diff --git a/.gstack/ship-policy.json b/.gstack/ship-policy.json
index 6831e8ac7..ad1b381fd 100644
--- a/.gstack/ship-policy.json
+++ b/.gstack/ship-policy.json
@@ -15,5 +15,5 @@
   "maintainers": ["garrytan"],
   "train": { "gate_workflow": "evals.yml", "free_workflow": "free-tests.yml", "full_gate_check": "gstack/full-gate", "record_artifact": "gstack-train-record", "max_size": 3, "fill_hours": 1, "screen_selection": "gstack-paid", "trial_reservation_usd": 1.5 },
   "changelog_fragments": { "dir": "changelog.d", "required_checks": ["free-tests", "windows-free-tests", "Check VERSION is not stale vs queue", "quality", "check-freshness", "actionlint"] },
-  "min_gstack_version": "1.91.336.0"
+  "min_gstack_version": "1.91.340.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6b7737c02..82ba20960 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,7 @@
 
 ## [Unreleased]
 
-**gstack now versions its own PRs at merge time: a PR adds `changelog.d/<branch-slug>.md` instead of a version, and trains merge through `train land` instead of slot calls.** `.gstack/ship-policy.json` turns `changelog_fragments` on with the checks every PR runs as `required_checks`, and `min_gstack_version` moves to 1.91.336.0, the release that introduced the key, so an older gstack refuses the file by name.
+**gstack now versions its own PRs at merge time: a PR adds `changelog.d/<branch-slug>.md` instead of a version, and trains merge through `train land` instead of slot calls.** `.gstack/ship-policy.json` turns `changelog_fragments` on with the checks every PR runs as `required_checks`, and `min_gstack_version` moves to 1.91.340.0, the first release that reads `required_checks` and counts a stamped slot as merged only when GitHub reports it MERGED, so an older gstack refuses the file by name.
 
 ### Changed
 - **`changelog_fragments` is on for gstack** (`.gstack/ship-policy.json`, `changelog.d/README.md`): `required_checks` lists `free-tests`, `windows-free-tests`, `Check VERSION is not stale vs queue`, `quality`, `check-freshness` and `actionlint`. Path-filtered workflows stay out of the list, because a stamp commit of a PR outside their paths never gets those checks.
@@ -13,8 +13,8 @@
 - **A stacked PR whose only own line sits inside its released parent's list merges its CHANGELOG instead of refusing** (`lib/changelog-check.ts`): `mergeChangelogs` filed the line as an addition to the parent's released entry and returned null, so #3613's slot needed a hand resolve. When that would leave the child nothing of its own, the inserted lines are now the child's entry; on #3613's real CHANGELOGs the result equals the resolve that shipped.
 
 ### Tests
-- `test/changelog-merge-damage.test.ts`: a child whose only own bullet sits at the top of the released parent's `### Changed` list keeps it as its entry and passes `ownEntryAboveMain`; a child with no line of its own stays null.
-- `test/gstack-ship-policy.test.ts`: every `required_checks` name is a job of a pull_request workflow without a path filter, and `min_gstack_version` equals the key's introducing version.
+- `test/changelog-merge-damage.test.ts`: a child whose only own bullet sits at the top of the released parent's `### Changed` list keeps it as its entry and passes `ownEntryAboveMain`; a child with no line of its own, a reordered parent bullet and a duplicated one stay null.
+- `test/gstack-ship-policy.test.ts`: every `required_checks` name is a check a pull_request workflow without a path filter reports (a job's `name:`, or its id when it has none), and `min_gstack_version` is at least the key's introducing version.
 
