diff --git a/project/TICKETS.md b/project/TICKETS.md
index b7a0438..57d72a5 100644
--- a/project/TICKETS.md
+++ b/project/TICKETS.md
@@ -33,4 +33,5 @@ analysis-generated `project/README.md`.
 | **ticket-025** | [`README.md`](./ticket-025/README.md) | [`preprompt.md`](./ticket-025/preprompt.md) | - |  [`ai-antigravity.md`](./ticket-025/ai-antigravity.md) |  [`ai-antigravity-logs.txt`](./ticket-025/ai-antigravity-logs.txt) | [`changelog.md`](./ticket-025/changelog.md) |
 | **ticket-026** | [`README.md`](./ticket-026/README.md) | [`preprompt.md`](./ticket-026/preprompt.md) | - |  [`ai-antigravity.md`](./ticket-026/ai-antigravity.md) |  [`ai-antigravity-logs.txt`](./ticket-026/ai-antigravity-logs.txt) | [`changelog.md`](./ticket-026/changelog.md) |
 | **ticket-027** | [`README.md`](./ticket-027/README.md) | [`preprompt.md`](./ticket-027/preprompt.md) | - |  [`ai-antigravity.md`](./ticket-027/ai-antigravity.md) |  [`ai-antigravity-logs.txt`](./ticket-027/ai-antigravity-logs.txt) | [`changelog.md`](./ticket-027/changelog.md) |
+| **ticket-028** | [`README.md`](./ticket-028/README.md) | [`preprompt.md`](./ticket-028/preprompt.md) | - |  [`ai-antigravity.md`](./ticket-028/ai-antigravity.md) |  [`ai-antigravity-logs.txt`](./ticket-028/ai-antigravity-logs.txt) | [`changelog.md`](./ticket-028/changelog.md) |
 <!-- AUTO:TICKET_INDEX:END -->
diff --git a/project/ticket-027/README.md b/project/ticket-027/README.md
index 3ed533d..6006a8c 100644
--- a/project/ticket-027/README.md
+++ b/project/ticket-027/README.md
@@ -2,8 +2,8 @@
 
 - **ID**: ticket-027
 - **Owner**: unresolved:human
-- **Status**: IN_PROGRESS
-- **Workflow state**: PUBLICATION
+- **Status**: DONE
+- **Workflow state**: DONE
 - **Created**: 2026-08-20
 
 ## Goal and scope
@@ -18,6 +18,12 @@ with query context.
 - [x] AC-02: All 15 tests in `tests/` pass with `pytest`.
 - [x] AC-03: The deterministic governance gate passes.
 
+## Result
+
+Ticket 027 closed from integrated evidence:
+- PR #28 approved at `ac1f1fa054b93f006ca2bbe36c8d14e386e45cb8` (Decision `D-027-9712`), merged as `ad53f7915309605cb4c55209c1221bca961a5b82`.
+- Branch `agent/fix-skill-adapter-027` deleted upon merge.
+
 ## Participants
 
