feat(gateway): Add cron job provisioning

Create a mission control runner cron job via the gateway HTTP API\nand ensure it is present on startup. Adds cron helpers, job\nbuilder, and a startup hook.\n\nCo-Authored-By: Claude <noreply@anthropic.com>

backend/app/services/cron_jobs.py

@@ -0,0 +1,65 @@
+from __future__ import annotations
+
+import logging
+from typing import Any
+
+from app.integrations.openclaw_gateway import (
+    OpenClawGatewayError,
+    list_cron_jobs,
+    upsert_cron_job,
+)
+
+logger = logging.getLogger(__name__)
+
+MISSION_CONTROL_CRON_NAME = "mission-control-runner/10m"
+
+
+def _mission_control_runner_message() -> str:
+    return (
+        "You are the Mission Control Runner agent.\n\n"
+        "On this scheduled tick:\n"
+        "- Run the HEARTBEAT.md procedure for Mission Control (check-in, list boards, "
+        "list tasks).\n"
+        "- If any task is already in_progress, stop (do not claim another).\n"
+        "- Otherwise, find the oldest inbox task across all boards, claim it by moving "
+        "to in_progress.\n"
+        "- Execute the task fully.\n"
+        "- When complete, move it to review.\n"
+        "- If no inbox tasks exist, do nothing.\n"
+        "Only update Mission Control (no chat messages)."
+    )
+
+
+def build_mission_control_cron_job() -> dict[str, Any]:
+    return {
+        "name": MISSION_CONTROL_CRON_NAME,
+        "schedule": {"kind": "every", "everyMs": 600000},
+        "sessionTarget": "isolated",
+        "enabled": True,
+        "payload": {"kind": "agentTurn", "message": _mission_control_runner_message()},
+    }
+
+
+async def ensure_mission_control_cron_job() -> None:
+    try:
+        payload = await list_cron_jobs()
+    except OpenClawGatewayError as exc:
+        logger.warning("Gateway cron list failed: %s", exc)
+        return
+
+    jobs: list[dict[str, Any]] = []
+    if isinstance(payload, list):
+        jobs = payload
+    elif isinstance(payload, dict):
+        jobs = list(payload.get("jobs", []))
+
+    job = build_mission_control_cron_job()
+    if any(item.get("name") == job["name"] for item in jobs):
+        logger.info("Updating gateway cron job: %s", job["name"])
+    else:
+        logger.info("Creating gateway cron job: %s", job["name"])
+
+    try:
+        await upsert_cron_job(job)
+    except OpenClawGatewayError as exc:
+        logger.warning("Gateway cron upsert failed: %s", exc)