修复 Trellis 空闲态治理检查（07-26-trellis-upgrade-project-audit）

server/tests/unit/scripts/check-trellis-governance.test.js

@@ -24,4 +24,11 @@ describe("Trellis context manifest governance", () => {
       rejectSeedRows: true,
     });
   });
+
+  it("accepts the idle state after the last active task is archived", () => {
+    expect(governance.activeTaskDirectoryPolicy(0)).toEqual({
+      valid: true,
+      detail: "0 active task directories; idle state after archive is valid",
+    });
+  });
 });