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.
Replace inconsistent hash-comment separators (using `# ` prefix with
spaces) with a uniform dash-based style across the CI pipeline YAML
file, and add a `*.bak*` glob to the project's `.gitignore` to exclude
backup files from version control.
Add full CI workflow for Nimcheck with lint, test matrix across Nim versions, build, and coverage jobs. Introduce workflow_dispatch trigger, concurrency control, and shared environment variable for Nim version. Enhance job documentation with detailed comments explaining pipeline structure and purpose.
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.
