refactor: 重构 Tool Result 契约，移除 ui_hints 统一使用 result 字段

- ToolAgentOutput 移除 result_summary 和 ui_hints，统一使用 result 字段
- 日历/用户查找工具移除 ui_hints 输出，改为机器可读的结构化结果
- Agent History 移除 tool 消息的 ui_hints 处理逻辑
- App 版本检查改为 manifest.json 方式，支持多渠道发布
- 更新 settings 配置和测试用例适配新结构

backend/src/v1/schedule_items/repository.py

@@ -4,7 +4,7 @@ from datetime import datetime, timezone
 from typing import TYPE_CHECKING, Protocol, Sequence
 from uuid import UUID
 
-from sqlalchemy import func, select, update, delete
+from sqlalchemy import func, or_, select, update, delete
 from sqlalchemy.exc import SQLAlchemyError
 
 from core.db.base_repository import BaseRepository
@@ -39,6 +39,7 @@ class ScheduleItemRepository(Protocol):
         *,
         page: int,
         page_size: int,
+        query: str | None = None,
     ) -> tuple[list[ScheduleItem], int]: ...
     async def create_subscription(self, data: dict) -> ScheduleSubscription: ...
     async def get_subscriptions_by_item_id(
@@ -164,8 +165,12 @@ class SQLAlchemyScheduleItemRepository(BaseRepository[ScheduleItem]):
         *,
         page: int,
         page_size: int,
+        query: str | None = None,
     ) -> tuple[list[ScheduleItem], int]:
         offset = (page - 1) * page_size
+        normalized_query = (query or "").strip()
+        has_query = bool(normalized_query)
+        query_like = f"%{normalized_query}%"
         try:
             count_stmt = (
                 select(func.count())
@@ -173,6 +178,13 @@ class SQLAlchemyScheduleItemRepository(BaseRepository[ScheduleItem]):
                 .where(ScheduleItem.owner_id == owner_id)
                 .where(ScheduleItem.deleted_at.is_(None))
             )
+            if has_query:
+                count_stmt = count_stmt.where(
+                    or_(
+                        ScheduleItem.title.ilike(query_like),
+                        ScheduleItem.description.ilike(query_like),
+                    )
+                )
             count_result = await self._session.execute(count_stmt)
             total = int(count_result.scalar_one() or 0)
 
@@ -184,6 +196,13 @@ class SQLAlchemyScheduleItemRepository(BaseRepository[ScheduleItem]):
                 .offset(offset)
                 .limit(page_size)
             )
+            if has_query:
+                items_stmt = items_stmt.where(
+                    or_(
+                        ScheduleItem.title.ilike(query_like),
+                        ScheduleItem.description.ilike(query_like),
+                    )
+                )
             items_result = await self._session.execute(items_stmt)
             items = list(items_result.scalars().all())
             return items, total

backend/src/v1/schedule_items/service.py

@@ -269,6 +269,7 @@ class ScheduleItemService(BaseService):
         *,
         page: int,
         page_size: int,
+        query: str | None = None,
     ) -> tuple[list[ScheduleItemResponse], int]:
         user_id = self.require_user_id()
         if page < 1:
@@ -280,6 +281,7 @@ class ScheduleItemService(BaseService):
                 user_id,
                 page=page,
                 page_size=page_size,
+                query=query,
             )
         except SQLAlchemyError:
             logger.exception(