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/@smithy/util-config-provider/dist-cjs/index.js

@@ -0,0 +1,30 @@
+'use strict';
+
+const booleanSelector = (obj, key, type) => {
+    if (!(key in obj))
+        return undefined;
+    if (obj[key] === "true")
+        return true;
+    if (obj[key] === "false")
+        return false;
+    throw new Error(`Cannot load ${type} "${key}". Expected "true" or "false", got ${obj[key]}.`);
+};
+
+const numberSelector = (obj, key, type) => {
+    if (!(key in obj))
+        return undefined;
+    const numberValue = parseInt(obj[key], 10);
+    if (Number.isNaN(numberValue)) {
+        throw new TypeError(`Cannot load ${type} '${key}'. Expected number, got '${obj[key]}'.`);
+    }
+    return numberValue;
+};
+
+exports.SelectorType = void 0;
+(function (SelectorType) {
+    SelectorType["ENV"] = "env";
+    SelectorType["CONFIG"] = "shared config entry";
+})(exports.SelectorType || (exports.SelectorType = {}));
+
+exports.booleanSelector = booleanSelector;
+exports.numberSelector = numberSelector;