feat: enhance scheduled reminders

nanobot/cli/commands.py

@@ -506,6 +506,7 @@ def cron_add(
     at: str = typer.Option(None, "--at", help="Run once at time (ISO format)"),
     deliver: bool = typer.Option(False, "--deliver", "-d", help="Deliver response to channel"),
     to: str = typer.Option(None, "--to", help="Recipient for delivery"),
+    channel: str = typer.Option(None, "--channel", help="Channel for delivery (e.g. 'telegram', 'whatsapp')"),
 ):
     """Add a scheduled job."""
     from nanobot.config.loader import get_data_dir
@@ -534,6 +535,7 @@ def cron_add(
         message=message,
         deliver=deliver,
         to=to,
+        channel=channel,
     )
     
     console.print(f"[green]✓[/green] Added job '{job.name}' ({job.id})")

workspace/AGENTS.md

@@ -22,6 +22,16 @@ You have access to:
 - Use `memory/` directory for daily notes
 - Use `MEMORY.md` for long-term information
 
+## Scheduled Reminders
+
+When user asks for a reminder at a specific time, use `exec` to run:
+```
+nanobot cron add --name "reminder" --message "Your message" --at "YYYY-MM-DDTHH:MM:SS" --deliver --to "USER_ID" --channel "CHANNEL"
+```
+Get USER_ID and CHANNEL from the current session (e.g., `8281248569` and `telegram` from `telegram:8281248569`).
+
+**Do NOT just write reminders to MEMORY.md** — that won't trigger actual notifications.
+
 ## Heartbeat Tasks
 
 `HEARTBEAT.md` is checked every 30 minutes. You can manage periodic tasks by editing this file: