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/@mixmark-io/domino/lib/UIEvent.js

@@ -0,0 +1,19 @@
+"use strict";
+var Event = require('./Event');
+
+module.exports = UIEvent;
+
+function UIEvent() {
+  // Just use the superclass constructor to initialize
+  Event.call(this);
+  this.view = null; // FF uses the current window
+  this.detail = 0;
+}
+UIEvent.prototype = Object.create(Event.prototype, {
+  constructor: { value: UIEvent },
+  initUIEvent: { value: function(type, bubbles, cancelable, view, detail) {
+    this.initEvent(type, bubbles, cancelable);
+    this.view = view;
+    this.detail = detail;
+  }}
+});