Add admin vision lab and LLM vision verification

.env.example

@@ -6,6 +6,7 @@ JWT_SECRET=replace-with-strong-secret
 VITE_APP_ID=tennis-training-hub
 OAUTH_SERVER_URL=
 OWNER_OPEN_ID=
+ADMIN_USERNAMES=H1
 BUILT_IN_FORGE_API_URL=
 BUILT_IN_FORGE_API_KEY=
 VITE_OAUTH_PORTAL_URL=