{
  "phase": 4,
  "stage": "complete",
  "milestone": "v1.22",
  "phase_role": "execution",
  "attempts": 0,
  "updated_at": "2026-08-11T15:00:00Z",
  "milestone_complete": false,
  "tag": "v1.21.4",
  "requirements": ["REQ-261"],
  "notes": "v1.22 P4 complete. Tag v1.21.4. 8 overflowing slides trimmed/split. Header removed from frontmatter. Slide count 18->20 main + 1 appendix. 23 slide tests pass. Proceeding to P5 (re-render + tests)."
}