docs(milestone): complete v1.15 — Nova Rebrand (tag v1.15.4)

P5 final-review-ship complete: dual-read fallback removed (REQ-164) —
core/env.py NOVA-only, .env.secrets load paths NOVA-only (G-106 retired),
nova_tagging.py hard-fails any acdl:* tag, legacy ACDL_* Gitea secrets
deleted, ACDL_LIFECYCLE_MODE/ACDL_LOCAL_TIER/ACDL_HITL_* exports removed
from scripts, SNS subject → Nova SoD halt (P1-2), bootstrap scripts
NOVA-only. Review: 2 P0 auto-fixed (duplicate delenv), P1-1/P1-2 resolved,
doc-drift fixed. Audit: tags v1.15.0-4 exist; traceability REQ-155..164
all complete; ARCHITECTURE naming table matches codebase. 615 pytest PASS;
run_ci.sh 3-stage PASS. NOVA_MIGRATION.md marked COMPLETE.

---ci---
project: acdl
phase: 5
milestone: v1.15
status: complete
phase_role: final
requirements:
  covered: [REQ-155, REQ-156, REQ-157, REQ-158, REQ-159, REQ-160, REQ-161, REQ-162, REQ-163, REQ-164]
  partial: []
---/ci---

.ciagent/CHECKPOINT.json

@@ -1,11 +1,11 @@
 {
-  "phase": 4,
+  "phase": 5,
   "stage": "complete",
   "milestone": "v1.15",
-  "phase_role": "execution",
+  "phase_role": "final",
   "attempts": 0,
-  "updated_at": "2026-07-30T00:10:00Z",
-  "milestone_complete": false,
-  "requirements": ["REQ-163"],
+  "updated_at": "2026-07-30T00:11:00Z",
+  "milestone_complete": true,
+  "requirements": ["REQ-155", "REQ-156", "REQ-157", "REQ-158", "REQ-159", "REQ-160", "REQ-161", "REQ-162", "REQ-163", "REQ-164"],
   "tag": "v1.15.4"
 }

.ciagent/REQUIREMENTS.md

@@ -828,7 +828,7 @@ IDEATE-01..IDEATE-10, mapped to REQ-155..REQ-164.
 | REQ-161 | P3 | complete |
 | REQ-162 | P3 | complete |
 | REQ-163 | P4 | complete |
-| REQ-164 | P5 | pending |
+| REQ-164 | P5 | complete |
 
 ### Out of Scope (v1.15)
 - Renaming the real Gitea org/repo (`continuous-intelligence/acdl`) or

.ciagent/ROADMAP.md

@@ -1435,7 +1435,7 @@ After Phase P21: milestone COMPLETE — `v1.13.24` IS the v1.14 release.
 
 ---
 
-## v1.15 (active — Nova Rebrand, tag `v1.15.4`)
+## v1.15 (complete — Nova Rebrand, tag `v1.15.4`)
 
 A full rebrand from **ACDL** / "Agentic Cloud Delivery Platform" →
 **Nova** / "The New Dawn of DevSecOps — security as a seamless enabler
@@ -1620,7 +1620,7 @@ milestone release). (G-104 binding.)
   update REQUIREMENTS.md (REQ-155..164 marked complete), ROADMAP.md
   (v1.15 complete), PROJECT.md. Tag final patch `v1.14.5` (IS the
   milestone release). Merge `milestone/v1.15-nova` → `main`.
-- **Status:** in progress (branch `phase/05-final-review-ship`)
+- **Status:** complete (v1.15.4, milestone release)
 - **Depends on:** [P1-P4]
 - **Requirements:** REQ-164
 - **Success Criteria:**