fix: resolve CI/CD workflow failures

- Simplified CI workflow to use basic npm ci, npm run build, npm test steps
- Ensured package.json contains all required dependencies
- Added package-lock.json for reproducible npm ci builds
- All source files and tests are present in repository

.gitignore

@@ -4,6 +4,5 @@ dist/
 *.log
 .DS_Store
 coverage/
-.nyc_output/
+.turbo/
 *.tsbuildinfo
-.agent-workspaces/