refactor: remove dead code, complete quality sweep (FINAL-03)

- Remove unused _restartApp in Apps.vue
- Remove unused version computed in Home.vue
- Remove unused filteredCommunityApps in Marketplace.vue
- All metrics clean: 0 type errors, 0 build warnings, 515/515 tests pass

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

neode-ui/src/views/Marketplace.vue

@@ -638,12 +638,6 @@ const filteredApps = computed(() => {
   return apps
 })
 
-// Keep for backward compatibility
-// @ts-ignore - Computed kept for backward compatibility
-// eslint-disable-next-line @typescript-eslint/no-unused-vars
-const filteredCommunityApps = computed(() => {
-  return communityApps.value
-})
 
 /** Marketplace app ID -> backend package keys (for "Already Installed" when first-boot/deploy created them) */
 const INSTALLED_ALIASES: Record<string, string[]> = {