reconstruct and build @anthropic-ai/claude-code source from source map

- Extract 4756 source files from cli.js.map (57MB)
- Set up Bun build system with bun:bundle feature flag shim
- Configure 90+ compile-time feature flags matching production defaults
- Inject MACRO constants (VERSION, BUILD_TIME, etc.)
- Create stubs for private packages (color-diff-napi, modifiers-napi, etc.)
- Install all public dependencies via pnpm
- Patch commander v14 to allow multi-char short flags (-d2e)
- Build output: dist/cli.js (22MB), verified working

claude-code-source/node_modules/.ignored/proper-lockfile/index.js

@@ -0,0 +1,40 @@
+'use strict';
+
+const lockfile = require('./lib/lockfile');
+const { toPromise, toSync, toSyncOptions } = require('./lib/adapter');
+
+async function lock(file, options) {
+    const release = await toPromise(lockfile.lock)(file, options);
+
+    return toPromise(release);
+}
+
+function lockSync(file, options) {
+    const release = toSync(lockfile.lock)(file, toSyncOptions(options));
+
+    return toSync(release);
+}
+
+function unlock(file, options) {
+    return toPromise(lockfile.unlock)(file, options);
+}
+
+function unlockSync(file, options) {
+    return toSync(lockfile.unlock)(file, toSyncOptions(options));
+}
+
+function check(file, options) {
+    return toPromise(lockfile.check)(file, options);
+}
+
+function checkSync(file, options) {
+    return toSync(lockfile.check)(file, toSyncOptions(options));
+}
+
+module.exports = lock;
+module.exports.lock = lock;
+module.exports.unlock = unlock;
+module.exports.lockSync = lockSync;
+module.exports.unlockSync = unlockSync;
+module.exports.check = check;
+module.exports.checkSync = checkSync;