feat: 构建超时控制、日志持久化、任务删除、pod install 及多项 UI 优化

- 新增 BUILD_TIMEOUT_HOURS 配置，超时自动标记失败
- 日志保存到独立 backend/logs/ 目录，不随构建目录删除
- 新增任务删除 API 及前端删除按钮
- 构建流程增加 pod install 步骤
- 通过文件传递配置避免命令行参数截断
- Provisioning Profile 支持按名称搜索
- dSYM 下载支持目录打包为 zip
- 前端端口可配置、历史页增加下载列和耗时显示
- 日志弹窗支持展开/收起详细日志
- 自动生成 upload_key 标识

backend/services/log_streamer.py

@@ -64,6 +64,12 @@ class LogStreamer:
         if not queue:
             return
 
+        # 回放已缓存的历史日志
+        existing = self._log_lines.get(task_id, [])
+        for entry in existing:
+            yield entry
+
+        # 流式推送新消息
         while True:
             try:
                 msg = await asyncio.wait_for(queue.get(), timeout=30)
@@ -89,12 +95,15 @@ class LogStreamer:
         self._queues.pop(task_id, None)
 
     def save_log(self, task_id: str, build_dir: Path):
-        """将收集的日志保存到打包目录"""
-        lines = self._log_lines.pop(task_id, None)
+        """将收集的日志保存到独立日志目录（不会随构建目录删除）"""
+        lines = self._log_lines.get(task_id)
         if not lines:
             return
 
-        log_path = build_dir / "build.log"
+        # 保存到 backend/logs/ 目录
+        logs_dir = Path(__file__).parent.parent / "logs"
+        logs_dir.mkdir(exist_ok=True)
+        log_path = logs_dir / f"{task_id}.log"
         with open(log_path, "w", encoding="utf-8") as f:
             for entry in lines:
                 ts = entry["timestamp"]
@@ -102,11 +111,28 @@ class LogStreamer:
                 msg = entry["message"]
                 f.write(f"[{ts}] [{level}] {msg}\n")
 
-    def get_log(self, build_dir: Path) -> str:
-        """读取已保存的打包日志"""
-        log_path = build_dir / "build.log"
-        if log_path.exists():
-            return log_path.read_text(encoding="utf-8")
+        # 同时保存到构建目录（如果存在）
+        if build_dir and build_dir.exists():
+            with open(build_dir / "build.log", "w", encoding="utf-8") as f:
+                for entry in lines:
+                    ts = entry["timestamp"]
+                    level = entry["level"].upper()
+                    msg = entry["message"]
+                    f.write(f"[{ts}] [{level}] {msg}\n")
+
+    def get_log(self, build_dir: Path, task_id: str = None) -> str:
+        """读取已保存的打包日志（优先从独立日志目录读取）"""
+        # 优先从独立日志目录读取
+        if task_id:
+            logs_dir = Path(__file__).parent.parent / "logs"
+            log_path = logs_dir / f"{task_id}.log"
+            if log_path.exists():
+                return log_path.read_text(encoding="utf-8")
+        # 回退到构建目录
+        if build_dir:
+            log_path = build_dir / "build.log"
+            if log_path.exists():
+                return log_path.read_text(encoding="utf-8")
         return ""