refactor(sdk): isolate plugin query snapshots

app/application/data_query.py

@@ -10,19 +10,20 @@ from typing import Any, Callable, Generic, Protocol, TypeVar, cast
 from pydantic import BaseModel
 
 from app.application.database import AsyncDatabaseExecutor
-from app.schemas.history import DownloadHistory, TransferHistory
 from app.schemas.query import (
     DownloadHistoryFilter,
+    DownloadHistorySnapshot,
     QueryPage,
     QueryPageRequest,
-    SubscribeHistory,
     SubscriptionFilter,
     SubscriptionHistoryFilter,
+    SubscriptionHistorySnapshot,
+    SubscriptionSnapshot,
     TransferHistoryFilter,
+    TransferHistorySnapshot,
 )
-from app.schemas.subscribe import Subscribe
 
-RecordT = TypeVar("RecordT")
+RecordT = TypeVar("RecordT", covariant=True)
 DtoT = TypeVar("DtoT", bound=BaseModel)
 ResultT = TypeVar("ResultT")
 
@@ -176,7 +177,7 @@ class DataQueryService:
         self,
         filters: SubscriptionFilter | dict[str, Any] | None = None,
         page: QueryPageRequest | dict[str, Any] | None = None,
-    ) -> QueryPage[Subscribe]:
+    ) -> QueryPage[SubscriptionSnapshot]:
         """同步分页查询订阅。"""
         normalized_page = self._page_request(page)
         normalized_filters = self._filter(filters, SubscriptionFilter)
@@ -184,36 +185,35 @@ class DataQueryService:
             filters=normalized_filters,
             page=normalized_page,
         )
-        return self._to_page(Subscribe, normalized_page, rows)
+        return self._to_page(SubscriptionSnapshot, normalized_page, rows)
 
     async def async_list_subscriptions(
         self,
         filters: SubscriptionFilter | dict[str, Any] | None = None,
         page: QueryPageRequest | dict[str, Any] | None = None,
-    ) -> QueryPage[Subscribe]:
+    ) -> QueryPage[SubscriptionSnapshot]:
         """异步分页查询订阅，业务规则在数据库 worker 中复用同步入口。"""
-        return await self._async_run(
+        return await self._async_run(partial(self.list_subscriptions, filters, page))
-            partial(self.list_subscriptions, filters, page)
-        )
 
-    def get_subscription(self, subscription_id: int) -> Subscribe | None:
+    def get_subscription(self, subscription_id: int) -> SubscriptionSnapshot | None:
         """同步按 ID 查询订阅。"""
         return self._to_item(
-            Subscribe,
+            SubscriptionSnapshot,
             self._subscriptions.get_subscription(subscription_id),
         )
 
-    async def async_get_subscription(self, subscription_id: int) -> Subscribe | None:
+    async def async_get_subscription(
+        self,
+        subscription_id: int,
+    ) -> SubscriptionSnapshot | None:
         """异步按 ID 查询订阅。"""
-        return await self._async_run(
+        return await self._async_run(partial(self.get_subscription, subscription_id))
-            partial(self.get_subscription, subscription_id)
-        )
 
     def list_subscription_history(
         self,
         filters: SubscriptionHistoryFilter | dict[str, Any] | None = None,
         page: QueryPageRequest | dict[str, Any] | None = None,
-    ) -> QueryPage[SubscribeHistory]:
+    ) -> QueryPage[SubscriptionHistorySnapshot]:
         """同步分页查询订阅完成历史。"""
         normalized_page = self._page_request(page)
         normalized_filters = self._filter(filters, SubscriptionHistoryFilter)
@@ -221,39 +221,38 @@ class DataQueryService:
             filters=normalized_filters,
             page=normalized_page,
         )
-        return self._to_page(SubscribeHistory, normalized_page, rows)
+        return self._to_page(SubscriptionHistorySnapshot, normalized_page, rows)
 
     async def async_list_subscription_history(
         self,
         filters: SubscriptionHistoryFilter | dict[str, Any] | None = None,
         page: QueryPageRequest | dict[str, Any] | None = None,
-    ) -> QueryPage[SubscribeHistory]:
+    ) -> QueryPage[SubscriptionHistorySnapshot]:
         """异步分页查询订阅完成历史。"""
-        return await self._async_run(
+        return await self._async_run(partial(self.list_subscription_history, filters, page))
-            partial(self.list_subscription_history, filters, page)
-        )
 
