fix: production onboarding, CI tests, container security, keyboard nav

Install & Onboarding:
- Remove DEV_MODE=true from production ISO service file (auto-created
  users, skipped password setup)
- Auto-install no longer overwrites rootfs service file with bad template
- Login.vue always checks auth.isSetup — shows password creation form
  on fresh install without requiring dev build flag
- Deploy image-versions.sh to /opt/archipelago/scripts/ on installed nodes
- First-boot-containers sources image-versions.sh, runs podman as
  archipelago user (rootless), enables linger + podman.socket
- Correct volume ownership (100000:100000 for rootless UID mapping)

Container Security:
- FileBrowser: add --cap-add=DAC_OVERRIDE for rootless podman volume access
- FileBrowser: add --read-only, /data volume for database, proper cmd args
- First-boot script matches backend config (security hardening + health check)

CI Pipeline:
- Add vue-tsc type check + vitest run to build-iso.yml (runs every push)
- Add post-install-tests.yml workflow (workflow_dispatch, SSH to target)
- Build report: set +eo pipefail, fix rootfs path, add || true guards
- Bundle run-post-install-tests.sh into ISO

E2E Test Suite (scripts/run-post-install-tests.sh):
- Phase 1: Install verification (files, services, podman, linger, DEV_MODE check)
- Phase 2: Onboarding flow (auth.isSetup, auth.setup, login, DID, complete)
- Phase 3: Container lifecycle (install 3 apps via package.install RPC,
  verify running, stop, verify stopped, restart, verify running, health)
- Phase 4: Log verification (first-boot log, diagnostics, journal errors)
- Correct package.install params: {"id", "dockerImage"}

Frontend:
- Fix backdrop-filter tab-switch bug (keep animations paused during rebuild)
- Dashboard glitch animations paused during tab-hidden
- Gamepad nav: auto-focus first container on route change
- Tab roving: Left/Right on role="tab" cycles and activates sibling tabs
- ContainerApps: data-controller-launch on running app cards
- 515 tests passing (fixed 30 broken, added 19 new keyboard nav tests)

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

neode-ui/src/views/Home.vue

@@ -12,6 +12,7 @@
       <!-- Desktop: tabs inline with header -->
       <div
         v-if="!uiMode.isChat"
+        role="tablist"
         class="hidden md:flex mode-switcher flex-shrink-0 transition-opacity duration-500"
         :class="{ 'opacity-0 pointer-events-none': showWelcomeBlock && !animateCards }"
       >
@@ -48,8 +49,8 @@
     <template v-if="!uiMode.isChat">
       <!-- Mobile: full-width tabs -->
       <div
-        class="md:hidden mode-switcher mb-6 w-full transition-opacity duration-500"
         role="tablist"
+        class="md:hidden mode-switcher mb-6 w-full transition-opacity duration-500"
         :class="{ 'opacity-0 pointer-events-none': showWelcomeBlock && !animateCards }"
       >
         <button class="mode-switcher-btn" role="tab" :aria-selected="homeTab === 'dashboard'" :class="{ 'mode-switcher-btn-active': homeTab === 'dashboard' }" @click="homeTab = 'dashboard'">{{ t('home.dashboardTab') }}</button>