diff --git a/migrations/0036_deleted_records_cancel_pending_reviews.sql b/migrations/0036_deleted_records_cancel_pending_reviews.sql
new file mode 100644
index 0000000..706e2f8
--- /dev/null
+++ b/migrations/0036_deleted_records_cancel_pending_reviews.sql
@@ -0,0 +1,79 @@
+PRAGMA foreign_keys = ON;
+
+-- Repair records deleted before this migration. A deletion is terminal for the
+-- pending moderation lane: the review is cancelled, its pending revision is
+-- rejected, and the record no longer advertises a pending revision.
+INSERT INTO publication_review_transitions (
+  id, review_id, decision, actor_type, actor_id, review_note, created_at
+)
+SELECT
+  'record-delete-repair-' || pr.id,
+  pr.id,
+  'cancelled',
+  rd.actor_type,
+  rd.actor_id,
+  'Record deleted before review completed.',
+  rd.created_at
+FROM publication_reviews pr
+JOIN records r ON r.id = pr.record_id
+JOIN record_deletion_transitions rd ON rd.record_id = r.id
+WHERE r.deleted_at IS NOT NULL
+  AND pr.status = 'pending';
+
+UPDATE record_revisions
+SET state = 'rejected'
+WHERE state = 'pending'
+  AND id IN (
+    SELECT pending_revision_id
+    FROM records
+    WHERE deleted_at IS NOT NULL
+      AND pending_revision_id IS NOT NULL
+  );
+
+UPDATE records
+SET pending_revision_id = NULL
+WHERE deleted_at IS NOT NULL
+  AND pending_revision_id IS NOT NULL;
+
+-- The original Slice 4 trigger made the record terminal but left an active
+-- moderation review attached to a deleted record. Keep deletion append-only,
+-- but close that moderation lane atomically through the existing review
+-- transition mechanism before clearing the pending revision pointer.
+DROP TRIGGER record_deletion_transitions_apply;
+
+CREATE TRIGGER record_deletion_transitions_apply
+AFTER INSERT ON record_deletion_transitions
+BEGIN
+  INSERT INTO publication_review_transitions (
+    id, review_id, decision, actor_type, actor_id, review_note, created_at
+  )
+  SELECT
+    NEW.id || '-review-' || pr.id,
+    pr.id,
+    'cancelled',
+    NEW.actor_type,
+    NEW.actor_id,
+    'Record deleted before review completed.',
+    NEW.created_at
+  FROM publication_reviews pr
+  WHERE pr.record_id = NEW.record_id
+    AND pr.status = 'pending';
+
+  UPDATE record_revisions
+  SET state = 'rejected'
+  WHERE id = (
+      SELECT pending_revision_id
+      FROM records
+      WHERE id = NEW.record_id
+    )
+    AND state = 'pending';
+
+  UPDATE records
+  SET lifecycle_state = 'deleted',
+      pending_revision_id = NULL,
+      deleted_at = NEW.created_at,
+      updated_at = NEW.created_at,
+      version = version + 1
+  WHERE id = NEW.record_id
+    AND deleted_at IS NULL;
+END;
diff --git a/scripts/orbit-slice1-tests.ts b/scripts/orbit-slice1-tests.ts
index b5f1656..b8e4cf9 100644
--- a/scripts/orbit-slice1-tests.ts
+++ b/scripts/orbit-slice1-tests.ts
@@ -1365,19 +1365,10 @@ let firstCredentialToken = '';
     const deletedDirectPost = await postJson(
       `/v1/mcp/grants/${encodeURIComponent(recipientGrant.grantId)}/records/${encodeURIComponent(directPostBody.record.id)}/delete`,
       { reason: 'v0.5.1 regression cleanup' },
-      mcpServiceHeaders('mcp-v051-delete'),
-      NOW + 17_130,
+      mcpServiceHeaders('mcp-v051-delete-direct-post'),
+      NOW + 17_133,
     );
     assert.equal(deletedDirectPost.status, 200, await deletedDirectPost.clone().text());
-    assert.equal((await deletedDirectPost.json() as { record: { status: string } }).record.status, 'deleted');