-    def get_subscription_history(self, history_id: int) -> SubscribeHistory | None:
+    def get_subscription_history(
+        self,
+        history_id: int,
+    ) -> SubscriptionHistorySnapshot | None:
         """同步按 ID 查询订阅完成历史。"""
         return self._to_item(
-            SubscribeHistory,
+            SubscriptionHistorySnapshot,
             self._subscriptions.get_subscription_history(history_id),
         )
 
     async def async_get_subscription_history(
         self,
         history_id: int,
-    ) -> SubscribeHistory | None:
+    ) -> SubscriptionHistorySnapshot | None:
         """异步按 ID 查询订阅完成历史。"""
-        return await self._async_run(
+        return await self._async_run(partial(self.get_subscription_history, history_id))
-            partial(self.get_subscription_history, history_id)
-        )
 
     def list_download_history(
         self,
         filters: DownloadHistoryFilter | dict[str, Any] | None = None,
         page: QueryPageRequest | dict[str, Any] | None = None,
-    ) -> QueryPage[DownloadHistory]:
+    ) -> QueryPage[DownloadHistorySnapshot]:
         """同步分页查询下载历史。"""
         normalized_page = self._page_request(page)
         normalized_filters = self._filter(filters, DownloadHistoryFilter)
@@ -261,36 +260,35 @@ class DataQueryService:
             filters=normalized_filters,
             page=normalized_page,
         )
-        return self._to_page(DownloadHistory, normalized_page, rows)
+        return self._to_page(DownloadHistorySnapshot, normalized_page, rows)
 
     async def async_list_download_history(
         self,
         filters: DownloadHistoryFilter | dict[str, Any] | None = None,
         page: QueryPageRequest | dict[str, Any] | None = None,
-    ) -> QueryPage[DownloadHistory]:
+    ) -> QueryPage[DownloadHistorySnapshot]:
         """异步分页查询下载历史。"""
-        return await self._async_run(
+        return await self._async_run(partial(self.list_download_history, filters, page))
-            partial(self.list_download_history, filters, page)
-        )
 
-    def get_download_history(self, history_id: int) -> DownloadHistory | None:
+    def get_download_history(self, history_id: int) -> DownloadHistorySnapshot | None:
         """同步按 ID 查询下载历史。"""
         return self._to_item(
-            DownloadHistory,
+            DownloadHistorySnapshot,
             self._histories.get_download_history(history_id),
         )
 
-    async def async_get_download_history(self, history_id: int) -> DownloadHistory | None:
+    async def async_get_download_history(
+        self,
+        history_id: int,
+    ) -> DownloadHistorySnapshot | None:
         """异步按 ID 查询下载历史。"""
-        return await self._async_run(
+        return await self._async_run(partial(self.get_download_history, history_id))
-            partial(self.get_download_history, history_id)
-        )
 
     def list_transfer_history(
         self,
         filters: TransferHistoryFilter | dict[str, Any] | None = None,
         page: QueryPageRequest | dict[str, Any] | None = None,
-    ) -> QueryPage[TransferHistory]:
+    ) -> QueryPage[TransferHistorySnapshot]:
         """同步分页查询整理历史。"""
         normalized_page = self._page_request(page)
         normalized_filters = self._filter(filters, TransferHistoryFilter)
@@ -298,30 +296,29 @@ class DataQueryService:
             filters=normalized_filters,
             page=normalized_page,
         )
-        return self._to_page(TransferHistory, normalized_page, rows)
+        return self._to_page(TransferHistorySnapshot, normalized_page, rows)
 
     async def async_list_transfer_history(
         self,
         filters: TransferHistoryFilter | dict[str, Any] | None = None,
         page: QueryPageRequest | dict[str, Any] | None = None,
-    ) -> QueryPage[TransferHistory]:
+    ) -> QueryPage[TransferHistorySnapshot]:
         """异步分页查询整理历史。"""
-        return await self._async_run(
+        return await self._async_run(partial(self.list_transfer_history, filters, page))
-            partial(self.list_transfer_history, filters, page)
-        )
 
