给真机夹具加 restart 用例：回合进行中杀进程后部分历史与宿主事实

- direct-execution-production-fixture：新增 restart 场景（契约 → 部分助手文本 + 阻塞原生工具 → 工具真开始后 SIGTERM 杀进程），断言部分文本与工具卡片按顺序落盘、被杀工具卡片是最后一行且无回执行、账本不伪造成 completed/executorStopped
- 复验：completed,passes,mcp,mcp-write,native,deadline,restart 共 7/7 passed
- 变异验证：把"等 400ms 再杀"改成"等 20s"（让回合自然跑完）后同一条用例立即变红（AGC must be killed mid-turn）
- 记录事实：CLI/无前端宿主不写用户消息（GUI 由前端写），夹具断言据此只校验部分文本与工具卡片顺序
- 文档：DirectProject 里程碑补该轮核对与剩余 UI 侧边界；pitfalls 记 CLI 不写用户消息这一坑

apps/ai-game-creator-shell/scripts/direct-execution-production-fixture.mjs

@@ -150,6 +150,63 @@ async function readLedger(host) {
   return null;
 }
 
+/**
+ * `restart` 用例判据：回合进行中杀掉进程后
+ *  - 已落盘的用户消息、部分助手文本与工具卡片必须按原顺序保留；
+ *  - 宿主不得为这一轮伪造终态（不能出现最终助手消息，账本不能是 completed / executorStopped）。
+ * 对应的里程碑条款是「回合进行中终止并重启进程后重进项目：已落盘的部分文本与工具卡片按原顺序出现，
+ * 且界面不显示忙碌态」里**宿主侧可证的那一半**（界面渲染仍要真实客户端窗口）。
+ */
+async function assertRestartKeepsPartialHistory(project, ledger, exit) {
+  assert(
+    exit.code !== 0 || exit.signal,
+    'restart: AGC must be killed mid-turn, got ' + JSON.stringify(exit),
+  );
+  const history = await fs
+    .readFile(path.join(project, '.agent/conversations/project.jsonl'), 'utf8')
+    .catch(() => '');
+  const rows = history.split('\n').filter(Boolean);
+  const raw = rows.join('\n');
+  // 注意：CLI / 无前端宿主不写用户消息（GUI 是前端先调 append_direct_project_conversation_message），
+  // 所以这里只断言"部分文本 + 工具卡片按原顺序落盘"，用户消息的持久化属于 GUI 路径。
+  const order = ['RESTART-PARTIAL-TEXT', 'exec_command'].map((needle) =>
+    raw.indexOf(needle),
+  );
+  assert(
+    order.every((index) => index >= 0) && order[0] < order[1],
+    'restart: partial text and tool card must stay in order; got ' +
+      JSON.stringify({ order, rows: rows.length }),
+  );
+  assert(
+    !raw.includes('Fixture actions finished'),
+    'restart: killed turn must not fabricate the final assistant message',
+  );
+  // 被杀的工具卡片必须是最后一条：既证明卡片已落盘，也证明它没有产生任何回执
+  // （有回执就说明这一轮跑到了工具结束之后，不再是"进行中终止"）。
+  const lastRow = rows[rows.length - 1] ?? '';
+  assert(
+    lastRow.includes('restart-slow') && lastRow.includes('exec_command'),
+    'restart: the killed tool card must be the last persisted row; got ' +
+      lastRow.slice(0, 200),
+  );
+  assert(
+    !rows.some(
+      (row) => row.includes('restart-slow') && row.includes('"output"'),
+    ),
+    'restart: the killed tool must not have produced an output row',
+  );
+  assert.notEqual(
+    ledger.phase,
+    'completed',
+    'restart: killed turn must not claim completion',
+  );
+  assert.notEqual(
+    ledger.executorStopped,
+    true,
+    'restart: killed turn must not report a fully stopped executor',
+  );
+}
+
 function ownFixtureTree(directory) {
   if (process.platform !== 'win32') return;
   assert(path.resolve(directory).startsWith(path.resolve(root) + path.sep));
@@ -260,6 +317,7 @@ async function runScenario(name) {
       'patch',
       'deadline',
       'native-session',
+      'restart',
     ].includes(name),
     'unknown fixture case',
   );
@@ -469,18 +527,42 @@ async function runScenario(name) {
                         ),
                       ],
                     ]
-                  : [
-                      [register('never.txt')],
-                      [native('build', 'console.log(1+1);')],
-                      [native('test', 'console.log(2+2);')],
-                      [native('fail', 'process.exit(1);')],
-                      [
-                        native(
-                          'forbidden-after-budget',
-                          writes('forbidden.txt', 'must not run'),
-                        ),
-                      ],
-                    ];
+                  : name === 'restart'
+                    ? [
+                        [register('started.txt')],
+                        [
+                          {
+                            type: 'message',
+                            id: 'fixture-restart-partial',
+                            role: 'assistant',
+                            content: [
+                              {
+                                type: 'output_text',
