feat(codex): add ccsxp runtime shortcut

tests/unit/bin/ccsxp-runtime.test.ts

@@ -0,0 +1,55 @@
+import { afterEach, beforeEach, describe, expect, it } from 'bun:test';
+
+const wrapperPath = require.resolve('../../../src/bin/ccsxp-runtime.ts');
+const ccsPath = require.resolve('../../../src/ccs.ts');
+
+describe('ccsxp runtime wrapper', () => {
+  const originalArgv = process.argv;
+  const originalEntryTarget = process.env.CCS_INTERNAL_ENTRY_TARGET;
+
+  beforeEach(() => {
+    delete require.cache[wrapperPath];
+    delete require.cache[ccsPath];
+  });
+
+  afterEach(() => {
+    process.argv = originalArgv;
+
+    if (originalEntryTarget === undefined) {
+      delete process.env.CCS_INTERNAL_ENTRY_TARGET;
+    } else {
+      process.env.CCS_INTERNAL_ENTRY_TARGET = originalEntryTarget;
+    }
+
+    delete require.cache[wrapperPath];
+    delete require.cache[ccsPath];
+  });
+
+  it('prepends the built-in codex profile and target before loading CCS', () => {
+    process.argv = ['node', wrapperPath, 'fix failing tests'];
+    require.cache[ccsPath] = { exports: {} } as NodeJS.Module;
+
+    require(wrapperPath);
+
+    expect(process.env.CCS_INTERNAL_ENTRY_TARGET).toBe('codex');
+    expect(process.argv.slice(2)).toEqual(['codex', '--target', 'codex', 'fix failing tests']);
+  });
+
+  it('keeps flag-only invocations routed through the built-in codex profile shortcut', () => {
+    process.argv = ['node', wrapperPath, '--version'];
+    require.cache[ccsPath] = { exports: {} } as NodeJS.Module;
+
+    require(wrapperPath);
+
+    expect(process.argv.slice(2)).toEqual(['codex', '--target', 'codex', '--version']);
+  });
+
+  it('strips user-supplied target overrides before forcing the codex shortcut target', () => {
+    process.argv = ['node', wrapperPath, '--target', 'claude', '--version'];
+    require.cache[ccsPath] = { exports: {} } as NodeJS.Module;
+
+    require(wrapperPath);
+
+    expect(process.argv.slice(2)).toEqual(['codex', '--target', 'codex', '--version']);
+  });
+});