fix: keep only source-map extracted node_modules, exclude pnpm artifacts

Restore node_modules to exact state from cli.js.map extraction:
- Move .ignored/ and .ignored_* files back to original package paths
- Remove pnpm symlinks (replaced by real source-map directories)
- Update .gitignore: only exclude /dist/, .pnpm/, .bin/, .ignored* dirs
- All package dist/ folders are now preserved as part of source-map files

After clone, run `pnpm install` to get pnpm-managed symlinks for building.
The committed node_modules contains the original TypeScript/JS source files
as bundled in cli.js.

claude-code-source/node_modules/undici/lib/web/websocket/symbols.js

@@ -0,0 +1,12 @@
+'use strict'
+
+module.exports = {
+  kWebSocketURL: Symbol('url'),
+  kReadyState: Symbol('ready state'),
+  kController: Symbol('controller'),
+  kResponse: Symbol('response'),
+  kBinaryType: Symbol('binary type'),
+  kSentClose: Symbol('sent close'),
+  kReceivedClose: Symbol('received close'),
+  kByteParser: Symbol('byte parser')
+}