Add CI/CD compliance files

Switch to API key auth as default, OAuth as optional

Remove check-setup as it is now done directly

Update README.md

Update README.md

Fix GitHub App naming in manual setup instructions

Simplify security audit requirement

Simplify security audit step

Update README to reflect new installation flow with security audit

Streamline installation with automated setup and security features

Update dependencies to latest versions

Update Claude Agent SDK to 0.1.5

Fix server binding for cloud deployments

Update to Claude Sonnet 4.5 model references

Finalise update