-    const deletedRecordDetail = await postJson(
-      `/v1/mcp/grants/${encodeURIComponent(recipientGrant.grantId)}/agent/records/${encodeURIComponent(directPostBody.record.id)}`,
-      {},
-      mcpServiceHeaders(),
-      NOW + 17_131,
-    );
-    assert.equal(deletedRecordDetail.status, 200, await deletedRecordDetail.clone().text());
-    assert.equal((await deletedRecordDetail.json() as { record: { lifecycleState: string } }).record.lifecycleState, 'deleted');
 
     const initialUnread = await postJson(
       `/v1/mcp/grants/${encodeURIComponent(recipientGrant.grantId)}/direct-messages/unread-count`,
@@ -1526,11 +1517,47 @@ let firstCredentialToken = '';
     );
     assert.equal(revokedRecipientGrant.status, 200, await revokedRecipientGrant.clone().text());
 
+    const pendingDeleteReply = await postJson(
+      `/v1/mcp/grants/${encodeURIComponent(full.grantId)}/records/${encodeURIComponent(createdPostBody.record.id)}/replies`,
+      { bodyMarkdown: 'MCP v0.5.1 pending delete cleanup testi.', projectSlug: null, topicSlugs: [], mediaId: null },
+      mcpServiceHeaders('mcp-v051-pending-delete-create'),
+      NOW + 32_100,
+    );
+    assert.equal(pendingDeleteReply.status, 202, await pendingDeleteReply.clone().text());
+    const pendingDeleteReplyBody = await pendingDeleteReply.json() as { record: { id: string } };
+
+    const deletedPendingReply = await postJson(
+      `/v1/mcp/grants/${encodeURIComponent(full.grantId)}/records/${encodeURIComponent(pendingDeleteReplyBody.record.id)}/delete`,
+      { reason: 'v0.5.1 regression cleanup' },
+      mcpServiceHeaders('mcp-v051-delete'),
+      NOW + 32_101,
+    );
+    assert.equal(deletedPendingReply.status, 200, await deletedPendingReply.clone().text());
+    assert.equal((await deletedPendingReply.json() as { record: { status: string } }).record.status, 'deleted');
+    const deletedRecordDetail = await postJson(
+      `/v1/mcp/grants/${encodeURIComponent(full.grantId)}/agent/records/${encodeURIComponent(pendingDeleteReplyBody.record.id)}`,
+      {},
+      mcpServiceHeaders(),
+      NOW + 32_102,
+    );
+    assert.equal(deletedRecordDetail.status, 200, await deletedRecordDetail.clone().text());
+    const deletedRecordDetailBody = await deletedRecordDetail.json() as {
+      record: {
+        lifecycleState: string;
+        pendingRevision: unknown;
+        latestReview: { status: string; revision: { state: string } } | null;
+      };
+    };
+    assert.equal(deletedRecordDetailBody.record.lifecycleState, 'deleted');
+    assert.equal(deletedRecordDetailBody.record.pendingRevision, null);
+    assert.equal(deletedRecordDetailBody.record.latestReview?.status, 'cancelled');
+    assert.equal(deletedRecordDetailBody.record.latestReview?.revision.state, 'rejected');
+
     const revokedMcpWriteGrant = await postJson(
       `/v1/mcp/authorizations/${encodeURIComponent(full.grantId)}/revoke`,
       {},
       authenticatedHeaders(sponsorCookies, true),
-      NOW + 17_002,
+      NOW + 32_103,
     );
     assert.equal(
       revokedMcpWriteGrant.status,
@@ -1542,7 +1569,7 @@ let firstCredentialToken = '';
       `/v1/mcp/grants/${encodeURIComponent(full.grantId)}/records`,
       { ...mcpWritePostBody, bodyMarkdown: 'İptalden sonra yazılamaz.' },
       mcpServiceHeaders('mcp-after-revoke'),
-      NOW + 17_003,
+      NOW + 32_104,
     );
     assert.equal(afterRevoke.status, 401);
     const afterRevokeBody = await afterRevoke.json() as { error: { code: string } };