-    def get_transfer_history(self, history_id: int) -> TransferHistory | None:
+    def get_transfer_history(self, history_id: int) -> TransferHistorySnapshot | None:
         """同步按 ID 查询整理历史。"""
         return self._to_item(
-            TransferHistory,
+            TransferHistorySnapshot,
             self._histories.get_transfer_history(history_id),
         )
 
-    async def async_get_transfer_history(self, history_id: int) -> TransferHistory | None:
+    async def async_get_transfer_history(
+        self,
+        history_id: int,
+    ) -> TransferHistorySnapshot | None:
         """异步按 ID 查询整理历史。"""
-        return await self._async_run(
+        return await self._async_run(partial(self.get_transfer_history, history_id))
-            partial(self.get_transfer_history, history_id)
-        )
 
 
 _configured_data_query_service: DataQueryService | None = None

app/db/adapters/data_query.py

@@ -16,23 +16,19 @@ from app.db.models.downloadhistory import DownloadHistory
 from app.db.models.subscribe import Subscribe
 from app.db.models.subscribehistory import SubscribeHistory as SubscribeHistoryModel
 from app.db.models.transferhistory import TransferHistory
-from app.schemas.history import (
-    DownloadHistory as DownloadHistoryView,
-)
-from app.schemas.history import (
-    TransferHistory as TransferHistoryView,
-)
 from app.schemas.query import (
     DownloadHistoryFilter,
+    DownloadHistorySnapshot,
     QueryPageRequest,
     QuerySortDirection,
     QuerySortField,
     SubscriptionFilter,
     SubscriptionHistoryFilter,
+    SubscriptionHistorySnapshot,
+    SubscriptionSnapshot,
     TransferHistoryFilter,
+    TransferHistorySnapshot,
 )
-from app.schemas.query import SubscribeHistory as SubscribeHistoryView
-from app.schemas.subscribe import Subscribe as SubscribeView
 from app.schemas.types import MUSIC_ENTITY_RECORDING
 
 _ModelT = TypeVar("_ModelT", bound=Base)
@@ -168,7 +164,7 @@ class SqlAlchemyDataQueryAdapter:
         *,
         filters: SubscriptionFilter,
         page: QueryPageRequest,
-    ) -> QueryRows[SubscribeView]:
+    ) -> QueryRows[SubscriptionSnapshot]:
         """按受控组合条件分页查询当前订阅。"""
         query = filters
         conditions = self._identity_conditions(Subscribe, query)
@@ -196,16 +192,16 @@ class SqlAlchemyDataQueryAdapter:
             conditions.append(music_condition)
         return self._page(
             model=Subscribe,
-            view_model=SubscribeView,
+            view_model=SubscriptionSnapshot,
             conditions=conditions,
             page=page,
         )
 
-    def get_subscription(self, subscription_id: int) -> SubscribeView | None:
+    def get_subscription(self, subscription_id: int) -> SubscriptionSnapshot | None:
         """按主键查询订阅并返回脱离 Session 的 DTO。"""
         return self._get(
             model=Subscribe,
-            view_model=SubscribeView,
+            view_model=SubscriptionSnapshot,
             record_id=subscription_id,
         )
 
@@ -214,7 +210,7 @@ class SqlAlchemyDataQueryAdapter:
         *,
         filters: SubscriptionHistoryFilter,
         page: QueryPageRequest,
-    ) -> QueryRows[SubscribeHistoryView]:
+    ) -> QueryRows[SubscriptionHistorySnapshot]:
         """按受控组合条件分页查询订阅完成历史。"""
         query = filters
         conditions = self._identity_conditions(SubscribeHistoryModel, query)
@@ -242,7 +238,7 @@ class SqlAlchemyDataQueryAdapter:
             conditions.append(music_condition)
         return self._page(
             model=SubscribeHistoryModel,
-            view_model=SubscribeHistoryView,
+            view_model=SubscriptionHistorySnapshot,
             conditions=conditions,
             page=page,
         )
@@ -250,11 +246,11 @@ class SqlAlchemyDataQueryAdapter:
     def get_subscription_history(
         self,
         history_id: int,
-    ) -> SubscribeHistoryView | None:
+    ) -> SubscriptionHistorySnapshot | None:
         """按主键查询订阅完成历史并返回稳定 DTO。"""
         return self._get(
             model=SubscribeHistoryModel,
-            view_model=SubscribeHistoryView,
+            view_model=SubscriptionHistorySnapshot,
             record_id=history_id,
         )
 
