fix(frontend): isolate swagger deps from main vendor chunk

Keep swagger-ui-react and its transitive dependencies in the lazy swagger chunk so the initial panel bundle stays smaller. This avoids eager loading the OpenAPI UI on first paint while keeping the API docs route unchanged.

frontend/vite.config.js

@@ -151,6 +151,57 @@ function makeBackendProxy(target) {
   };
 }
 
+// Deps only reachable through swagger-ui-react (verified via `npm ls`). The
+// catch-all `vendor` chunk would otherwise eager-load them on first paint,
+// although the api-docs page is the only lazy route importing them.
+const SWAGGER_ONLY_DEPS = [
+  '@babel/runtime-corejs3',
+  '@scarf/scarf',
+  '@swagger-api/apidom-',
+  '@swaggerexpert/',
+  'base64-js',
+  'buffer',
+  'classnames',
+  'css.escape',
+  'deep-extend',
+  'dompurify',
+  'fast-json-patch',
+  'highlight.js',
+  'highlightjs-vue',
+  'ieee754',
+  'immutable',
+  'js-file-download',
+  'js-yaml',
+  'lodash',
+  'lowlight',
+  'neotraverse',
+  'node-abort-controller',
+  'openapi-path-templating',
+  'openapi-server-url-templating',
+  'prismjs',
+  'prop-types',
+  'ramda',
+  'ramda-adjunct',
+  'randexp',
+  'react-copy-to-clipboard',
+  'react-debounce-input',
+  'react-immutable-proptypes',
+  'react-immutable-pure-component',
+  'react-inspector',
+  'react-redux',
+  'react-syntax-highlighter',
+  'redux',
+  'redux-immutable',
+  'remarkable',
+  'reselect',
+  'serialize-error',
+  'sha.js',
+  'url-parse',
+  'xml',
+  'xml-but-prettier',
+  'zenscroll',
+];
+
 export default defineConfig({
   plugins: [react(), injectBasePathPlugin(), rocketLoaderOptOutPlugin()],
   resolve: {
@@ -222,6 +273,7 @@ export default defineConfig({
             id.includes('/node_modules/swagger-ui-react/')
             || id.includes('/node_modules/swagger-ui/')
             || id.includes('/node_modules/swagger-client/')
+            || SWAGGER_ONLY_DEPS.some((dep) => id.includes(`/node_modules/${dep}/`))
           ) return 'vendor-swagger';
           if (id.includes('/node_modules/uplot/')) return 'vendor-uplot';
           if (id.includes('dayjs')) return 'vendor-dayjs';