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/@aws-sdk/util-utf8-browser/dist-cjs/index.js

@@ -0,0 +1,9 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.toUtf8 = exports.fromUtf8 = void 0;
+const pureJs_1 = require("./pureJs");
+const whatwgEncodingApi_1 = require("./whatwgEncodingApi");
+const fromUtf8 = (input) => typeof TextEncoder === "function" ? (0, whatwgEncodingApi_1.fromUtf8)(input) : (0, pureJs_1.fromUtf8)(input);
+exports.fromUtf8 = fromUtf8;
+const toUtf8 = (input) => typeof TextDecoder === "function" ? (0, whatwgEncodingApi_1.toUtf8)(input) : (0, pureJs_1.toUtf8)(input);
+exports.toUtf8 = toUtf8;