Summary

• Rewrites the root AGENTS.md as the Codex startup router and tightens subdirectory navigation cards for core, api, utils, tests, docs, lite, and .github.
• Aligns Bitable rate_limit_delay defaults/examples to 0.01 across config.example.yaml, mainline config generation, legacy Bitable, docs, and tests.
• Revalidates formatting with the same Black 26.3.1 version used by CI.

Validation

• pytest tests/ -v -m "not integration" --tb=short --cov=core --cov=api --cov=utils --cov-report=term
• pytest tests/test_config.py tests/test_reader.py -v
• ruff check . --ignore E501,F401
• black --check . with Black 26.3.1
• mypy core/ api/ utils/ --ignore-missing-imports
• python -m py_compile XTF.py core/.py api/.py utils/*.py
• python -m py_compile lite/*.py
• git diff --check
• parsed config.example.yaml and confirmed rate_limit_delay=0.01