Description

The internal Cron scheduler exhibits a "Memory Amnesia" bug where it fails to load multiple jobs from jobs.json into the active memory state. While jobs are correctly persisted to disk via cron.add, the runtime scheduler (and cron.list) often only reflects a single job (typically the first one), causing subsequent scheduled tasks to fail silently.

Reproduction Steps

1. Use cron.add to create Job A.
2. Use cron.add to create Job B.
3. Verify persistence: cat ~/.openclaw/cron/jobs.json shows both A and B.
4. Verify memory: Run cron.list. Result: Only Job A is shown.
5. Wait for Job B's trigger time. Result: Job B does not fire.

Expected Behavior

All jobs present in jobs.json should be loaded into the scheduler memory upon creation or Gateway restart.

Environment

• OS: macOS (Darwin 25.2.0)
• OpenClaw Version: 2026.2.1 (ed4529e)
• Node: v25.5.0