feat: cloud native file browser, settings Claude auth, deploy hardening

- Add native Cloud file browser with FileBrowser API integration
- Add cloud store, filebrowser-client, useAudioPlayer, useFileType composables
- Add Cloud components: FileGrid, FileCard, FileCardGrid, CloudToolbar
- Add Claude authentication section to Settings with OAuth status check
- Harden deploy script to preserve /aiui/ and claude-login.html
- Add nginx proxies for btcpay, homeassistant, filebrowser (HTTPS block)
- Add app configs for filebrowser, searxng, penpot in package.rs
- Update goal progress tracking with app aliases
- Improve mobile back button composable with ResizeObserver
- Update various views with cloud integration and UI refinements

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

neode-ui/src/composables/useMobileBackButton.ts

@@ -2,7 +2,7 @@ import { ref, computed, onMounted, onBeforeUnmount } from 'vue'
 
 /**
  * Composable for mobile back button positioning
- * Ensures back buttons are always 16px above the mobile tab bar
+ * Ensures back buttons are always 8px above the mobile tab bar
  * Uses ResizeObserver to reactively update when tab bar height changes
  */
 export function useMobileBackButton() {
@@ -10,13 +10,13 @@ export function useMobileBackButton() {
   
   // Computed property for bottom position - always 16px above tab bar
   const bottomPosition = computed(() => {
-    return `${tabBarHeight.value + 16}px`
+    return `${tabBarHeight.value + 8}px`
   })
   
   // Computed property for Tailwind class (for use in class bindings)
   const bottomClass = computed(() => {
     // Use Tailwind arbitrary value with the computed height
-    return `bottom-[${tabBarHeight.value + 16}px]`
+    return `bottom-[${tabBarHeight.value + 8}px]`
   })
   
   let resizeObserver: ResizeObserver | null = null