Stale researcher-OS baseline numbers in README.md and AGENTS.md

Labels: documentation, bug, good first issue

Several release-facing documents still quote the old v2.3.0 corpus-hardening baseline instead of the current v2.5.0 baseline: Claimed Actual 16 accepted mechanisms 22 in researcher/mechanisms/registry.jsonl 12 provenance-tracked claims 26 in researcher/claims/index.jsonl 19 activation cases 23 in researcher/fixtures/activation-cases.jsonl strict skill-health score 0.9117 0.9221 as of latest skill_health.py --strict run

Locations:

• README.md lines 275–279
• AGENTS.md line 28
• .plugin/plugin.json description CHANGELOG.md v2.5.0 already reports the correct numbers, so the other surfaces are out of sync.

Suggested fix:

• Update the three surfaces to 22 mechanisms / 26 claims / 23 cases / 0.9221 score.
• Optionally add a CI lint or script that warns when these numbers drift again.