diff --git a/docs/design/01-four-phase-loop.md b/docs/design/01-four-phase-loop.md
index a769588..2beb0d9 100644
--- a/docs/design/01-four-phase-loop.md
+++ b/docs/design/01-four-phase-loop.md
@@ -172,8 +172,10 @@ Agent 写 comment 时指定 mentions → Daemon tick 扫描新 comments → spaw
 CREATE TABLE IF NOT EXISTS mention_queue (
     id INTEGER PRIMARY KEY AUTOINCREMENT,
     comment_id INTEGER NOT NULL,
+    task_id TEXT NOT NULL,
     mentioned_agent TEXT NOT NULL,
     status TEXT NOT NULL DEFAULT 'pending',  -- pending / notified / failed
+    retry_count INTEGER NOT NULL DEFAULT 0,
     created_at TEXT NOT NULL DEFAULT (datetime('now')),
     notified_at TEXT,
     FOREIGN KEY (comment_id) REFERENCES comments(id)