refactor: migrate cron scheduling to node-cron (#3079)

* refactor: migrate cron scheduling to node-cron

* feat: support annually midnight and minutely cron macros

* fix: harden cron recovery and system scheduler compatibility

back/shared/cronScheduler.ts

@@ -0,0 +1,89 @@
+import { createTask, ScheduledTask } from 'node-cron';
+import { parseCronSchedule } from './cronSchedule';
+
+interface SchedulerLogger {
+  warn(message: string, ...args: unknown[]): unknown;
+  error(message: string, ...args: unknown[]): unknown;
+}
+
+export interface CronJob {
+  start(): void;
+  cancel(): void;
+}
+
+// node-cron owns timers and calendar calculation; Qinglong owns execution
+// concurrency and process lifetime. Missed in-process slots join that same queue.
+export function createCronJob(
+  schedule: string,
+  callback: (date: Date) => unknown | Promise<unknown>,
+  options: { name: string; logger: SchedulerLogger; start?: boolean },
+): CronJob {
+  const parsed = parseCronSchedule(schedule);
+  const tasks: ScheduledTask[] = [];
+  let cancelled = false;
+  let started = false;
+  const accepts = (index: number, date: Date) => {
+    if (tasks.length === 1) return true;
+    // Preserve cron-parser 4's day/weekday OR semantics, including its
+    // month-dependent full-day range and the global nth-week constraint.
+    if (parsed.nthDay && Math.ceil(date.getDate() / 7) !== parsed.nthDay)
+      return false;
+    if (index === 1) return !tasks[0].match(date);
+    const monthDays = [31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
+    return parsed.dayCount < monthDays[date.getMonth()] || tasks[1].match(date);
+  };
+  const dispatch = async (index: number, date: Date, missed: boolean) => {
+    if (cancelled || !started || !accepts(index, date)) return;
+    if (missed) {
+      options.logger.warn(
+        '[schedule][补执行迟到任务] 任务: %s, 计划时间: %s',
+        options.name,
+        date.toISOString(),
+      );
+    }
+    try {
+      await callback(date);
+    } catch (error) {
+      options.logger.error(
+        '[schedule][定时回调失败] 任务: %s, 错误: %s',
+        options.name,
+        error instanceof Error ? error.message : String(error),
+      );
+    }
+  };
+  try {
+    for (const [index, pattern] of parsed.patterns.entries()) {
+      const task = createTask(
+        pattern,
+        (context) => dispatch(index, context.date, false),
+        {
+          noOverlap: false,
+          missedExecutionTolerance: 5000,
+        },
+      );
+      tasks.push(task);
+      task.on('execution:missed', (context) =>
+        dispatch(index, context.date, true),
+      );
+      // Fail before an existing schedule is cancelled, including impossible dates.
+      task.getNextRuns(1);
+    }
+  } catch (error) {
+    tasks.forEach((task) => task.destroy());
+    throw error;
+  }
+  const job: CronJob = {
+    start() {
+      if (started || cancelled) return;
+      started = true;
+      tasks.forEach((task) => task.start());
+    },
+    cancel() {
+      if (cancelled) return;
+      cancelled = true;
+      tasks.forEach((task) => task.destroy());
+    },
+  };
+  if (options.start !== false) job.start();
+  return job;
+}