 ## [1.91.340.0] - 2026-10-30
 
diff --git a/docs/ship-policy.md b/docs/ship-policy.md
index 00434fd17..c08f4e986 100644
--- a/docs/ship-policy.md
+++ b/docs/ship-policy.md
@@ -92,7 +92,7 @@ hard-code:
   "history": "squash-ok",
   "stamp_sensitive_gates": ["tests"],
   "changelog_fragments": { "dir": "changelog.d", "required_checks": ["free-tests", "windows-free-tests", "Check VERSION is not stale vs queue", "quality", "check-freshness", "actionlint"] },
-  "min_gstack_version": "1.91.336.0"
+  "min_gstack_version": "1.91.340.0"
 }
 ```
 
@@ -104,8 +104,9 @@ every PR (branch protection enforces only `free-tests`); a workflow with a path
 filter (Windows Setup E2E, make-pdf gate, Native ARM Setup Smoke, Dependency
 Review) is left out, because a stamp commit of a PR outside its paths never
 gets that check and `train land` would hold on it. `min_gstack_version` is
-the release that introduced the key, so an older gstack refuses the file by
-name (`POLICY_GSTACK_TOO_OLD`).
+1.91.340.0, the first release that reads `required_checks` and counts a
+stamped slot as merged only when GitHub reports it MERGED, so an older gstack
+refuses the file by name (`POLICY_GSTACK_TOO_OLD`).
 
 `.gstack/ship-policy.example.json` shows every key set the way a serial-merge
 repo with a release script, docs mentions and a mirror would set them.
diff --git a/lib/changelog-check.ts b/lib/changelog-check.ts
index 0ddc8b901..e91fb227c 100644
--- a/lib/changelog-check.ts
+++ b/lib/changelog-check.ts
@@ -257,10 +257,12 @@ function fragments(removed: string, added: string): { old: string; new: string }
  * byte for byte main's. A line the child inserted between two of the parent's
  * lines counts as an addition to the parent's entry, unless that would leave
  * the child nothing of its own: then the inserted lines are the child's entry
- * (#3613 put its only bullet at the top of #3595's `### Changed` list). Null
- * when the shape is something else: no single `[Unreleased]` on our side, no
- * released entry of theirs the base lacks whose text our section holds, or
- * nothing of the child's own left either way.
+ * (#3613 put its only bullet at the top of #3595's `### Changed` list), and a
+ * line meant as an amendment to the parent lands there too. Null when the
+ * shape is something else: no single `[Unreleased]` on our side, no released
+ * entry of theirs the base lacks whose text our section holds, nothing of the
+ * child's own left either way, or a child entry that repeats a released
+ * parent line (a reordered or duplicated bullet is a hand resolve).
  */
 export function carryReleasedParent(ours: string, theirs: string, base: string): { text: string; notes: string[] } | null {
   return carryWith(ours, theirs, base, true) ?? carryWith(ours, theirs, base, false);
@@ -276,11 +278,13 @@ function carryWith(ours: string, theirs: string, base: string, insertsJoinParent
   const notes: string[] = [];
   const bullets: string[] = [];
   let carried = false;
+  const parentLines = new Set<string>();
   for (const parent of parseChangelog(theirs).sections.filter(s => !s.unreleased && !baseKeys.has(s.version!))) {
     const pl = parent.lines.slice(1);
     const ownBlocks = entryBlocks({ ...unreleased[0]!, lines: ['', ...lines] });
     if (!entryBlocks(parent).some(b => ownBlocks.includes(b))) continue;
     carried = true;
+    for (const l of pl) if (content(l)) parentLines.add(l);
     // LCS over content lines only: blanks and sub-headings recur in both entries and would anchor wrongly.
     const lcs = Array.from({ length: pl.length + 1 }, () => new Uint32Array(lines.length + 1));
     for (let i = pl.length - 1; i >= 0; i--) for (let j = lines.length - 1; j >= 0; j--) {
@@ -328,6 +332,7 @@ function carryWith(ours: string, theirs: string, base: string, insertsJoinParent
   });
   while (kept.length && !kept.at(-1)!.trim()) kept.pop();
   if (!kept.some(content)) return null;
+  if (kept.some(l => content(l) && parentLines.has(l))) return null;
   if (bullets.length) {
     const at = kept.findIndex(l => GATE_INTEGRITY_RE.test(l));
     if (at < 0) kept.push('', '### Gate integrity', ...bullets);
diff --git a/test/changelog-merge-damage.test.ts b/test/changelog-merge-damage.test.ts
index a7b226aa5..ec884a0b7 100644
--- a/test/changelog-merge-damage.test.ts
+++ b/test/changelog-merge-damage.test.ts
@@ -152,6 +152,9 @@ describe("a stacked child whose parent was released since the fork (GSTA-96, tra
     expect(merged).toBe(`# C\n\n## [Unreleased]\n\n### Changed\n- mine\n\n${released}\n## [1.0.0] - d\n\n- base\n`);
