v1.6.5

Added

• scripts/check_version.py (run first): installs the pinned author-vetted idc-index minimum, then prints best-effort, notify-only notices when a newer idc-index (PyPI) or skill release (GitHub) is available — never auto-installs newer releases, silently skipped offline
• "Keeping the Skill Up to Date" section in USAGE.md (release notifications, per-surface update steps, fresh-conversation reminder); linked from README

Changed

• Replaced the inline startup version-check in SKILL.md with a prominent pointer to scripts/check_version.py, keeping the code out of the model's context
• Renamed repository references idc-claude-skill → imaging-data-commons-skill across SKILL.md, README.md, USAGE.md
• Pointed tests/test_snippets.py at the new script and added a guard that its MIN_VERSION/SKILL_VERSION match the SKILL.md frontmatter

Fixed

• Standardized the required idc-index on 0.12.3 (was 0.12.2 in the version-check vs 0.12.3 in frontmatter) and switched to numeric, not string, version comparison

What's Changed

• Add update notifications and rename repo references (v1.6.5) by @fedorov in #25
• Include CHANGELOG entry in release notes by @fedorov in #26

Full Changelog: v1.6.4...v1.6.5