Fix remaining knip issues for pnpm migration

- Restore @babel/runtime and mini-css-extract-plugin to ignoreDependencies
  (still needed for webpack build detection)
- Add disableHttp2 export to ignore list (test-only utility in worker.ts)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: justin808

knip.ts

@@ -79,6 +79,8 @@ const config: KnipConfig = {
         // Test helper utilities
         'tests/helper.ts',
         'tests/httpRequestUtils.ts',
+        // Test-only exports used for test setup (disableHttp2 is used in tests/worker.test.ts)
+        'src/worker.ts:disableHttp2',
       ],
       ignoreDependencies: [
         // Optional dependencies used in integrations
@@ -174,6 +176,10 @@ const config: KnipConfig = {
         '@rescript/react',
         // The Babel plugin fails to detect it
         'babel-plugin-transform-react-remove-prop-types',
+        // Required by @babel/plugin-transform-runtime for polyfills (used in webpack build)
+        '@babel/runtime',
+        // Used in webpack server config to filter out MiniCssExtractPlugin
+        'mini-css-extract-plugin',
         // This one is weird. It's long-deprecated and shouldn't be necessary.
         // Probably need to update the Webpack config.
         'node-libs-browser',