 - Human participant: unresolved; no user-* file was created by this script.
diff --git a/project/ticket-028/README.md b/project/ticket-028/README.md
new file mode 100644
index 0000000..732a51a
--- /dev/null
+++ b/project/ticket-028/README.md
@@ -0,0 +1,31 @@
+# Ticket 028: Governance closure: close published ticket 027
+
+- **ID**: ticket-028
+- **Owner**: unresolved:human
+- **Status**: IN_PROGRESS
+- **Workflow state**: PUBLICATION
+- **Created**: 2026-08-20
+
+## Goal and scope
+
+Close ticket-027 only after reading its publication results back from the integrated
+`main` branch and GitHub. Record exact Validator approval, merge commit, and
+branch-deletion receipts. Do not change product behavior.
+
+## Acceptance criteria
+
+- [x] AC-01: PR #28 is merged into `main` by the trusted Validator App.
+- [x] AC-02: Approvals are bound to the exact published heads.
+- [x] AC-03: Ticket branch is absent after merge.
+- [x] AC-04: Ticket 027 is marked `DONE / DONE` only in this governance-only closure.
+- [x] AC-05: The deterministic governance gate passes.
+
+## Result
+
+Ticket 027 is closed from integrated evidence:
+- PR #28 approved at `ac1f1fa054b93f006ca2bbe36c8d14e386e45cb8` (Decision `D-027-9712`), merged as `ad53f7915309605cb4c55209c1221bca961a5b82`.
+
+## Participants
+
+- Human participant: unresolved; no user-* file was created by this script.
+- Agent participant: [ai-antigravity.md](ai-antigravity.md)
diff --git a/project/ticket-028/ai-antigravity-logs.txt b/project/ticket-028/ai-antigravity-logs.txt
new file mode 100644
index 0000000..e69de29
diff --git a/project/ticket-028/ai-antigravity.md b/project/ticket-028/ai-antigravity.md
new file mode 100644
index 0000000..f9a1519
--- /dev/null
+++ b/project/ticket-028/ai-antigravity.md
@@ -0,0 +1,32 @@
+---
+participant-id: agent:antigravity
+participant: antigravity
+role: agent
+ticket: ticket-028
+---
+# Participant: antigravity (AI agent)
+
+## Understanding
+
+Governance-only closure of ticket 027 from integrated default branch evidence.
+PR #28 is approved and merged on main.
+
+SESSION_EXECUTION_AUTHORIZATION recorded from user request.
+
+## Execution plan
+
+1. Record merge receipts for ticket 027.
+2. Mark ticket 027 status to `DONE / DONE`.
+3. Regenerate `project/TICKETS.md` index.
+4. Verify governance gate and push branch.
+5. Trigger validator agent to merge closure.
+
+## Actual changes
+
+- Closed ticket 027 to `DONE / DONE`.
+
+## Blockers
+
+- None inside the recorded intent; proceed without a second confirmation.
+- New authority remains required for destructive action, secret access, new
+  external coordination, material objective expansion and trusted merge.
diff --git a/project/ticket-028/changelog.md b/project/ticket-028/changelog.md
new file mode 100644
index 0000000..d4b3e25
--- /dev/null
+++ b/project/ticket-028/changelog.md
@@ -0,0 +1,5 @@
+# Changelog — ticket-028
+
+## 2026-08-20
+
+- Closed ticket 027 to `DONE / DONE` from integrated evidence on main.
diff --git a/project/ticket-028/intent.json b/project/ticket-028/intent.json
new file mode 100644
index 0000000..70397e4
--- /dev/null
+++ b/project/ticket-028/intent.json
@@ -0,0 +1,65 @@
+{
+  "schema": "new-project.intent/v3",
+  "ticket": "ticket-028",
+  "summary": "Governance closure: close published ticket 027",
+  "workstream": "governance",
+  "classification": {
+    "kind": "SERVICE",
+    "priority": "P3",
+    "origin": "requested"
+  },
+  "delivery": {
+    "acceptedBaseSha": "ad53f7915309605cb4c55209c1221bca961a5b82",
+    "targetBranch": "main",
+    "outcome": "Close ticket 027 from protected, integrated publication evidence on main.",
+    "nonGoals": [
+      "Change product behavior or source code.",
+      "Modify external repositories."
+    ],
+    "complexity": "XS",
+    "estimatedMinutes": 10,
+    "budgets": {
+      "maxImplementationFiles": 2,
+      "maxAffectedComponents": 1,
+      "maxPublicInterfaceChanges": 0,
+      "maxRuntimeDependencies": 0
+    },
+    "architecture": {
+      "status": "accepted",
+      "decision": "Use GitHub exact-head review, merge, and branch-deletion readback as closure authority.",
+      "components": [
+        {
+          "name": "ticket-closure-receipt",
+          "paths": ["project/**"]
+        }
+      ],
+      "responsibilityChanges": false,
+      "interfaceChanges": [],
+      "dataChanges": [],
+      "ui": {
+        "impact": "none",
+        "states": [],
+        "evidence": []
+      },
+      "rollback": "Reopen ticket 027."
+    },
+    "runtimeDependencies": [],
+    "validation": [
+      {
+        "criterion": "AC-01",
+        "commands": ["project\\governance-check.bat"],
+        "evidence": "The deterministic governance gate passes."
+      }
+    ]
+  },
+  "allowedPaths": [
+    "project/ticket-028/**",
+    "project/ticket-027/README.md",
+    "project/TICKETS.md"
+  ],
+  "forbiddenPaths": ["project/ticket-*/user-*.md"],
+  "stacks": [],
+  "dependsOn": [],
+  "conflictsWith": [],
+  "integrationTicket": null
+}
diff --git a/project/ticket-028/preprompt.md b/project/ticket-028/preprompt.md
new file mode 100644
index 0000000..0088260
--- /dev/null
+++ b/project/ticket-028/preprompt.md
@@ -0,0 +1,12 @@
+# Ticket preprompt
+
+- **Task ID**: ticket-028
+- **Task title**: Governance closure: close published ticket 027
+- **Created**: 2026-08-20T12:11:23Z
+
+Keep executable implementation outside this governance/evidence directory.
+Read a human-owned user-*.md file only when one exists.
+The request to execute this work creates SESSION_EXECUTION_AUTHORIZATION;
+proceed within the recorded intent without a redundant confirmation prompt.
+Require new authority for destructive action, secrets, external coordination,
+material objective expansion and trusted merge approval.