configurable sessions dir, exclude jsonl-sync from build, simplify db path

jsonl-sync/export.mjs

@@ -4,7 +4,8 @@ import { fileURLToPath } from 'node:url';
 import Database from 'better-sqlite3';
 
 const __dirname = path.dirname(fileURLToPath(import.meta.url));
-const SESSIONS_DIR = '/home/node/.openclaw/agents/main/sessions';
+import os from 'node:os';
+const SESSIONS_DIR = process.env.SESSIONS_DIR || path.join(os.homedir(), '.openclaw/agents/main/sessions');
 const DB_FILE = path.join(__dirname, 'sessions.db');
 
 const db = new Database(DB_FILE);