@@ -263,7 +259,7 @@ class SqlAlchemyDataQueryAdapter:
         *,
         filters: DownloadHistoryFilter,
         page: QueryPageRequest,
-    ) -> QueryRows[DownloadHistoryView]:
+    ) -> QueryRows[DownloadHistorySnapshot]:
         """按受控组合条件分页查询下载历史。"""
         query = filters
         conditions = self._identity_conditions(DownloadHistory, query)
@@ -276,20 +272,23 @@ class SqlAlchemyDataQueryAdapter:
             conditions.append(DownloadHistory.type.in_(media_types))
         for column, value in (
             (DownloadHistory.title, query.title),
-            (DownloadHistory.path, query.path),
-        ):
-            if value:
-                conditions.append(_contains(column, value))
-        for column, value in (
             (DownloadHistory.year, query.year),
             (DownloadHistory.seasons, query.seasons),
             (DownloadHistory.episodes, query.episodes),
+            (DownloadHistory.path, query.path),
             (DownloadHistory.download_hash, query.download_hash),
             (DownloadHistory.username, query.username),
             (DownloadHistory.episode_group, query.episode_group),
         ):
             if value is not None and value != "":
                 conditions.append(column == value)
+        if query.text:
+            conditions.append(
+                or_(
+                    _contains(DownloadHistory.title, query.text),
+                    _contains(DownloadHistory.path, query.text),
+                )
+            )
         if usernames:
             conditions.append(DownloadHistory.username.in_(usernames))
         music_condition = _music_type_condition(DownloadHistory.music_type, query.music_type)
@@ -297,16 +296,16 @@ class SqlAlchemyDataQueryAdapter:
             conditions.append(music_condition)
         return self._page(
             model=DownloadHistory,
-            view_model=DownloadHistoryView,
+            view_model=DownloadHistorySnapshot,
             conditions=conditions,
             page=page,
         )
 
-    def get_download_history(self, history_id: int) -> DownloadHistoryView | None:
+    def get_download_history(self, history_id: int) -> DownloadHistorySnapshot | None:
         """按主键查询下载历史并返回稳定 DTO。"""
         return self._get(
             model=DownloadHistory,
-            view_model=DownloadHistoryView,
+            view_model=DownloadHistorySnapshot,
             record_id=history_id,
         )
 
@@ -315,7 +314,7 @@ class SqlAlchemyDataQueryAdapter:
         *,
         filters: TransferHistoryFilter,
         page: QueryPageRequest,
-    ) -> QueryRows[TransferHistoryView]:
+    ) -> QueryRows[TransferHistorySnapshot]:
         """按受控组合条件分页查询整理历史。"""
         query = filters
         conditions = self._identity_conditions(TransferHistory, query)
@@ -331,7 +330,7 @@ class SqlAlchemyDataQueryAdapter:
         if query.require_media_identity:
             conditions.extend(self._require_media_identity(TransferHistory))
         if query.title:
-            conditions.append(_contains(TransferHistory.title, query.title))
+            conditions.append(TransferHistory.title == query.title)
         if query.text:
             conditions.append(
                 or_(
@@ -358,16 +357,16 @@ class SqlAlchemyDataQueryAdapter:
             conditions.append(music_condition)
         return self._page(
             model=TransferHistory,
-            view_model=TransferHistoryView,
+            view_model=TransferHistorySnapshot,
             conditions=conditions,
             page=page,
         )
 
-    def get_transfer_history(self, history_id: int) -> TransferHistoryView | None:
+    def get_transfer_history(self, history_id: int) -> TransferHistorySnapshot | None:
         """按主键查询整理历史并返回稳定 DTO。"""
         return self._get(
             model=TransferHistory,
-            view_model=TransferHistoryView,
+            view_model=TransferHistorySnapshot,
             record_id=history_id,
         )
 

app/schemas/query.py

@@ -1,14 +1,12 @@
 """插件只读数据查询使用的稳定筛选、分页与数据投影合同。"""
 
 from enum import Enum
-from typing import Generic, Optional, TypeVar
+from typing import Any, Generic, Optional, TypeVar
 
