docs(P00): create phase plans — v1.17 8 phases, 4 waves, deck rebuild plan (15+2 slides)

---ci---
project: acdl
phase: 0
milestone: v1.17
status: plan
---/ci---

.ciagent/CHECKPOINT.json

@@ -1,12 +1,12 @@
 {
   "phase": 0,
-  "stage": "ideate",
+  "stage": "plan",
   "milestone": "v1.17",
   "phase_role": "pre_execution",
   "attempts": 0,
-  "updated_at": "2026-08-04T20:30:00Z",
+  "updated_at": "2026-08-04T20:45:00Z",
   "milestone_complete": false,
   "tag": null,
   "requirements": ["REQ-185"],
-  "notes": "IDEATE complete. 15 enhancement ideas accepted (REQ-199..213), all additive within D-120..D-132. ~12-14% scope addition. REQUIREMENTS.md updated with new REQs + traceability. No locked decisions re-opened."
+  "notes": "PLAN complete. 8 phases (P1..P7 + P8 final), 4 waves. Deck rebuild plan: 15 main + 2 appendix slides, 5-act arc, per-slide benefit callouts, fluid transitions. 29 requirements (REQ-185..213) covered. Wave dependency graph + critical path documented."
 }