feat: add cron job setup for automated notification auditing

- scripts/setup-cron.sh: outputs cron job JSON for agents
- SKILL.md: documents cron setup and verification steps
- Runs twice daily (11:00 + 15:00 CET) with 6h stale threshold

docs/SKILL.md

@@ -152,3 +152,59 @@ argus escalate resolve <id> --by WHO --resolution "..."
    - If not relevant: `argus notif dismiss <id> "Not my area"`
 4. **Audit**: `argus notif audit` (escalates stale items)
 5. **Log**: `argus activity log triage "Processed 5 notifications"`
+
+---
+
+## Cron Jobs (Automated Auditing)
+
+Set up cron jobs to automatically audit stale notifications twice daily.
+
+### Step 1: Add Cron Jobs
+
+Use the OpenClaw `cron` tool to add these jobs:
+
+**Morning Audit (11:00 CET):**
+```json
+{
+  "name": "argus-audit-morning",
+  "schedule": {"kind": "cron", "expr": "0 10 * * *", "tz": "Europe/Berlin"},
+  "payload": {
+    "kind": "agentTurn",
+    "message": "Run notification audit: ARGUS_BACKEND=tea argus notif audit --stale-hours 6. If escalations created, summarize them briefly."
+  },
+  "sessionTarget": "isolated",
+  "delivery": {"mode": "announce"}
+}
+```
+
+**Afternoon Audit (15:00 CET):**
+```json
+{
+  "name": "argus-audit-afternoon", 
+  "schedule": {"kind": "cron", "expr": "0 14 * * *", "tz": "Europe/Berlin"},
+  "payload": {
+    "kind": "agentTurn",
+    "message": "Run notification audit: ARGUS_BACKEND=tea argus notif audit --stale-hours 6. If escalations created, summarize them briefly."
+  },
+  "sessionTarget": "isolated",
+  "delivery": {"mode": "announce"}
+}
+```
+
+### Step 2: Verify Cron Jobs
+
+Check that the jobs are registered:
+```bash
+# Via cron tool
+cron list
+```
+
+Expected output should show `argus-audit-morning` and `argus-audit-afternoon`.
+
+### What the Audit Does
+
+- Checks all pending notifications older than 6 hours
+- Creates escalations for stale items
+- Reports summary back to your channel
+
+Adjust `--stale-hours` based on your responsiveness requirements.

scripts/setup-cron.sh

@@ -0,0 +1,57 @@
+#!/bin/bash
+#
+# Setup Argus cron jobs for notification auditing
+# Run this after installing Argus to enable automatic stale notification escalation
+#
+set -e
+
+AGENT_NAME="${1:-$(whoami)}"
+STALE_HOURS="${2:-6}"
+
+echo "╔════════════════════════════════════════╗"
+echo "║     Argus Cron Job Setup               ║"
+echo "╚════════════════════════════════════════╝"
+echo
+echo "Agent: $AGENT_NAME"
+echo "Stale threshold: ${STALE_HOURS}h"
+echo
+
+# This script outputs the cron job JSON for agents to add via OpenClaw cron tool
+cat << EOF
+Add these cron jobs using the OpenClaw cron tool:
+
+────────────────────────────────────────────────────────────────
+CRON JOB 1: Morning Audit (11:00 CET)
+────────────────────────────────────────────────────────────────
+{
+  "name": "argus-audit-morning",
+  "schedule": {"kind": "cron", "expr": "0 10 * * *", "tz": "Europe/Berlin"},
+  "payload": {
+    "kind": "agentTurn",
+    "message": "Run notification audit: ARGUS_BACKEND=tea argus notif audit --stale-hours ${STALE_HOURS}. If escalations created, summarize them briefly."
+  },
+  "sessionTarget": "isolated",
+  "delivery": {"mode": "announce"}
+}
+
+────────────────────────────────────────────────────────────────
+CRON JOB 2: Afternoon Audit (15:00 CET)
+────────────────────────────────────────────────────────────────
+{
+  "name": "argus-audit-afternoon",
+  "schedule": {"kind": "cron", "expr": "0 14 * * *", "tz": "Europe/Berlin"},
+  "payload": {
+    "kind": "agentTurn",
+    "message": "Run notification audit: ARGUS_BACKEND=tea argus notif audit --stale-hours ${STALE_HOURS}. If escalations created, summarize them briefly."
+  },
+  "sessionTarget": "isolated",
+  "delivery": {"mode": "announce"}
+}
+
+────────────────────────────────────────────────────────────────
+
+To add via CLI (if available):
+  openclaw cron add '<json>'
+
+Or via the cron tool in your session.
+EOF