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>

neode-ui/src/main.ts

@@ -4,6 +4,24 @@ import './style.css'
 import App from './App.vue'
 import router from './router'
 import i18n from './i18n'
+
+// Clipboard polyfill for HTTP (non-secure) contexts where navigator.clipboard is unavailable
+if (!navigator.clipboard) {
+  Object.defineProperty(navigator, 'clipboard', {
+    value: {
+      async writeText(text: string) {
+        const ta = document.createElement('textarea')
+        ta.value = text
+        ta.style.cssText = 'position:fixed;opacity:0'
+        document.body.appendChild(ta)
+        ta.select()
+        document.execCommand('copy')
+        document.body.removeChild(ta)
+      },
+      async readText() { return '' },
+    },
+  })
+}
 import { useToast } from '@/composables/useToast'
 
 const app = createApp(App)