docs(P00): create phase plans — v1.23 (7 phases, 5 waves)

Vertical-slice plan with wave ordering:
- Wave 1 (P1): consolidate-docs (single -marp.md, delete plain .md,
  speaker notes + talking points as HTML comments).
- Wave 2 (P2): restore-clean-style (theme:default + inline style,
  retire nova-sp-theme.css from render, benefit callout .benefit class).
- Wave 3 (P3 + P4, parallel): inline-images + python-pptx-generator
  (new scripts, zero deck-markdown overlap) || trim-wordcount + remove
  'penetrate' (deck markdown, zero script overlap).
- Wave 4 (P5): ci-tests-readme (workflows, tests, README — depends on
  all above).
- Wave 5 (P6): final review + audit + milestone ship.

Tags on v1.22.x line: v1.22.0 (P0) -> v1.22.1..v1.22.5 (P1-P5) ->
v1.22.6 (P6 final = milestone release).

---ci---
project: acdl
phase: 0
milestone: v1.23
status: plan
---/ci---

.ciagent/CHECKPOINT.json

@@ -1,6 +1,6 @@
 {
   "phase": 0,
-  "stage": "clarify",
+  "stage": "plan",
   "milestone": "v1.23",
   "phase_role": "pre_execution",
   "attempts": 0,