-from pydantic import BaseModel, ConfigDict, Field
+from pydantic import BaseModel, ConfigDict, Field, field_validator, model_validator
 
 from app.schemas.common import JsonData
-from app.schemas.history import DownloadHistory, TransferHistory
+from app.schemas.media import OptionalMediaIdentityMixin, normalize_media_source
-from app.schemas.media import OptionalMediaIdentityMixin
-from app.schemas.subscribe import Subscribe
 from app.schemas.types import MediaSource, MediaType
 
 T = TypeVar("T")
@@ -17,7 +15,7 @@ DEFAULT_QUERY_PAGE_SIZE = 50
 MAX_QUERY_PAGE_SIZE = 200
 
 
-class _QueryInput(BaseModel):
+class _QueryInput(BaseModel):  # type: ignore[misc]  # Pydantic imports are skipped by strict mypy
     """查询输入共同的严格字段合同。"""
 
     model_config = ConfigDict(extra="forbid")
@@ -56,7 +54,7 @@ class QueryPageRequest(_QueryInput):
     sort: QuerySort = Field(default_factory=QuerySort)
 
 
-class QueryPage(BaseModel, Generic[T]):
+class QueryPage(BaseModel, Generic[T]):  # type: ignore[misc]  # Pydantic imports are skipped by strict mypy
     """公开查询返回的分页 DTO。"""
 
     items: list[T] = Field(default_factory=list)
@@ -74,23 +72,105 @@ class QueryPage(BaseModel, Generic[T]):
         return self.page * self.count < self.total
 
 
-class MediaIdentityQuery(OptionalMediaIdentityMixin, _QueryInput):
+class MediaIdentityQuery(
+    OptionalMediaIdentityMixin,
+    _QueryInput,
+):
     """允许省略身份，但显式筛选时要求来源与原生 ID 成对有效。"""
 
     media_source: Optional[MediaSource] = None
     media_id: Optional[str] = None
 
 
-class SubscribeHistory(OptionalMediaIdentityMixin, BaseModel):
+class _QuerySnapshot(BaseModel):  # type: ignore[misc]  # Pydantic imports are skipped by strict mypy
-    """订阅完成历史的稳定只读投影。"""
+    """只读查询 DTO 的媒体身份与脏数据归一化边界。"""
+
+    media_source: Optional[MediaSource] = None
+    media_id: Optional[str] = None
+
+    model_config = ConfigDict(from_attributes=True)
+
+    @field_validator("media_source", mode="before")  # type: ignore[misc]
+    @classmethod
+    def _normalize_source(cls, value: Any) -> Optional[MediaSource]:
+        """未知旧来源不应使整页查询失败，统一降级为空身份。"""
+        return normalize_media_source(value)
+
+    @model_validator(mode="after")  # type: ignore[misc]
+    def _normalize_identity_pair(self) -> "_QuerySnapshot":
+        """输出中的脏半对身份按无身份处理，避免向插件传播不可用主键。"""
+        normalized_id = str(self.media_id).strip() if self.media_id is not None else ""
+        if not self.media_source or not normalized_id or normalized_id == "0":
+            object.__setattr__(self, "media_source", None)
+            object.__setattr__(self, "media_id", None)
+        else:
+            object.__setattr__(self, "media_id", normalized_id)
+        return self
+
+
+class SubscriptionSnapshot(_QuerySnapshot):
+    """当前订阅的稳定只读快照，不包含 ORM 或写入行为。"""
+
+    id: int
+    name: Optional[str] = None
+    year: Optional[str] = None
+    type: Optional[str] = None
+    keyword: Optional[str] = None
+    music_type: Optional[str] = None
+    total_tracks: Optional[int] = None
+    season: Optional[int] = None
+    poster: Optional[str] = None
+    backdrop: Optional[str] = None
+    vote: Optional[float] = None
+    description: Optional[str] = None
+    # 资源选择规则与质量约束均按宿主保存值只读返回。
+    filter: Optional[str] = None
+    include: Optional[str] = None
+    exclude: Optional[str] = None
+    quality: Optional[str] = None
+    resolution: Optional[str] = None
+    effect: Optional[str] = None
+    audio_quality: Optional[str] = None
+    audio_format: Optional[str] = None
+    min_bitrate: Optional[int] = None
+    min_bit_depth: Optional[int] = None
+    min_sample_rate: Optional[int] = None
+    # 订阅进度字段由宿主维护，插件查询不得据此直接写库。
+    total_episode: Optional[int] = None
+    start_episode: Optional[int] = None
+    lack_episode: Optional[int] = None
+    note: Optional[JsonData] = None
+    state: Optional[str] = None
+    last_update: Optional[str] = None
+    date: Optional[str] = None
+    username: Optional[str] = None
+    sites: Optional[list[int]] = None
+    downloader: Optional[str] = None
+    best_version: Optional[int] = None
+    best_version_full: Optional[int] = None
+    current_priority: Optional[int] = None
+    current_audio_format: Optional[str] = None
+    current_bitrate: Optional[int] = None
+    current_bit_depth: Optional[int] = None
+    current_sample_rate: Optional[int] = None
+    episode_priority: Optional[dict[str, int]] = None
+    save_path: Optional[str] = None
+    search_imdbid: Optional[int] = None
+    manual_total_episode: Optional[int] = None
+    custom_words: Optional[str] = None
+    media_category: Optional[str] = None
+    filter_groups: Optional[list[str]] = None
+    episode_group: Optional[str] = None
+
+
+class SubscriptionHistorySnapshot(_QuerySnapshot):
+    """订阅完成历史的稳定只读快照。"""
 
