fix(cron): add retry policy for one-shot jobs on transient errors (#24355) (openclaw#24435) thanks @hugenshen

Verified:
- pnpm install --frozen-lockfile
- pnpm check
- pnpm test -- --run src/cron/service.issue-regressions.test.ts src/config/config-misc.test.ts

Co-authored-by: hugenshen <16300669+hugenshen@users.noreply.github.com>
Co-authored-by: Tak Hoffman <781889+Takhoffman@users.noreply.github.com>

src/config/schema.help.ts

@@ -1064,6 +1064,14 @@ export const FIELD_HELP: Record<string, string> = {
     "Path to the cron job store file used to persist scheduled jobs across restarts. Set an explicit path only when you need custom storage layout, backups, or mounted volumes.",
   "cron.maxConcurrentRuns":
     "Limits how many cron jobs can execute at the same time when multiple schedules fire together. Use lower values to protect CPU/memory under heavy automation load, or raise carefully for higher throughput.",
+  "cron.retry":
+    "Overrides the default retry policy for one-shot jobs when they fail with transient errors (rate limit, network, server_error). Omit to use defaults: maxAttempts 3, backoffMs [30000, 60000, 300000], retry all transient types.",
+  "cron.retry.maxAttempts":
+    "Max retries for one-shot jobs on transient errors before permanent disable (default: 3).",
+  "cron.retry.backoffMs":
+    "Backoff delays in ms for each retry attempt (default: [30000, 60000, 300000]). Use shorter values for faster retries.",
+  "cron.retry.retryOn":
+    "Error types to retry: rate_limit, network, timeout, server_error. Use to restrict which errors trigger retries; omit to retry all transient types.",
   "cron.webhook":
     'Deprecated legacy fallback webhook URL used only for old jobs with `notify=true`. Migrate to per-job delivery using `delivery.mode="webhook"` plus `delivery.to`, and avoid relying on this global field.',
   "cron.webhookToken":