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/fileapi/symbols.js

@@ -0,0 +1,10 @@
+'use strict'
+
+module.exports = {
+  kState: Symbol('FileReader state'),
+  kResult: Symbol('FileReader result'),
+  kError: Symbol('FileReader error'),
+  kLastProgressEventFired: Symbol('FileReader last progress event fired timestamp'),
+  kEvents: Symbol('FileReader events'),
+  kAborted: Symbol('FileReader aborted')
+}