docs(P00): grill — 3 revisions applied (PROCEED-WITH-REVISIONS, 0.85)

8 axes reviewed. 5 PASS, 3 REVISE. Overall: PROCEED-WITH-REVISIONS.
Revisions (binding):
1. P5 test_png_aspect_ratios_sane scoped to only PNGs referenced in
   the current marp deck (15/19 legacy PNGs are out of bounds but
   unused — would cause false failures).
2. P1 @import rejection documented (default theme padding insufficient
   for header/footer; conflicts with S&P palette).
3. P2 marp version pinning fallback (if pinned version breaks, fall
   back to @latest + log assumption A5).

---ci---
project: acdl
phase: 0
milestone: v1.22
status: grill
---/ci---

.ciagent/CHECKPOINT.json

@@ -1,12 +1,12 @@
 {
   "phase": 0,
-  "stage": "research",
+  "stage": "plan",
   "milestone": "v1.22",
   "phase_role": "pre_execution",
   "attempts": 0,
-  "updated_at": "2026-08-11T14:35:00Z",
+  "updated_at": "2026-08-11T14:38:00Z",
   "milestone_complete": false,
   "tag": null,
   "requirements": ["REQ-254","REQ-255","REQ-256","REQ-257","REQ-258","REQ-259","REQ-260","REQ-261","REQ-262"],
-  "notes": "v1.22 RESEARCH complete. 8 findings persisted to RESEARCH.md. Persona roster updated (2 active: lead-developer + backend-engineer; 2 deactivated: frontend + data). D-148, D-149 logged."
+  "notes": "v1.22 PLAN complete. 7 phases, 4 waves. Plan persisted to PLAN.md. Tags on v1.21.x line."
 }