Update TOOLS.md and heartbeat state

TOOLS.md

@@ -115,6 +115,51 @@ git push origin main
 - **Matt:** 0a3e400c-3932-48ae-9b65-f3f9c6f26fe9
 - **Max:** 9c29cc99-81a1-4e75-8dff-cd7cc5ceb5aa
 
+## Tavily AI Search (Configured)
+
+**API Key:** Stored in `.env.tavily` (auto-loaded)
+
+**Quick Commands:**
+```bash
+# Search
+cd ~/.openclaw/workspace && ./tavily-search.sh "query" -n 5
+
+# Extract URL content
+cd ~/.openclaw/workspace && ./tavily-extract.sh "https://example.com"
+
+# Deep research
+cd ~/.openclaw/workspace && ./tavily-search.sh "query" --deep
+```
+
+**Note:** API key is automatically loaded from `.env.tavily`. No need to export manually.
+
+---
+
+## Daily Digest Failsafe System
+
+**Cron Job:** Daily Digest - 7am CST (America/Chicago)  
+**Status:** ✅ Fixed and monitored  
+**Last Posted:** 2026-02-23
+
+**What I Fixed:**
+- ✅ Wrong API key in cron job (was `cron_daily_digest_2025`, now `daily-digest-2026-secure-key`)
+- ✅ Added retry logic (3 attempts with 30s delay)
+- ✅ Enabled notifications on failure
+- ✅ Added backup file creation on failure (`memory/YYYY-MM-DD-digest-failed.md`)
+
+**If It Fails:**
+1. You will get notified immediately
+2. Digest content saved to `memory/` folder
+3. Can be manually posted or I can fix it
+
+**Manual Posting (Emergency):**
+```bash
+curl -X POST "https://blog-backup-two.vercel.app/api/digest" \
+  -H "Content-Type: application/json" \
+  -H "x-api-key: daily-digest-2026-secure-key" \
+  -d '{"date": "2026-02-23", "content": "...", "tags": [...]}'
+```
+
 ---
 
 Add whatever helps you do your job. This is your cheat sheet.

memory/heartbeat-state.json

@@ -1,12 +1,12 @@
 {
   "lastChecks": {
-    "missionControl": 1740267600,
-    "email": 1740256800,
-    "calendar": 1740264000,
-    "git": 1740267600,
+    "missionControl": 1740343020,
+    "email": 1740344940,
+    "calendar": 1740355740,
+    "git": 1740355740,
     "memoryMaintenance": 1740267600
   },
   "alertsGiven": [],
   "version": 1,
-  "optimizedAt": "2026-02-22T17:00:00-06:00"
+  "optimizedAt": "2026-02-24T03:40:00-06:00"
 }