Add STATUS.md (what's done, verification, future work), GITEA.md (act_runner,
master branch policy, pipeline), and CONTRIBUTING.md (dev guide, new language
checklist). Update README for all 28 validators, docs index, and project tree.
Align Gitea Actions with master as default branch; add PR and issue templates.
Expand .gitignore for debug artifacts and test binaries.
These files were deleted as they are no longer relevant to the project's current state. CONTRIBUTING.md contained outdated contribution guidelines, and LESSONS_LEARNED.md held a postmortem analysis that is now archived elsewhere. The README.md was updated to reflect their removal from the directory listing.
Rename the entire project from "Validatrix" to "Nimcheck" in README.md, Makefile, LESSONS_LEARNED.md, and all source references; add initial Gitea CI workflow with lint, test, and build jobs for Nim 2.0.0; expand .gitignore with comprehensive patterns for Nim, Python, editor, environment, and temporary files; add CONTRIBUTING.md and LICENSE (MIT) files to establish project governance and licensing.
