{"success":true,"data":{"message":"SecondSelf Backend API","version":"1.0.0","timestamp":"2026-04-12T15:15:05.365Z","endpoints":{"health":"/health","ping":"/health/ping","auth":{"signup":"/auth/signup","login":"/auth/login","me":"/auth/me"},"transactions":{"create":"POST /transactions","get":"GET /transactions/:id","list":"GET /transactions","update":"PUT /transactions/:id","delete":"DELETE /transactions/:id","stats":"GET /transactions/stats","query":"POST /transactions/query","attachments":{"add":"POST /transactions/:id/attachments","list":"GET /transactions/:id/attachments"}}}}}