Remove auto-tag, document manual tagging
Summary
- Remove
auto-tagCI job — CI_JOB_TOKEN can push tags but can't trigger a pipeline for them (by design), and the tags API is read-only for job tokens - Update CLAUDE.md with manual tagging instructions and a reminder to push a tag after merging version bumps
Test plan
- CI pipeline should pass (no more auto-tag job to fail)
- After merge, manually tag and push to verify release flow