diff --git a/runtime/guard.mjs b/runtime/guard.mjs
index d82818a..5ec40ac 100644
--- a/runtime/guard.mjs
+++ b/runtime/guard.mjs
@@ -192,3 +192,4 @@ export async function recordPublish(pool, { channel, type, content, meta = {} })
     return r.rows[0].id
   } catch (e) { console.error('[guard] recordPublish:', String(e).slice(0, 120)); return null }
 }
+// demo r19: comentario inocuo en path protegido