[P4 Task 9.1] E2E GitHub Projects critical path tests #476
Description
Plan 09, Wave 5. CREATE packages/cli/tests/e2e/github-projects.test.ts.
5 tests: ensureProjectBoard, findProject idempotency, addItem+moveStatus, listProjectItems, moveToStatus(Done). Use deleteProject in afterAll.
Verify: cd packages/cli && npx vitest run --config vitest.e2e.config.ts tests/e2e/github-projects.test.ts