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-crypto/util/build/isEmptyData.js

@@ -0,0 +1,13 @@
+"use strict";
+// Copyright Amazon.com Inc. or its affiliates. All Rights Reserved.
+// SPDX-License-Identifier: Apache-2.0
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.isEmptyData = void 0;
+function isEmptyData(data) {
+    if (typeof data === "string") {
+        return data.length === 0;
+    }
+    return data.byteLength === 0;
+}
+exports.isEmptyData = isEmptyData;
+//# sourceMappingURL=isEmptyData.js.map