feat(tests): on-hold button with reason modal, Jira comment + On Hold transition

frontend/src/api/tests.ts

@@ -236,6 +236,20 @@ export async function assignTest(
   return data;
 }
 
+// ── On Hold ────────────────────────────────────────────────────────
+
+/** Place a test on hold with a mandatory reason. */
+export async function holdTest(testId: string, reason: string): Promise<Test> {
+  const { data } = await client.post<Test>(`/tests/${testId}/hold`, { reason });
+  return data;
+}
+
+/** Resume a test that was placed on hold. */
+export async function resumeTest(testId: string): Promise<Test> {
+  const { data } = await client.post<Test>(`/tests/${testId}/resume`);
+  return data;
+}
+
 // ── Timeline ───────────────────────────────────────────────────────
 
 /** Get the audit-log timeline for a test. */