From e70933d2239732b6cf7ff77a7e6c63ebb45be4d0 Mon Sep 17 00:00:00 2001
From: cfdaily <cfdaily@gitee.com>
Date: Sun, 17 May 2026 05:55:39 +0800
Subject: [PATCH] auto-sync: 2026-05-17 05:55:39

---
 src/blackboard/db.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/blackboard/db.py b/src/blackboard/db.py
index 4e09c40..f5b9c8d 100644
--- a/src/blackboard/db.py
+++ b/src/blackboard/db.py
@@ -169,7 +169,7 @@ _SCHEMA_STATEMENTS = [
     # observations
     """CREATE TABLE IF NOT EXISTS observations (
         id INTEGER PRIMARY KEY AUTOINCREMENT,
-        task_id TEXT NOT NULL REFERENCES tasks(id),
+        task_id TEXT REFERENCES tasks(id),
         observer TEXT NOT NULL,
         severity TEXT NOT NULL DEFAULT 'info' CHECK (severity IN ('blocking','warning','info','audit')),
         body TEXT NOT NULL,