MegaLinter check

Collect the current MegaLinter errors and produce a compact error list that the megalinter-fix skill can consume.

Choose a mode

• Watch mode — a MegaLinter CI job exists for the current branch/PR (running or completed): parse its logs. No Docker needed.
• Local mode — no CI job available, or the user wants a pre-push check: run MegaLinter with Docker via npx mega-linter-runner.
• Targeted re-check (local, after fixes): re-run only the previously-failing linters in parallel standalone images.

Watch mode