Add compliance tooling and automation
Adds Docker, lint/format/dead-code tooling, Vitest coverage config, secret/dependency scanning, GitLab CI, pre-commit hooks, and Git-Cliff configuration for the compliance checker. README.md is unchanged.
Adds Docker, lint/format/dead-code tooling, Vitest coverage config, secret/dependency scanning, GitLab CI, pre-commit hooks, and Git-Cliff configuration for the compliance checker. README.md is unchanged.