[ajianaz]

What

• A cora-ignore marker on a line that has findings but names none of them (typo, unknown rule, or explanation text that became part of the rule name) now prints a warning on stderr with the marker location, what it named and the rule ids on that line.
• -- ends the rule list: cora-ignore: sec-hardcoded-secret -- env var name suppresses the finding and keeps the reason in the source.
• Docs (Inline Suppression) and CHANGELOG updated.

Why

A suppression that silently does nothing makes people widen ignore.rules instead. Closes #679. Not done: warning about stale markers on clean lines (too noisy for diff reviews where only part of the file is visible); JSON/SARIF reporting of unmatched markers and a --strict-markers flag can follow.

Testing

• Unit tests: separator, trailing text, unknown rule, matching markers and clean-line markers not reported.
• 3 end-to-end tests in tests/inline_ignore.rs reproducing the issue (warning, finding kept; separator suppresses).
• fmt, clippy -D warnings and the full suite pass.