diff --git a/src/resources/extensions/gsd/tests/auto-remediate-slice-status.test.ts b/src/resources/extensions/gsd/tests/auto-remediate-slice-status.test.ts
new file mode 100644
index 000000000..552096d00
--- /dev/null
+++ b/src/resources/extensions/gsd/tests/auto-remediate-slice-status.test.ts
@@ -0,0 +1,56 @@
+/**
+ * Regression test for #3673 — auto-remediate stale slice DB status
+ *
+ * When complete-slice fails after writing SUMMARY.md but before calling
+ * updateSliceStatus(), the DB stays stale and the post-unit check
+ * previously reported this as a "rogue" artifact, causing infinite
+ * re-dispatch. The fix calls updateSliceStatus() to sync the DB.
+ *
+ * This structural test verifies updateSliceStatus is imported and called
+ * in the complete-slice branch of auto-post-unit.ts.
+ */
+
+import { describe, test } from 'node:test';
+import assert from 'node:assert/strict';
+import { readFileSync } from 'node:fs';
+import { fileURLToPath } from 'node:url';
+import { dirname, join } from 'node:path';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = dirname(__filename);
+
+const source = readFileSync(join(__dirname, '..', 'auto-post-unit.ts'), 'utf-8');
+
+describe('auto-remediate stale slice status (#3673)', () => {
+  test('updateSliceStatus is imported from gsd-db', () => {
+    assert.match(source, /import\s*\{[^}]*updateSliceStatus[^}]*\}\s*from\s*["']\.\/gsd-db/,
+      'updateSliceStatus should be imported from gsd-db');
+  });
+
+  test('updateSliceStatus is called with "complete" status', () => {
+    assert.match(source, /updateSliceStatus\(mid,\s*sid,\s*["']complete["']/,
+      'updateSliceStatus should be called with "complete" status');
+  });
+
+  test('remediation is wrapped in try-catch for fallback to rogue detection', () => {
+    // The updateSliceStatus call should be in a try block with a catch
+    // that falls back to rogues.push
+    const updateIdx = source.indexOf('updateSliceStatus(mid, sid');
+    assert.ok(updateIdx > 0, 'updateSliceStatus call should exist');
+
+    // Find surrounding try-catch
+    const before = source.slice(Math.max(0, updateIdx - 200), updateIdx);
+    assert.match(before, /try\s*\{/,
+      'updateSliceStatus should be inside a try block');
+
+    const after = source.slice(updateIdx, updateIdx + 300);
+    assert.match(after, /catch/,
+      'try block should have a catch for fallback');
+  });
+
+  test('rogue detection still exists as fallback', () => {
+    // rogues.push should appear in the catch block
+    assert.match(source, /rogues\.push\(\{.*path:\s*summaryPath/,
+      'rogues.push fallback should still exist');
+  });
+});