fix: gitea always uses nginx proxy for iframe compatibility

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

neode-ui/src/views/appSession/appSessionConfig.ts

@@ -51,7 +51,9 @@ export const APP_PORTS: Record<string, number> = {
 /** Apps that need nginx proxy for iframe embedding.
  *  IndeedHub loads via /app/indeedhub/ proxy for nostr-provider.js injection
  *  from the container's internal nginx so iframe works on all servers. */
-export const PROXY_APPS: Record<string, string> = {}
+export const PROXY_APPS: Record<string, string> = {
+  'gitea': '/app/gitea/',
+}
 
 /** Nginx proxy paths -- used on HTTPS to avoid mixed content (HTTPS parent + HTTP port iframe).
  *  On HTTP, direct port access is used instead (faster, no proxy). */