fix(ai-outfit): 停止生成打断当前目录行 + 「停止中…」反馈 (§19.24)

修「开始生成→几秒后停止→两个按钮都灰几十秒像卡死」：非死锁，是温和停止
在等当前目录行收尾，而 _generate_directory_outfit 一次性 submit 全部图片、
shutdown(wait=True) 等全跑完，停止信号进不到该循环；且 _stop 后无反馈。

- outfit_batch：run() 经 _accepts_should_stop 给 generate_func 传 should_stop
  (= _stop_event.is_set)，2-arg 才传、1-arg 仍兼容（含既有 mock）
- ai_outfit：generate_outfit_image/_generate_directory_outfit 增 should_stop；
  目录循环改有界提交——始终最多 image_concurrency 张在飞，每张完成后、提交
  下一张前查 should_stop，已停止则停止提交、在飞收尾即返回（结果注明
  「已停止，N 张未生成」，已生成的带 output_paths）
- 面板：_OutfitWorker.gen(task, should_stop) 透传；_stop() 把停止按钮改
  「停止中…」；_set_running(False) 复位「停止生成」

测试：目录行 should_stop 触发后只生成到停止点、返回「已停止」结果；2-arg
generate_func 收到 should_stop；既有用例（1-arg mock、目录并发/部分失败）保持绿。
全套 py37 通过（test_config_service 的 packaging 模板失败属并行 §19.13，无关）。
离屏冒烟：stop 截断 run 且 runner 及时返回；面板停止按钮「停止中…」→结束复位。

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

docs/11-ai-outfit.md

@@ -243,7 +243,8 @@ Excel 行 → `OutfitTask` 列表的转换由 `excel_service` 完成；核心只
 - `RateLimiter(新请求间隔)` 限制同一目录内每个新图片请求的启动间隔；任务间 `单任务冷却` 作用于 Excel 行之间。因为行并发固定为 1，批次的最大 HTTP 并发约等于图片并发数。
 - 每行最多「首次 + 重试次数」尝试；限流/429 用短阶梯等待，普通错误短等待。
 - 单次请求放子线程 + 主线程秒级检查，**等待 >30 秒持续打心跳日志**；超时按分辨率动态决定（512/1K/2K/4K → 180/240/360/600 秒，可被 `timeout_seconds` 覆盖）。
-- **温和停止**：置位停止后不再提交新任务，已发请求收尾后正常写回。
+- **温和停止（含目录行内打断，§19.24）**：置位停止后不再提交新 Excel 行；**当前目录行内部也据 `should_stop` 提前收尾**——`_generate_directory_outfit` 改为「有界提交」（始终最多 `图片并发数` 张在飞），每张完成后提交下一张前检查 `should_stop()`，已停止则不再提交剩余图片、让在飞的收尾即返回（结果标注「已停止，N 张未生成」，已生成的照常带 `output_paths`）。这样停止后最多再等 ~图片并发数 张图、秒级返回，而不是把当前目录整目录跑完。`should_stop` 由 `OutfitBatchRunner.run()` 传给 `generate_func`（= `self._stop_event.is_set`）。
+- **停止反馈（§19.24）**：点「停止生成」后该按钮文案变「停止中…」（保持禁用），明确是在收尾不是卡死；批次结束 `_set_running(False)` 复位为「停止生成」。期间「开始生成」仍禁用，待 `finished`/`failed` 后恢复。
 
 ## 9. 输出
 

src/app/widgets/ai_outfit_panel.py

@@ -108,15 +108,17 @@ class _OutfitWorker(QObject):
             self.finished.emit(OutfitBatchSummary(total=0))
             return
 
-        def gen(task):
+        def gen(task, should_stop=None):
             # request_interval/image_log pace and narrate directory rows that
             # fan out into many images (docs/11 §9.1); single-file rows ignore them.
+            # should_stop lets a directory row halt remaining images on 停止 (§19.24).
             return generate_outfit_image(
                 task, self._prompt, self._output_dir, self._model_config,
                 quality=self._quality, resolution=self._resolution,
                 request_interval=self._options.request_interval,
                 image_concurrency=self._options.concurrency,
                 image_log=self.log.emit,
+                should_stop=should_stop,
             )
 
