diff --git a/src/genesis/server/store.py b/src/genesis/server/store.py
index 0ef47a9..ea5715f 100644
--- a/src/genesis/server/store.py
+++ b/src/genesis/server/store.py
@@ -157,24 +157,15 @@ class SessionStore:
                     "SELECT data FROM sessions WHERE user_id = ?",
                     (user_id,),
                 ).fetchall()
-            recs = [self._from_dict(json.loads(r["data"])) for r in rows]
         else:
-            try:
-                with self._conn() as c:
-                    rows = c.execute(
-                        "SELECT data FROM sessions WHERE user_id = ?"
-                        " AND json_extract(data, '$.project') = ?",
-                        (user_id, project),
-                    ).fetchall()
-                recs = [self._from_dict(json.loads(r["data"])) for r in rows]
-            except Exception:
-                # json_extract 不可用（旧 SQLite）→ 全量取回后 Python 过滤兜底
-                with self._conn() as c:
-                    rows = c.execute(
-                        "SELECT data FROM sessions WHERE user_id = ?", (user_id,)
-                    ).fetchall()
-                recs = [self._from_dict(json.loads(r["data"])) for r in rows]
-                recs = [r for r in recs if r.project == project]
+            # 现代 SQLite 均支持 json_extract（>=3.9，2015）；按 project 列检索
+            with self._conn() as c:
+                rows = c.execute(
+                    "SELECT data FROM sessions WHERE user_id = ?"
+                    " AND json_extract(data, '$.project') = ?",
+                    (user_id, project),
+                ).fetchall()
+        recs = [self._from_dict(json.loads(r["data"])) for r in rows]
         # updated_at 在 JSON data 内，无法用 SQL 列排序 → 取回后按时间降序
         recs.sort(key=lambda r: r.updated_at, reverse=True)
         return recs