Fix TypeScript build errors for Docker deployment

- Add ImportMeta and ImportMetaEnv type declarations to env.d.ts
- Fix typo: INDEEHHUB_API → INDEEDHUB_API in indeeHubApi.ts
- Fix nostr-tools Filter type usage in subscribeToContent
- Remove unused Filter import and userPrivkey parameter
- Increase Workbox maximumFileSizeToCacheInBytes to 10MB for large images
- Build now succeeds with 43 precached entries (81.98 MB)

Co-authored-by: Cursor <cursoragent@cursor.com>

vite.config.ts

@@ -27,6 +27,7 @@ export default defineConfig({
         ]
       },
       workbox: {
+        maximumFileSizeToCacheInBytes: 10 * 1024 * 1024, // 10 MB limit
         globPatterns: ['**/*.{js,css,html,ico,png,svg,jpg,jpeg,woff,woff2,otf}'],
         runtimeCaching: [
           {