fix(rerun): emit partial stdout on TimeoutError in single-FE rerun --wait

src/commands/test.rerun.spec.ts

@@ -4820,38 +4820,51 @@ describe('rerun --wait — dashboardUrl on terminal output', () => {
 });
 
 // ---------------------------------------------------------------------------
-// Batch --all --wait fan-out: RequestTimeoutError must not leave stdout empty
+// TimeoutError on single FE rerun --wait: partial stdout + exit 7
 // ---------------------------------------------------------------------------
 
-describe('[finding-5] batch rerun --wait: RequestTimeoutError during fan-out poll writes JSON stdout + exit 7', () => {
-  it('stdout contains accepted[] with runIds when member polls throw RequestTimeoutError', async () => {
+describe('[finding-4] single FE rerun --wait: TimeoutError writes partial JSON to stdout', () => {
+  it('exit 7 AND stdout contains {runId, status:"running"} when --timeout polling deadline is exceeded', async () => {
     const creds = makeCreds();
-    const batchResp: BatchRerunResponse = {
-      accepted: [
-        { testId: 'test_1', runId: 'run_b1', enqueuedAt: '2026-06-03T10:00:00.000Z' },
-        { testId: 'test_2', runId: 'run_b2', enqueuedAt: '2026-06-03T10:00:00.000Z' },
-      ],
-      deferred: [],
-      conflicts: [],
-      closure: { byProject: [] },
-    };
-    const fetchImpl = makeFetch(url => {
-      if (url.includes('/tests/batch/rerun')) {
-        return { status: 202, body: batchResp };
+    const rerunResp = makeFeRerunResp();
+
+    let fetchCallCount = 0;
+    const fetchImpl: typeof globalThis.fetch = async (input, _init) => {
+      const url =
+        typeof input === 'string'
+          ? input
+          : input instanceof URL
+            ? input.toString()
+            : (input as { url: string }).url;
+      fetchCallCount++;
+      if (url.includes('/tests/test_fe_01/runs/rerun')) {
+        return new Response(JSON.stringify(rerunResp), {
+          status: 202,
+          headers: { 'content-type': 'application/json' },
+        });
       }
       if (url.includes('/runs/')) {
-        throw new RequestTimeoutError(120000, 'req_timeout_batch_rerun');
+        const runningRun: RunResponse = {
+          ...makeTerminalRun(rerunResp.runId, 'passed'),
+          status: 'running',
+          finishedAt: null,
+        };
+        return new Response(JSON.stringify(runningRun), {
+          status: 200,
+          headers: { 'content-type': 'application/json' },
+        });
       }
-      return errorBody('NOT_FOUND');
-    });
+      return new Response(JSON.stringify({ error: { code: 'NOT_FOUND' } }), { status: 404 });
+    };
+
     const stdoutLines: string[] = [];
 
     const err = await runTestRerun(
       {
-        testIds: ['test_1', 'test_2'],
+        testIds: ['test_fe_01'],
         all: false,
         wait: true,
-        timeoutSeconds: 60,
+        timeoutSeconds: 0,
         autoHeal: false,
         autoHealExplicit: false,
         skipDependencies: false,
@@ -4873,11 +4886,10 @@ describe('[finding-5] batch rerun --wait: RequestTimeoutError during fan-out pol
 
     expect(err).toMatchObject({ exitCode: 7 });
     expect(stdoutLines.length).toBeGreaterThan(0);
-    const parsed = JSON.parse(stdoutLines.join('\n')) as {
-      accepted: Array<{ testId: string; runId: string; status: string }>;
-    };
-    expect(parsed.accepted).toHaveLength(2);
-    expect(parsed.accepted.map(r => r.runId).sort()).toEqual(['run_b1', 'run_b2']);
-    expect(parsed.accepted.every(r => r.status === 'timeout')).toBe(true);
+    const parsed = JSON.parse(stdoutLines.join('\n')) as { runId: string; status: string };
+    expect(parsed.runId).toBe(rerunResp.runId);
+    expect(parsed.status).toBe('running');
+
+    void fetchCallCount;
   });
 });

src/commands/test.ts

@@ -6974,6 +6974,18 @@ export async function runTestRerun(
     } catch (err) {
       if (err instanceof TimeoutError) {
         ticker.finalize(`Run ${rerunResp.runId} — timed out after ${opts.timeoutSeconds}s`);
+        // Mirror the RequestTimeoutError path: emit a partial run to stdout so
+        // JSON consumers and AI agents can grab the runId and chain into
+        // `testsprite test wait <runId>` without parsing the stderr error envelope.
+        const timeoutPartial = { runId: rerunResp.runId, status: 'running' as const };
+        out.print(timeoutPartial, data => {
+          const p = data as typeof timeoutPartial;
+          return [
+            `runId       ${p.runId}`,
+            `status      ${p.status} (timed out after ${opts.timeoutSeconds}s)`,
+            `hint        Re-attach with: testsprite test wait ${p.runId}`,
+          ].join('\n');
+        });
         throw ApiError.fromEnvelope({
           error: {
             code: 'UNSUPPORTED',