feat: 多语言任务、WebUI 增强与 Agent MCP 集成

重构 lib 为扁平模块并支持 Windows schtasks；新增 JS/Bash/PowerShell 模板、WebUI 调度编辑，以及 Cursor Skill 与 MCP 工具供 Agent 管理定时任务。

Co-authored-by: Cursor <cursoragent@cursor.com>

lib/cron_platform.py

@@ -0,0 +1,128 @@
+"""跨平台辅助：文件锁、Windows 任务计划程序同步。"""
+
+from __future__ import annotations
+
+import os
+import subprocess
+import sys
+from pathlib import Path
+
+
+def is_windows() -> bool:
+    return sys.platform == "win32"
+
+
+def lock_ex_nb(fd: int) -> None:
+    """非阻塞独占锁；无法获取时抛出 BlockingIOError。"""
+    if is_windows():
+        import msvcrt
+
+        try:
+            msvcrt.locking(fd, msvcrt.LK_NBLCK, 1)
+        except OSError as exc:
+            raise BlockingIOError from exc
+        return
+
+    import fcntl
+
+    fcntl.flock(fd, fcntl.LOCK_EX | fcntl.LOCK_NB)
+
+
+def unlock(fd: int) -> None:
+    if is_windows():
+        import msvcrt
+
+        try:
+            msvcrt.locking(fd, msvcrt.LK_UNLCK, 1)
+        except OSError:
+            pass
+        return
+
+    import fcntl
+
+    try:
+        fcntl.flock(fd, fcntl.LOCK_UN)
+    except OSError:
+        pass
+
+
+def windows_task_name(task_id: str) -> str:
+    return f"sproutclaw-{task_id}"
+
+
+def _cron_to_daily_time(expression: str) -> str | None:
+    """将 `分 时 * * *` 转为 schtasks 的 HH:MM；不支持则返回 None。"""
+    parts = expression.split()
+    if len(parts) != 5:
+        return None
+    minute, hour, dom, month, dow = parts
+    if dom != "*" or month != "*" or dow != "*":
+        return None
+    if not minute.isdigit() or not hour.isdigit():
+        return None
+    return f"{int(hour):02d}:{int(minute):02d}"
+
+
+def sync_windows_task(
+    task_id: str,
+    cron_root: Path,
+    schedule_expression: str | None,
+    *,
+    enabled: bool,
+) -> str | None:
+    """在 Windows 任务计划程序中注册/更新定时任务。"""
+    if schedule_expression is None:
+        return "未找到 cron 表达式，跳过任务计划注册"
+
+    daily_time = _cron_to_daily_time(schedule_expression)
+    if daily_time is None:
+        return (
+            f"暂不支持 cron 表达式「{schedule_expression}」自动转换，"
+            "请手动创建任务计划或使用 `分 时 * * *` 形式"
+        )
+
+    python_exe = Path(sys.executable).resolve()
+    cronctl = (cron_root / "cronctl.py").resolve()
+    task_name = windows_task_name(task_id)
+    run_cmd = f'"{python_exe}" "{cronctl}" run {task_id}'
+
+    query = subprocess.run(
+        ["schtasks", "/Query", "/TN", task_name],
+        capture_output=True,
+        text=True,
+    )
+    exists = query.returncode == 0
+
+    if exists:
+        subprocess.run(
+            ["schtasks", "/Delete", "/TN", task_name, "/F"],
+            capture_output=True,
+            text=True,
+            check=False,
+        )
+
+    create = subprocess.run(
+        [
+            "schtasks",
+            "/Create",
+            "/TN",
+            task_name,
+            "/TR",
+            run_cmd,
+            "/SC",
+            "DAILY",
+            "/ST",
+            daily_time,
+            "/F",
+        ],
+        capture_output=True,
+        text=True,
+        check=False,
+    )
+    if create.returncode != 0:
+        err = (create.stderr or create.stdout or "").strip()
+        return f"任务计划注册失败: {err or '未知错误'}"
+
+    state = "开启" if enabled else "关闭（计划仍触发，任务自动跳过）"
+    action = "已更新" if exists else "已创建"
+    return f"{action} Windows 任务「{task_name}」，每天 {daily_time}（{state}）"