fix: onboarding persistence, clipboard, install UI, OnlyOffice removal, UI containers

Onboarding:
- Persist current step in localStorage — page refresh resumes where user was
- Router afterEach saves step; guard redirects to saved step, not always intro
- Show npub alongside DID on restore success screen

UI fixes:
- Clipboard polyfill for HTTP contexts (fixes Copy DID crash on non-HTTPS)
- AppCard installing overlay shows for pkg.state=installing (survives refresh)
- Hide uninstall button during installation
- Frontend version bumped to 1.3.2

App store:
- OnlyOffice fully removed from marketplace, curated apps, app config
- Replaced with CryptPad references throughout
- Remove OnlyOffice from ISO capture patterns

Container stability:
- UI containers (bitcoin-ui, lnd-ui, electrs-ui) pull from registry first
- Added --cap-add FOWNER for rootless Podman compatibility
- electrs-ui now included in first-boot loop alongside bitcoin-ui and lnd-ui

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

image-recipe/build-auto-installer-iso.sh

@@ -1055,7 +1055,7 @@ IMAGES_CAPTURED_FROM_SERVER=0
 if [ -n "$DEV_SERVER" ] && [ "$DEV_SERVER" != "localhost" ] && [ "$DEV_SERVER" != "127.0.0.1" ]; then
     echo "   Capturing container images from live server ($DEV_SERVER)..."
     # Patterns match against `podman images` repository names (not container names)
-    CAPTURE_PATTERNS="bitcoin-ui bitcoinknots lnd lnd-ui electrs-ui filebrowser mempool backend frontend electrs tailscale homeassistant home-assistant btcpayserver nbxplorer postgres alpine-tor nostr-rs-relay strfry fedimintd gatewayd dwn-server grafana uptime-kuma jellyfin vaultwarden searxng mariadb valkey nginx-alpine portainer photoprism nextcloud nginx-proxy-manager onlyoffice adguard"
+    CAPTURE_PATTERNS="bitcoin-ui bitcoinknots lnd lnd-ui electrs-ui filebrowser mempool backend frontend electrs tailscale homeassistant home-assistant btcpayserver nbxplorer postgres alpine-tor nostr-rs-relay strfry fedimintd gatewayd dwn-server vaultwarden searxng mariadb valkey nginx-alpine portainer nginx-proxy-manager adguard"
     REMOTE_TMP="/tmp/archipelago-image-capture-$$"
     SAVED_LIST=$(ssh "$DEV_SERVER" "mkdir -p $REMOTE_TMP && for p in $CAPTURE_PATTERNS; do img=\$(podman images --format '{{.Repository}}:{{.Tag}}' 2>/dev/null | grep -i \"\$p\" | head -1); [ -n \"\$img\" ] && podman save -o \"$REMOTE_TMP/\$p.tar\" \"\$img\" 2>/dev/null && echo \"\$p\"; done" 2>/dev/null) || true
     for p in $SAVED_LIST; do