Plugin load failures were caused by version mismatch between marketplace.json and individual plugin.json files: - contract-validator: 1.2.0 vs 1.1.0 - git-flow: 1.2.0 vs 1.0.0 - projman: 3.4.0 vs 3.3.0 - clarity-assist: 1.2.0 vs 1.0.0 - doc-guardian: 1.1.0 vs 1.0.0 Claude Code silently fails to load plugins when versions don't match. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>