fix:每日推荐修复

server/app/api/v1/push.py

@@ -153,6 +153,32 @@ async def register(req: PushRegisterRequest, db: AsyncSession = Depends(get_db))
         token.is_active = True
         token.last_seen_at = _ensure_utc(now)
 
+    # 额外：尽早写入/补齐时区与语言（用于按用户时区生成排程）
+    # 说明：
+    # - 用户首次授权后会立即调用 /register，但不一定马上进入“每日提醒”确认页
+    # - 若 push_preferences 里 timezone 为空，会导致排程回退到 UTC，体验不符合预期
+    if req.device_meta:
+        tz = (req.device_meta.timezone or "").strip() or None
+        loc = (req.device_meta.locale or "").strip() or None
+        if tz or loc:
+            qpref = select(PushPreference).where(PushPreference.client_user_id == req.client_user_id)
+            rpref = await db.execute(qpref)
+            pref = rpref.scalar_one_or_none()
+            if pref is None:
+                pref = PushPreference(
+                    client_user_id=req.client_user_id,
+                    enabled=False,
+                    times_per_day=0,
+                    timezone=tz,
+                    locale=loc,
+                )
+                db.add(pref)
+            else:
+                if tz and not (pref.timezone or "").strip():
+                    pref.timezone = tz
+                if loc and not (pref.locale or "").strip():
+                    pref.locale = loc
+
     await db.commit()
     return {"status": "ok"}
 
@@ -187,8 +213,11 @@ async def put_preferences(req: PushPreferencesRequest, db: AsyncSession = Depend
     else:
         pref.enabled = enabled
         pref.times_per_day = times
-        pref.timezone = req.timezone
-        pref.locale = req.locale
+        # 注意：只在客户端显式传入时覆盖，避免把已保存的 timezone/locale 清空导致排程回退到 UTC
+        if req.timezone is not None:
+            pref.timezone = req.timezone
+        if req.locale is not None:
+            pref.locale = req.locale
         if req.user_profile is not None:
             pref.user_profile_json = req.user_profile.model_dump(mode="json")