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/math-intrinsics/abs.js

@@ -0,0 +1,4 @@
+'use strict';
+
+/** @type {import('./abs')} */
+module.exports = Math.abs;

claude-code-source/node_modules/math-intrinsics/floor.js

@@ -0,0 +1,4 @@
+'use strict';
+
+/** @type {import('./floor')} */
+module.exports = Math.floor;

claude-code-source/node_modules/math-intrinsics/isNaN.js

@@ -0,0 +1,6 @@
+'use strict';
+
+/** @type {import('./isNaN')} */
+module.exports = Number.isNaN || function isNaN(a) {
+	return a !== a;
+};

claude-code-source/node_modules/math-intrinsics/max.js

@@ -0,0 +1,4 @@
+'use strict';
+
+/** @type {import('./max')} */
+module.exports = Math.max;

claude-code-source/node_modules/math-intrinsics/min.js

@@ -0,0 +1,4 @@
+'use strict';
+
+/** @type {import('./min')} */
+module.exports = Math.min;

claude-code-source/node_modules/math-intrinsics/pow.js

@@ -0,0 +1,4 @@
+'use strict';
+
+/** @type {import('./pow')} */
+module.exports = Math.pow;

claude-code-source/node_modules/math-intrinsics/round.js

@@ -0,0 +1,4 @@
+'use strict';
+
+/** @type {import('./round')} */
+module.exports = Math.round;

claude-code-source/node_modules/math-intrinsics/sign.js

@@ -0,0 +1,11 @@
+'use strict';
+
+var $isNaN = require('./isNaN');
+
+/** @type {import('./sign')} */
+module.exports = function sign(number) {
+	if ($isNaN(number) || number === 0) {
+		return number;
+	}
+	return number < 0 ? -1 : +1;
+};