diff --git a/internal/store/projects.go b/internal/store/projects.go
index 4ec6511..fc529d5 100644
--- a/internal/store/projects.go
+++ b/internal/store/projects.go
@@ -158,11 +158,13 @@ func (s *Store) ListConversations(owner, projectID string) ([]core.Conversation,
 // ListTasks 跨项目任务列表（方案 A 侧栏数据源）：默认仅未归档；includeArchived 含归档。
 func (s *Store) ListTasks(owner string, includeArchived bool) ([]core.Conversation, error) {
 	q := `SELECT id,project_id,title,profile_id,pinned,archived,allow_cross_read,cross_private,permission_mode,session_note,created_at,updated_at FROM conversations WHERE owner=?`
+	args := []any{owner}
 	if !includeArchived {
-		q += ` AND archived=0`
+		q += ` AND archived=?`
+		args = append(args, false)
 	}
 	q += ` ORDER BY pinned DESC, updated_at DESC`
-	rows, err := s.db.Query(s.q(q), owner)
+	rows, err := s.db.Query(s.q(q), args...)
 	if err != nil {
 		return nil, err
 	}
diff --git a/internal/store/store_test.go b/internal/store/store_test.go
index a8720cb..f2c77d5 100644
--- a/internal/store/store_test.go
+++ b/internal/store/store_test.go
@@ -39,7 +39,7 @@ func openTestStore(t *testing.T) *Store {
 		admin.Exec("DROP SCHEMA IF EXISTS " + schema + " CASCADE")
 		admin.Close()
 	})
-	st, err := OpenPostgres(dsn+"&search_path="+schema, filepath.Join(t.TempDir(), "artifacts"))
+	st, err := OpenPostgres(withTestSearchPath(dsn, schema), filepath.Join(t.TempDir(), "artifacts"))
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -47,6 +47,21 @@ func openTestStore(t *testing.T) *Store {
 	return st
 }
 
+// withTestSearchPath 把用例 schema 放到 search_path 最前，并保留 public，
+// 以便看到已安装在 public 的 pg_trgm。svc.sh 给出的是无查询串的 URL；
+// 键值对 DSN（不含 ://）用空格追加。
+func withTestSearchPath(dsn, schema string) string {
+	path := schema + ",public"
+	if !strings.Contains(dsn, "://") {
+		return dsn + " search_path=" + path
+	}
+	sep := "?"
+	if strings.Contains(dsn, "?") {
+		sep = "&"
+	}
+	return dsn + sep + "search_path=" + path
+}
+
 func isSQLite(st *Store) bool { return st.Dialect() == "sqlite" }
 
 // 迁移验收：全量应用 → 状态 1..4 → 回滚到 1（老库形态）→ 再次前进（既有部署升级路径）。