+                                text: 'RESTART-PARTIAL-TEXT',
+                              },
+                            ],
+                          },
+                          native(
+                            'restart-slow',
+                            writes('started.txt', 'started') +
+                              'setTimeout(()=>{' +
+                              writes('late.txt', 'must not run after kill') +
+                              '},15000);',
+                          ),
+                        ],
+                      ]
+                    : [
+                        [register('never.txt')],
+                        [native('build', 'console.log(1+1);')],
+                        [native('test', 'console.log(2+2);')],
+                        [native('fail', 'process.exit(1);')],
+                        [
+                          native(
+                            'forbidden-after-budget',
+                            writes('forbidden.txt', 'must not run'),
+                          ),
+                        ],
+                      ];
   const requests = [];
   const responses = [];
   const httpArrivals = [];
@@ -696,12 +778,29 @@ async function runScenario(name) {
   child.stderr.on('data', (data) => {
     stderr = (stderr + data.toString('utf8')).slice(-2 * 1024 * 1024);
   });
+  // restart：等工具真的开始跑（marker 落盘）再杀进程，保证"回合进行中终止"是真事，
+  // 而不是在模型请求还没回来时就把它掐掉。
+  const restartKillWatch =
+    name === 'restart'
+      ? (async () => {
+          const marker = path.join(project, 'started.txt');
+          const deadline = Date.now() + 30_000;
+          while (Date.now() < deadline && !(await exists(marker))) {
+            await sleep(20);
+          }
+          assert(await exists(marker), 'restart: tool never started');
+          // 留一点时间让这一轮的工具卡片落进项目历史，再终止进程。
+          await sleep(400);
+          child.kill();
+        })()
+      : null;
   const timeout = setTimeout(() => child.kill(), 90_000);
   const exit = await new Promise((resolve, reject) => {
     child.once('error', reject);
     child.once('exit', (code, signal) => resolve({ code, signal }));
   }).finally(() => clearTimeout(timeout));
   if (planWatch) clearInterval(planWatch);
+  if (restartKillWatch) await restartKillWatch;
   await planObservationTask;
   server.closeAllConnections();
   await new Promise((resolve) => server.close(resolve));
@@ -829,28 +928,32 @@ async function runScenario(name) {
       ': Direct Responses requests must allow multiple tool calls without changing the selected model',
   );
   assert(ledger, name + ': missing host-authoritative ledger');
-  assert.equal(exit.code, 0, name + ': CLI failed; inspect result.json');
-  assert.equal(
-    report.markers.forbidden,
-    false,
-    name + ': effect ran after host terminal',
-  );
-  assert.equal(
-    ledger.value.usedPasses,
-    1,
-    name + ': ordinary commands must share one pass',
-  );
-  assert.equal(
-    ledger.value.phase,
-    ['completed', 'patch', 'native-session'].includes(name)
-      ? 'completed'
-      : 'exhausted',
-  );
-  assert.equal(
-    ledger.value.executorStopped,
-    true,
-    name + ': missing full executor exit proof',
-  );
+  if (name === 'restart') {
+    await assertRestartKeepsPartialHistory(project, ledger.value, exit);
+  } else {
+    assert.equal(exit.code, 0, name + ': CLI failed; inspect result.json');
+    assert.equal(
+      report.markers.forbidden,
+      false,
+      name + ': effect ran after host terminal',
+    );
+    assert.equal(
+      ledger.value.usedPasses,
+      1,
+      name + ': ordinary commands must share one pass',
+    );
+    assert.equal(
+      ledger.value.phase,
+      ['completed', 'patch', 'native-session'].includes(name)
+        ? 'completed'
+        : 'exhausted',
+    );
+    assert.equal(
+      ledger.value.executorStopped,
+      true,
+      name + ': missing full executor exit proof',
+    );
+  }
   if (name === 'completed') assert.equal(report.markers.ready, true);
   if (isMcp) {
     assert.equal(