@ -1,7 +1,12 @@
 <template>
   <div class="relative flex-1 min-h-0 bg-black/40 overflow-hidden app-session-frame-safe">
     <Transition name="content-fade">
-      <AppLoadingScreen v-if="loading" :icon="appIcon" :title="appTitle" :progress="loadProgress" />
+      <!-- Suppressed while the ElectrumX sync overlay below is showing — both
+           conditions can be true at once during launch (generic loader fires
+           first, then sync status arrives), and the sync screen is strictly
+           more informative, so it takes precedence instead of the two
+           rendering on top of each other. -->
+      <AppLoadingScreen v-if="loading && !(electrsSync && !electrsSync.stale)" :icon="appIcon" :title="appTitle" :progress="loadProgress" />
     </Transition>
 
     <!-- ElectrumX sync screen — shown before the real UI while the on-chain