v1.0.0

First release, by Louis Wright.

• Lints a declarative retention policy (YAML subset or JSON) with line numbers.
• Periods as ISO 8601 durations or " days|weeks|months|years"; indefinite retention flagged for personal data unless justified.
• Coverage: every category held in a system must have a rule; unknown categories/systems; unused categories.
• Conflicts and duplicates, max period and special-category max period, legal basis, expiry action, trigger, owner, review date.
• Text/JSON/SARIF/Markdown output, --fail-on, exit codes 0/1/2, allowlist with expiry, severity overrides.
• Composite GitHub Action with job summary.