make sync command configurable via appsettings

appsettings.json

@@ -7,5 +7,8 @@
   },
   "AllowedHosts": "*",
   "Urls": "http://0.0.0.0:18684",
-  "DbPath": "jsonl-sync/sessions.db"
+  "DbPath": "jsonl-sync/sessions.db",
+  "SyncWorkingDirectory": "/home/node/.openclaw/workspace/projects/token-analytics/jsonl-sync",
+  "SyncCommandFileName": "docker",
+  "SyncCommandArguments": "exec meleki node /home/node/.openclaw/workspace/projects/token-analytics/jsonl-sync/export.mjs"
 }