feat(ccw): migrate backend to TypeScript

- Convert 40 JS files to TypeScript (CLI, tools, core, MCP server)
- Add Zod for runtime parameter validation
- Add type definitions in src/types/
- Keep src/templates/ as JavaScript (dashboard frontend)
- Update bin entries to use dist/
- Add tsconfig.json with strict mode
- Add backward-compatible exports for tests
- All 39 tests passing

Breaking changes: None (backward compatible)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

ccw/tests/codex-lens-integration.test.js

@@ -16,7 +16,7 @@ const __filename = fileURLToPath(import.meta.url);
 const __dirname = dirname(__filename);
 
 // Import the codex-lens module
-const codexLensPath = new URL('../src/tools/codex-lens.js', import.meta.url).href;
+const codexLensPath = new URL('../dist/tools/codex-lens.js', import.meta.url).href;
 
 describe('CodexLens Full Integration Tests', async () => {
   let codexLensModule;