     expect(ownEntryAboveMain(merged, theirs, new Set(['### Changed', '- mine', '- one', '- two', '- new thing', '### Added', '**Parent paragraph.**']))).toBeNull();
     expect(carryReleasedParent('# C\n\n## [Unreleased]\n\n**Parent paragraph.**\n\n### Added\n- new thing\n\n### Changed\n- one\n- two\n\n## [1.0.0] - d\n\n- base\n', theirs, base)).toBeNull();
+    // A reordered or duplicated parent bullet is not the child's entry: it stays a hand resolve.
+    expect(mergeChangelogs('# C\n\n## [Unreleased]\n\n**Parent paragraph.**\n\n### Added\n- new thing\n\n### Changed\n- two\n- one\n\n## [1.0.0] - d\n\n- base\n', theirs, base)).toBeNull();
+    expect(mergeChangelogs('# C\n\n## [Unreleased]\n\n**Parent paragraph.**\n\n### Added\n- new thing\n\n### Changed\n- one\n- one\n- two\n\n## [1.0.0] - d\n\n- base\n', theirs, base)).toBeNull();
   });
 
   // Value: protects=carryReleasedParent rewrites only a child that still holds the released parent's entry and keeps an existing Gate integrity section's neighbours in place; fails_when=an unrelated [Unreleased] or an already-stamped head is rewritten or the correction lands outside Gate integrity; why_new=the shapes test above never has a child without the parent's entry, a head without [Unreleased], or a Gate integrity section followed by another heading; seam=none; no_claim=the wording of corrections beyond one edited line
diff --git a/test/gstack-ship-policy.test.ts b/test/gstack-ship-policy.test.ts
index 161524bfa..9463d8980 100644
--- a/test/gstack-ship-policy.test.ts
+++ b/test/gstack-ship-policy.test.ts
@@ -10,6 +10,7 @@ import { spawnSync } from 'node:child_process';
 import { EXIT } from '../lib/headless-artifacts';
 import { CHANGELOG_FRAGMENTS_KEY_VERSION, DEFAULT_POLICY, POLICY_KEYS, POLICY_KEY_INTRODUCED, REVIEW_SCOPE_KEY_VERSION, globToRegExp, matchesAny, validatePolicy } from '../lib/ship-policy';
 import { fillDue } from '../lib/ship-queue-train';
+import { cmpVersion, parseVersion } from '../lib/version-source';
 import { BASE_POLICY, cleanup, makeFixtureRepo, runBin, type FixtureRepo } from './helpers/restamp-fixture';
 
 const repos: FixtureRepo[] = [];
@@ -126,13 +127,13 @@ describe("gstack's own .gstack/ship-policy.json", () => {
     for (const wf of [raw.train.gate_workflow, raw.train.free_workflow]) expect(fs.existsSync(path.join(root, '.github/workflows', wf))).toBe(true);
   });
 
-  // Value: protects=train land on gstack itself: every changelog_fragments.required_checks name is a job of a pull_request workflow without a path filter, so a stamp commit always gets it; fails_when=a name is misspelled or names a path-filtered workflow's job, and train land holds every slot whose PR skips those paths; why_new=the key was off on gstack; seam=the policy file and .github/workflows; no_claim=that the checks pass
+  // Value: protects=train land on gstack itself: every changelog_fragments.required_checks name is a job of a pull_request workflow without a path filter, so a stamp commit always gets it; fails_when=a name is misspelled, names a path-filtered workflow's job, or names a job id GitHub reports under its `name:` instead, and train land holds every slot whose PR skips those paths; why_new=the key was off on gstack; seam=the policy file and .github/workflows; no_claim=that the checks pass
   test('turns changelog_fragments on with required checks every PR runs', () => {
     const root = path.join(import.meta.dir, '..');
     const raw = JSON.parse(fs.readFileSync(path.join(root, '.gstack', 'ship-policy.json'), 'utf8'));
     expect(raw.changelog_fragments.dir).toBe('changelog.d');
     expect(fs.existsSync(path.join(root, 'changelog.d', 'README.md'))).toBe(true);
-    expect(raw.min_gstack_version).toBe(CHANGELOG_FRAGMENTS_KEY_VERSION);
+    expect(cmpVersion(parseVersion(raw.min_gstack_version)!, parseVersion(CHANGELOG_FRAGMENTS_KEY_VERSION)!)).toBeGreaterThanOrEqual(0);
     const jobs = new Set<string>();
     for (const f of fs.readdirSync(path.join(root, '.github/workflows')).filter(f => f.endsWith('.yml'))) {
       const text = fs.readFileSync(path.join(root, '.github/workflows', f), 'utf8');
@@ -140,9 +141,8 @@ describe("gstack's own .gstack/ship-policy.json", () => {
       if (!/^\s+pull_request:/m.test(on) || /^\s+paths(-ignore)?:/m.test(on)) continue;
       const body = text.slice(text.search(/^jobs:/m));
       for (const m of body.matchAll(/^  ([A-Za-z0-9_-]+):\n((?:    .*\n|\s*\n)*)/gm)) {
-        jobs.add(m[1]!);
         const name = /^    name:\s*(.+)$/m.exec(m[2]!)?.[1]?.trim();
-        if (name) jobs.add(name);
+        jobs.add(name ?? m[1]!);
       }
     }
     expect(raw.changelog_fragments.required_checks.filter((n: string) => !jobs.has(n))).toEqual([]);