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/commander/index.js

@@ -0,0 +1,24 @@
+const { Argument } = require('./lib/argument.js');
+const { Command } = require('./lib/command.js');
+const { CommanderError, InvalidArgumentError } = require('./lib/error.js');
+const { Help } = require('./lib/help.js');
+const { Option } = require('./lib/option.js');
+
+exports.program = new Command();
+
+exports.createCommand = (name) => new Command(name);
+exports.createOption = (flags, description) => new Option(flags, description);
+exports.createArgument = (name, description) => new Argument(name, description);
+
+/**
+ * Expose classes
+ */
+
+exports.Command = Command;
+exports.Option = Option;
+exports.Argument = Argument;
+exports.Help = Help;
+
+exports.CommanderError = CommanderError;
+exports.InvalidArgumentError = InvalidArgumentError;
+exports.InvalidOptionArgumentError = InvalidArgumentError; // Deprecated