docs(P00): clarify — v1.28 ambiguities resolved (6 Qs + 5 grounding gaps, D-226..D-231)

---ci---
project: acdl
phase: 0
milestone: v1.28
status: clarify
---/ci---

.ciagent/CHECKPOINT.json

@@ -1,10 +1,10 @@
 {
   "phase": 0,
-  "stage": "specify",
+  "stage": "clarify",
   "milestone": "v1.28",
   "phase_role": "pre_execution",
   "attempts": 0,
-  "updated_at": "2026-08-19T20:00:00Z",
+  "updated_at": "2026-08-19T20:10:00Z",
   "project": "acdl",
   "projects": ["acdl", "nova-blockchain-exchange"],
   "active_milestone": "v1.28",
@@ -12,5 +12,6 @@
   "phase_branch": "phase/00-pre-execution",
   "tag_line": "v1.27.x",
   "previous_milestone": {"milestone": "v1.27", "tag": "v1.26.3", "status": "complete"},
-  "notes": "v1.28 SPECIFY. Re-mapped from source spec (v1.18 framing) to v1.28. ID allocations: REQ-323..353, CAP-033..038, INV-12..17, D-226..231. kj engine mapped to kyverno-json (D-227). Requirements validated in REQUIREMENTS.md. Next: CLARIFY."
+  "decisions": ["D-226", "D-227", "D-228", "D-229", "D-230", "D-231"],
+  "notes": "v1.28 CLARIFY. 6 open Qs + 5 grounding gaps resolved at full autonomy. D-226..D-231 authored (confidence >= 0.80). kj mapped to kyverno-json (D-227). Cognito-drop reframed as greenfield (G3). CAP-033..038, INV-12..17, REQ-323..353 allocated. Next: RESEARCH."
 }