Localization (#1)

Implement comprehensive content localization, admin panels for editing each language, AI translation interface with automatic updates when base language version is changed.
- SEO tags for all language URLs
- Uses accept-language by default, ?lang=en overrides temporarily
- User edits patched on top of translations
- RTL language supportReviewed-on: #1

frontend/vite.config.js

@@ -16,7 +16,7 @@ const CONTENT_PROXY = '^(?!/_|/@|/src|/node_modules|/__).*$'
 // https://vite.dev/config/
 export default defineConfig({
   plugins: [
-    fastapiVue({ paths: ["/_api", "/_f", "/_themes", "/_fonts", "/_a"] }),
+    fastapiVue({ paths: ["/_api", "/_f", "/_themes", "/_fonts", "/_a", "/_translate"] }),
     vue(),
     vueDevTools(),
   ],