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/@azure/msal-node/dist/internals.mjs

@@ -0,0 +1,14 @@
+/*! @azure/msal-node v3.8.1 2025-10-29 */
+'use strict';
+export { Serializer } from './cache/serializer/Serializer.mjs';
+export { Deserializer } from './cache/serializer/Deserializer.mjs';
+
+/*
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License.
+ */
+/**
+ * Warning: This set of exports is purely intended to be used by other MSAL libraries, and should be considered potentially unstable. We strongly discourage using them directly, you do so at your own risk.
+ * Breaking changes to these APIs will be shipped under a minor version, instead of a major version.
+ */
+//# sourceMappingURL=internals.mjs.map