diff --git a/.ciagent/CHECKPOINT.json b/.ciagent/CHECKPOINT.json
index 189a97d..7063331 100644
--- a/.ciagent/CHECKPOINT.json
+++ b/.ciagent/CHECKPOINT.json
@@ -1,17 +1,19 @@
 {
-  "phase": 2,
+  "phase": 3,
   "stage": "complete",
   "milestone": "v1.27",
-  "phase_role": "execution",
+  "phase_role": "final",
   "attempts": 0,
-  "updated_at": "2026-08-19T05:15:00Z",
+  "updated_at": "2026-08-19T05:30:00Z",
   "project": "acdl",
   "projects": ["acdl", "nova-blockchain-exchange"],
   "active_milestone": "v1.27",
   "milestone_branch": "milestone/v1.27-po-state-catalog",
-  "phase_branch": "phase/02-fix-stale-wire",
+  "phase_branch": "phase/03-final-review-ship",
   "tag_line": "v1.26.x",
-  "current_phase": {"phase": 2, "tag": "v1.26.2", "status": "complete"},
-  "previous_phase": {"phase": 1, "tag": "v1.26.1", "status": "complete"},
-  "notes": "v1.27 P2 complete. PROJECT.md + ROADMAP.md phase-status fixed (P3/P4/P5 complete, v1.25.5 shipped). STATE.md wired into PLAN.md + NORTH_STAR.md + ROADMAP.md P5 ship-update lists. archive/README.md updated with 8 archived files. 0 active dangling references. Next: P3 final-review-ship."
+  "current_phase": {"phase": 3, "tag": "v1.26.3", "status": "complete"},
+  "previous_phase": {"phase": 2, "tag": "v1.26.2", "status": "complete"},
+  "milestone_complete": true,
+  "milestone_release": {"tag": "v1.26.3", "type": "nfr"},
+  "notes": "v1.27 COMPLETE. NFR milestone (PO State Catalog & Ciagent Compression). 3 phases. STATE.md authored (32 CAPs, 11 invariants, 10 domains). 8 files archived (7 platform + 1 consumer). PROJECT.md + ROADMAP.md v1.26 phase-status fixed. STATE.md wired into P-final ship discipline. Review: 0 P0. Audit: reconstruction PASS, file discipline CLEAN, branch hygiene CLEAN, commit discipline CLEAN (13/13 ---ci--- blocks). Next run starts a new milestone."
 }
\ No newline at end of file
diff --git a/.ciagent/ROADMAP.md b/.ciagent/ROADMAP.md
index daf93c6..aefd463 100644
--- a/.ciagent/ROADMAP.md
+++ b/.ciagent/ROADMAP.md
@@ -81,6 +81,19 @@
   before building the new env). New `core/env_transition.py` module.
   15 requirements (REQ-276..290), 4 phases.
 
+- **v1.27:** complete (tag `v1.26.3`) — PO State Catalog & Ciagent
+  Compression. NFR milestone. Authored `.ciagent/STATE.md` (PO-facing
+  capability catalog, 32 CAP rows + 11 invariants across 10 domains,
+  backfilled through v1.26). Archived 7 platform-root files + 1
+  consumer file to `.ciagent/archive/` (CAPABILITY_INVENTORY,
+  REVIEW-AUDIT-P05, VERIFY-P03, VERIFY-P04, P4-PILOT-RUN-EVIDENCE,
+  AUTONOMY_THESIS, COST + nova-blockchain-exchange/ROADMAP). Fixed
+  PROJECT.md + ROADMAP.md v1.26 phase-status (P3/P4/P5 → complete).
+  Wired STATE.md into the P-final ship discipline (PLAN.md, ROADMAP.md,
+  NORTH_STAR.md). Active `.ciagent/` root: 15 .md (was 25) + 1 json + 1
+  checkpoint. 3 phases (P0 pre-execution + P1 author-archive + P2
+  fix-stale-wire + P3 final-review-ship). No REQ-NNN (NFR).
+
 > **Full v1.0–v1.24 phase detail, wave ordering, success criteria, and
 > decision cross-references:** `.ciagent/archive/ROADMAP-v1.0-v1.24.md`.
 
diff --git a/.ciagent/STATE.md b/.ciagent/STATE.md
index ddc10d3..4c0b537 100644
--- a/.ciagent/STATE.md
+++ b/.ciagent/STATE.md
@@ -11,8 +11,10 @@
 > *why*, read `NORTH_STAR.md`. For *how*, read `ARCHITECTURE.md`. For
 > *what was decided*, read `PROJECT.md` load-bearing decisions.
 >
-> **Last milestone ship:** v1.26 (`v1.25.5`, 2026-08-19).
-> **Next update:** at v1.27 ship.
+> **Last milestone ship:** v1.27 (`v1.26.3`, 2026-08-19) — PO State Catalog
+> & Ciagent Compression NFR milestone. No new capabilities this
+> milestone (NFR); v1.27 authored this file + compressed `.ciagent/`.
+> **Next update:** at v1.28 ship.
 
 ## How to use this file (PO)