feat(upgrade): The project has been fully upgraded and previous errors have been fixed.

[RlxChap2]

Summary

Hardened Bonyan-API for production and open-source readiness after the Etha3a rename.

Motivation

This PR completes the project rename, fixes reliability issues found during review, improves deployment/monitoring behavior, and adds the missing OSS governance files needed for contributors, maintainers, and potential sponsors.

Changes

• Completed Bonyan-API naming across metadata, headers, and root API response.
• Fixed line-ending consistency with .gitattributes and project-wide formatting.
• Added /ready and /metrics endpoints.
• Added cache stats, max cache entries, and optional stale-while-revalidate support.
• Added upstream request metrics recording.
• Improved error responses with stable error.code and requestId.
• Prevented leaking raw upstream errors to API clients.
• Fixed prayer fallback so pray.zone is used only for same-day coordinate requests.
• Corrected apiName values for jsDelivr and local Qibla fallback sources.
• Added configurable CORS_ORIGIN, TRUST_PROXY, LOG_LEVEL, and CACHE_MAX_ENTRIES.
• Moved tooling-only packages out of production dependencies.
• Improved Dockerfile for production installs and non-root runtime.
• Consolidated CI into one workflow using pnpm@10.33.4.
• Switched CI linting from auto-fix mode to pnpm lint:check.
• Added OpenAPI spec.
• Added OSS project files:
  • CONTRIBUTING.md
  • SECURITY.md
  • CODE_OF_CONDUCT.md
  • SUPPORT.md
  • ROADMAP.md
  • CHANGELOG.md
  • SOURCES.md
  • .github/FUNDING.yml
  • GitHub issue templates
• Updated README with monitoring endpoints, environment variables, OpenAPI link, and contribution references.

Testing

• Ran pnpm exec prettier --check ..
• Ran pnpm lint:check.
• Ran pnpm build.
• Ran pnpm test.
• Manually verified local /health, /ready, and /metrics.

Notes

• Docker build was not run locally because Docker is not installed on the machine.
• Many files changed only because line endings were normalized from CRLF to LF and headers were updated to Bonyan-API.
• MIT License applies.