fix(cron): prevent recomputeNextRuns from skipping due jobs in onTimer (#9823)

* fix(cron): prevent recomputeNextRuns from skipping due jobs in onTimer

ensureLoaded(forceReload) called recomputeNextRuns before runDueJobs,
which recalculated nextRunAtMs to a strictly future time. Since
setTimeout always fires a few ms late, the due check (now >= nextRunAtMs)
always failed and every/cron jobs never executed. Fixes #9788.

* docs: add changelog entry for cron timer race fix (#9823) (thanks @pycckuu)

---------

Co-authored-by: Tyler Yust <TYTYYUST@YAHOO.COM>

src/cron/service/store.ts

@@ -126,7 +126,15 @@ async function getFileMtimeMs(path: string): Promise<number | null> {
   }
 }
 
-export async function ensureLoaded(state: CronServiceState, opts?: { forceReload?: boolean }) {
+export async function ensureLoaded(
+  state: CronServiceState,
+  opts?: {
+    forceReload?: boolean;
+    /** Skip recomputing nextRunAtMs after load so the caller can run due
+     *  jobs against the persisted values first (see onTimer). */
+    skipRecompute?: boolean;
+  },
+) {
   // Fast path: store is already in memory. Other callers (add, list, run, …)
   // trust the in-memory copy to avoid a stat syscall on every operation.
   if (state.store && !opts?.forceReload) {
@@ -255,8 +263,9 @@ export async function ensureLoaded(state: CronServiceState, opts?: { forceReload
   state.storeLoadedAtMs = state.deps.nowMs();
   state.storeFileMtimeMs = fileMtimeMs;
 
-  // Recompute next runs after loading to ensure accuracy
-  recomputeNextRuns(state);
+  if (!opts?.skipRecompute) {
+    recomputeNextRuns(state);
+  }
 
   if (mutated) {
     await persist(state);