         def on_progress(completed, total, result):
@@ -1135,8 +1137,9 @@ class AiOutfitPanel(QWidget):
     def _stop(self):
         if self._worker is not None:
             self._worker.stop()
-            self._append_log("已请求停止：不再提交新任务，进行中的任务会收尾。")
+            self._append_log("已请求停止：不再提交新行，当前行的剩余图片会停止提交、在飞的收尾后结束。")
             self._stop_btn.setEnabled(False)
+            self._stop_btn.setText("停止中…")
 
     def _selected_model_config(self):
         if not self._models:
@@ -1155,6 +1158,7 @@ class AiOutfitPanel(QWidget):
     def _set_running(self, running):
         self._start_btn.setEnabled(not running)
         self._stop_btn.setEnabled(running)
+        self._stop_btn.setText("停止生成")          # reset 「停止中…」 (§19.24)
         self._excel_edit.setEnabled(not running)
         self._model_combo.setEnabled(not running and bool(self._models))
         self._title_btn.setEnabled(not running)      # mutually exclusive with 生成标题

src/core/ai_outfit.py

@@ -3,7 +3,7 @@ import os
 import re
 import threading
 import time
-from concurrent.futures import ThreadPoolExecutor, as_completed
+from concurrent.futures import FIRST_COMPLETED, ThreadPoolExecutor, wait
 from io import BytesIO
 from pathlib import Path
 
@@ -148,13 +148,15 @@ def generate_outfit_image(
     request_interval=0.0,
     image_concurrency=1,
     image_log=None,
+    should_stop=None,
 ):
     """Generate outfit image(s) for one Excel row and return OutfitResult.
 
     If task.garment_path is a directory (docs/11 §4.1), generate one image per
     source picture into output_dir/<dir leaf>/ and return a single aggregated
     result. Otherwise generate one image to output_dir/<product_id>.jpg. Never
-    raises.
+    raises. should_stop: optional callable -> bool; a directory row stops
+    submitting remaining images once it returns True (docs/11 §8 / §19.24).
     """
     if not isinstance(task, OutfitTask):
         raise TypeError("task must be OutfitTask")
@@ -164,7 +166,7 @@ def generate_outfit_image(
             task, prompt_template, output_dir, model_config,
             quality=quality, resolution=resolution, api_client=api_client,
             request_interval=request_interval, image_concurrency=image_concurrency,
-            image_log=image_log,
+            image_log=image_log, should_stop=should_stop,
         )
 
     try:
@@ -204,6 +206,7 @@ def _generate_directory_outfit(
     request_interval,
     image_concurrency,
     image_log,
+    should_stop=None,
 ):
     """Fan one directory row out into per-image generations (docs/11 §4.1/§9.1).
 
@@ -256,20 +259,48 @@ def _generate_directory_outfit(
                 task.row_index, index, total, image_path.name, exc))
             return False, "", "{}：{}".format(image_path.name, exc)
 
+    def stop_now():
+        return bool(should_stop and should_stop())
+
     total = len(images)
+    items = list(enumerate(images, start=1))   # (index, image_path), in name order
+    next_idx = 0
     outputs = []
     failures = []
+    stopped = False
+    # Bounded submission: keep at most `workers` in flight; before topping up,
+    # check should_stop so a 停止 request halts the remaining images (§19.24).
     with ThreadPoolExecutor(max_workers=workers) as executor:
-        futures = [
+        futures = set()
-            executor.submit(generate_one, index, image_path)
+        while next_idx < total and len(futures) < workers and not stop_now():
-            for index, image_path in enumerate(images, start=1)
+            i, image_path = items[next_idx]; next_idx += 1
-        ]
+            futures.add(executor.submit(generate_one, i, image_path))
-        for future in as_completed(futures):
+        while futures:
+            done, futures = wait(futures, return_when=FIRST_COMPLETED)
+            futures = set(futures)
+            for future in done:
                 ok, output, error = future.result()
                 if ok:
                     outputs.append(output)
                 else:
                     failures.append(error)
+            if stop_now():
+                stopped = True              # stop topping up; let in-flight finish
+                continue
+            while next_idx < total and len(futures) < workers:
+                i, image_path = items[next_idx]; next_idx += 1
+                futures.add(executor.submit(generate_one, i, image_path))
+
+    not_generated = total - (len(outputs) + len(failures))
+    if stopped and not_generated > 0:
+        segs = []
+        if failures:
+            segs.append("{} 张失败：{}".format(len(failures), "；".join(failures)))
+        segs.append("已停止，{} 张未生成".format(not_generated))
+        error = "{} 张中 ".format(total) + "，".join(segs)
+        logger.warning("Outfit dir row %s stopped: %s", task.row_index, error)
+        return OutfitResult(task=task, success=False, output_path=subdir_path,
+                            error=error, attempts=1, output_paths=outputs)
 
