fix(openclaw): harden 4Gi memory ceiling, increase liveness tolerance, add WAL checkpointing and cron delivery fix

k8s/openclaw/setup-compaction-cron.sh

@@ -72,6 +72,24 @@ def main():
                 
     print(f"Compaction complete: {compacted} compacted, {skipped} skipped.")
 
+    # 3. Nightly SQLite WAL Checkpoint across all agent databases
+    print("=== Checkpointing SQLite WAL journals across all agent databases ===")
+    import glob, sqlite3, os
+    dbs = ["/home/node/.openclaw/state/openclaw.sqlite"] + glob.glob("/home/node/.openclaw/agents/*/agent/openclaw-agent.sqlite")
+    wal_freed = 0
+    for db in dbs:
+        wal = db + "-wal"
+        if os.path.exists(wal):
+            sz = os.path.getsize(wal)
+            try:
+                con = sqlite3.connect(db, timeout=15.0)
+                con.execute("PRAGMA wal_checkpoint(TRUNCATE);")
+                con.close()
+                wal_freed += sz
+            except Exception as e:
+                print(f"  ✗ Error checkpointing {db}: {e}")
+    print(f"WAL Checkpoint complete: {wal_freed / (1024*1024):.2f} MB merged to disk.")
+
 if __name__ == "__main__":
     main()
 EOF
@@ -83,10 +101,11 @@ echo "Registering OpenClaw Cron automation '$JOB_NAME' ($CRON_SCHEDULE @ $TIMEZO
 kubectl exec -n "$NAMESPACE" "$POD_NAME" -c "$CONTAINER_NAME" -- openclaw cron add \
   --name "Nightly Session Compaction" \
   --declaration-key "$JOB_NAME" \
-  --description "Nightly multi-agent session compaction for all active topics and main sessions" \
+  --description "Nightly multi-agent session compaction and SQLite WAL checkpointing" \
   --cron "$CRON_SCHEDULE" \
   --tz "$TIMEZONE" \
   --session "isolated" \
+  --no-deliver \
   --command "python3 /home/node/.openclaw/scripts/compact_sessions.py"
 
 echo "=== Compaction Cron automation successfully registered! ==="