feat(server): list_sessions 支持 project 过滤（json_extract + Python 兜底）

src/genesis/server/store.py

@@ -150,13 +150,31 @@ class SessionStore:
             raise SessionNotFoundError(f"会话不存在: {session_id}")
         return self._from_dict(json.loads(row["data"]))
 
-    def list_sessions(self, user_id: str) -> list[SessionRecord]:
-        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]
+    def list_sessions(self, user_id: str, project: str | None = None) -> list[SessionRecord]:
+        if project is None:
+            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]
+        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]
         # 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