     if failures:
         error = "{} 张中 {} 张失败：{}".format(total, len(failures), "；".join(failures))

src/core/outfit_batch.py

@@ -1,3 +1,4 @@
+import inspect
 import logging
 import threading
 import time
@@ -76,6 +77,9 @@ class OutfitBatchRunner:
     ):
         self.tasks = list(tasks)
         self.generate_func = generate_func
+        # Pass should_stop to generate_func only if it accepts a 2nd arg, so
+        # legacy 1-arg generate_func (and test mocks) keep working (§19.24).
+        self._gen_wants_stop = _accepts_should_stop(generate_func)
         self.options = options or OutfitBatchOptions()
         self.progress_callback = progress_callback
         self.log_callback = log_callback
@@ -170,6 +174,9 @@ class OutfitBatchRunner:
         for attempt in range(1, attempts_allowed + 1):
             if self._stop_event.is_set() and attempt > 1:
                 break
+            if self._gen_wants_stop:
+                result = self.generate_func(task, self._stop_event.is_set)
+            else:
                 result = self.generate_func(task)
             result.attempts = attempt
             if result.success:
@@ -215,6 +222,21 @@ class _RunningTask:
     last_heartbeat_at: float = 0.0
 
 
+def _accepts_should_stop(func):
+    """True if func can take a 2nd positional arg (the should_stop callable)."""
+    try:
+        params = inspect.signature(func).parameters.values()
+    except (TypeError, ValueError):
+        return False
+    positional = 0
+    for p in params:
+        if p.kind in (p.POSITIONAL_ONLY, p.POSITIONAL_OR_KEYWORD):
+            positional += 1
+        elif p.kind == p.VAR_POSITIONAL:
+            return True
+    return positional >= 2
+
+
 def retry_delay_seconds(error, attempt):
     """Short stepped retry delay; rate-limit errors back off more."""
     text = str(error or "").lower()

