feat: bitcoin-ui CSS fix, HTTPS proxy support, deploy script improvements

Bitcoin UI:
- Replace cdn.tailwindcss.com with locally bundled tailwind.css (CSP blocks external scripts)
- Make all asset paths relative for nginx proxy compatibility
- Add bitcoin-ui build/deploy to deploy-to-target.sh (was missing entirely)
- Use --network host (bitcoin-ui proxies Bitcoin RPC at 127.0.0.1:8332)

HTTPS mixed content fix:
- Add HTTPS_PROXY_PATHS in AppSession.vue — when parent page is HTTPS,
  iframe loads through nginx proxy instead of direct HTTP port
- Prevents browser blocking HTTP iframes inside HTTPS pages
- All Tailscale servers use HTTPS, this was breaking all app iframes

Deploy & first-boot improvements:
- first-boot-containers.sh auto-detects disk size for pruning vs txindex
- first-boot-containers.sh checks fallback source path for UI containers
- Added mempool-electrs to APP_PORTS mapping
- ElectrumX container creation in first-boot
- Podman doctor/fix/uptime skills added

Also includes: session persistence, identity management, LND transactions,
ElectrumX status UI, nostr-provider improvements, Web5 enhancements

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

neode-ui/src/views/AppDetails.vue

@@ -526,8 +526,9 @@ const ROUTE_TO_PACKAGE_KEY: Record<string, string> = {
   'uptime-kuma': 'uptime-kuma',
   tailscale: 'tailscale',
   indeedhub: 'indeedhub',
-  electrs: 'mempool-electrs',
-  'mempool-electrs': 'mempool-electrs',
+  electrumx: 'electrumx',
+  electrs: 'electrumx',
+  'mempool-electrs': 'electrumx',
 }
 
 /** Backend may register under variant container names */
@@ -536,7 +537,7 @@ const PACKAGE_ALIASES: Record<string, string[]> = {
   nextcloud: ['nextcloud-aio', 'nextcloud-server'],
   'mempool-web': ['archy-mempool-web'],
   indeedhub: ['indeedhub-build_app_1'],
-  electrs: ['mempool-electrs', 'archy-electrs'],
+  electrumx: ['mempool-electrs', 'electrs', 'archy-electrs'],
 }
 
 function resolvePackageKey(routeId: string): string {