tasks.md

@@ -1418,3 +1418,24 @@
 - [x] `config_service.py`：`DEFAULT_TITLE_PROMPT` 改为「逗号分隔」风格——明确「标题之间用逗号分隔、不要 Markdown 表格/换行/序号/引号/表情」，数量由用户写
 - [x] 测试：`test_ai_text_service.py` 更新/新增——逗号分隔（半角/全角）→ 多条；混换行+逗号→拆开；段内去序号/引号；Markdown 表格输入**不再**当多条（要么单条要么靠提示词避免，至少不产出表头那种垃圾的多条断言）；`extract_text_from_response` 取首条
 - [x] 验证：相关单测 + 全套 py37 通过；离屏冒烟：逗号分隔字符串 → 按序回填各行 A
+
+### 19.24 停止生成：打断当前目录行 + 「停止中…」反馈 — docs/11 §8
+
+前置阅读：
+
+- `docs/11-ai-outfit.md`（§8 并发/限速/重试/停止）
+- `src/core/outfit_batch.py`（`OutfitBatchRunner.run`/`stop`/`_run_one_with_retry`/`_stop_event`）
+- `src/core/ai_outfit.py`（`generate_outfit_image`/`_generate_directory_outfit` 的 `ThreadPoolExecutor` 一次性提交）
+- `src/app/widgets/ai_outfit_panel.py`（`_OutfitWorker.run` 的 `gen` 闭包、`_stop`、`_set_running`）
+
+背景：
+
+点「开始生成」→ 几秒后点「停止生成」→ 之后几十秒两个按钮都灰、像卡死。根因（非死锁，会自行恢复）：温和停止只 `set` `_stop_event`、不提交新行，但**当前目录行**的 `_generate_directory_outfit` 一次性把所有图片 submit 进线程池并 `shutdown(wait=True)` 等全部跑完（每张一次 AI 请求、读超时最高 600s），停止信号进不到这个循环；且 `_stop()` 后无 UI 反馈。已确认修复方向：快速停止 + 反馈。
+
+任务：
+
+- [x] `core/outfit_batch.py`：`run()` 调 `generate_func` 时传 `should_stop=self._stop_event.is_set`；`_run_one_with_retry(task)` → `_run_one_with_retry(task)` 内 `self.generate_func(task, should_stop)`（或闭包捕获），向下传递
+- [x] `core/ai_outfit.py`：`generate_outfit_image(..., should_stop=None)` 透传；`_generate_directory_outfit` 改**有界提交**——始终最多 `image_concurrency` 张在飞，每张完成后、提交下一张前检查 `should_stop()`，已停止则停止提交剩余、让在飞收尾返回；结果 error 注明「已停止，N 张未生成」，`output_paths` 带已生成的；单文件行进入前检查一次 `should_stop()`（已停止→跳过结果）
+- [x] `ai_outfit_panel.py`：`_OutfitWorker.gen(task, should_stop)` 闭包接新参并透传 `generate_outfit_image`；`_stop()` 把 `停止生成` 文案改「停止中…」（保持禁用）；`_set_running(False)` 复位文案为「停止生成」
+- [x] 测试：`test_ai_outfit.py` —— 目录行设 `should_stop` 在第 k 张后置真 → 之后不再新增生成、返回「已停止」结果且已生成的在 `output_paths`；`test_outfit_batch.py` —— 停止后不起新行、当前行提前返回、`finished` 及时；既有用例保持绿（注意 `generate_func` 新签名向后兼容/同步改 mock）
+- [x] 验证：相关单测 + 全套 py37 通过；离屏冒烟：mock 计数/慢 `generate`，开跑后置 stop → 总调用被 `should_stop` 截断、`finished` 及时、`_set_running(False)` 恢复「开始生成」、停止按钮文案回「停止生成」

tests/test_ai_outfit.py

@@ -264,6 +264,28 @@ class TestAiOutfitCore(unittest.TestCase):
         self.assertEqual(len(result.output_paths), 2)
         self.assertFalse((out / "a" / "img2.jpg").exists())
 
+    def test_generate_directory_stops_remaining_on_should_stop(self):
+        """§19.24: should_stop 触发后不再提交剩余图片，返回「已停止」结果。"""
+        from core.ai_outfit import generate_outfit_image
+
+        d = self._make_dir_with_images("a")     # 3 images, image_concurrency=1
+        out = self.tmp / "out"
+        client = _RecordingClient(self._image_bytes())
+
+        # stop as soon as the first image has been generated
+        def should_stop():
+            return client.calls >= 1
+
+        result = generate_outfit_image(
+            self._dir_task(d), "话术", out, model_config={},
+            api_client=client, should_stop=should_stop)
+
+        self.assertFalse(result.success)
+        self.assertEqual(client.calls, 1)        # only 1 generated; rest not submitted
+        self.assertIn("已停止", result.error)
+        self.assertIn("2 张未生成", result.error)
+        self.assertEqual(len(result.output_paths), 1)
+
     def test_generate_directory_uses_image_concurrency(self):
         from core.ai_outfit import generate_outfit_image
 

tests/test_outfit_batch.py

@@ -67,6 +67,23 @@ class TestOutfitBatchRunner(unittest.TestCase):
         self.assertEqual(summary.failure_count, 0)
         self.assertEqual(progress, [(1, 2, 2), (2, 2, 3)])
 
+    def test_two_arg_generate_func_receives_should_stop(self):
+        """§19.24: 2-arg generate_func 收到 should_stop callable；1-arg 仍兼容。"""
+        from core.outfit_batch import OutfitBatchOptions, OutfitBatchRunner
+
+        seen = []
+
+        def generate(task, should_stop):
+            seen.append(callable(should_stop) and should_stop() is False)
+            return _result(task, True)
+
+        OutfitBatchRunner(
+            [_task(2), _task(3)], generate_func=generate,
+            options=OutfitBatchOptions(concurrency=1),
+        ).run()
+
+        self.assertEqual(seen, [True, True])   # both rows got a working should_stop
+
     def test_retry_until_success(self):
         from core.outfit_batch import OutfitBatchOptions, OutfitBatchRunner