     id: int
     name: Optional[str] = None
     year: Optional[str] = None
     type: Optional[str] = None
     keyword: Optional[str] = None
-    media_source: Optional[MediaSource] = None
-    media_id: Optional[str] = None
     music_type: Optional[str] = None
     total_tracks: Optional[int] = None
     season: Optional[int] = None
@@ -124,13 +204,78 @@ class SubscribeHistory(OptionalMediaIdentityMixin, BaseModel):
     episode_priority: Optional[dict[str, int]] = None
     save_path: Optional[str] = None
     search_imdbid: Optional[int] = None
-    note: Optional[JsonData] = None
     custom_words: Optional[str] = None
     media_category: Optional[str] = None
     filter_groups: Optional[list[str]] = None
     episode_group: Optional[str] = None
 
-    model_config = ConfigDict(from_attributes=True)
+
+class DownloadHistorySnapshot(_QuerySnapshot):
+    """下载历史的稳定只读快照。"""
+
+    id: int
+    path: Optional[str] = None
+    type: Optional[str] = None
+    title: Optional[str] = None
+    year: Optional[str] = None
+    music_type: Optional[str] = None
+    seasons: Optional[str] = None
+    episodes: Optional[str] = None
+    image: Optional[str] = None
+    poster: Optional[str] = None
+    downloader: Optional[str] = None
+    download_hash: Optional[str] = None
+    torrent_name: Optional[str] = None
+    torrent_description: Optional[str] = None
+    torrent_site: Optional[str] = None
+    userid: Optional[str] = None
+    username: Optional[str] = None
+    channel: Optional[str] = None
+    date: Optional[str] = None
+    note: Optional[JsonData] = None
+    media_category: Optional[str] = None
+    episode_group: Optional[str] = None
+    custom_words: Optional[str] = None
+
+
+class TransferHistorySnapshot(_QuerySnapshot):
+    """整理历史的稳定只读快照；内部任务结算标识不会暴露给插件。"""
+
+    id: int
+    src: Optional[str] = None
+    src_storage: Optional[str] = None
+    src_fileitem: Optional[JsonData] = None
+    dest: Optional[str] = None
+    dest_storage: Optional[str] = None
+    dest_fileitem: Optional[JsonData] = None
+    mode: Optional[str] = None
+    type: Optional[str] = None
+    category: Optional[str] = None
+    title: Optional[str] = None
+    year: Optional[str] = None
+    music_type: Optional[str] = None
+    total_tracks: Optional[int] = None
+    audio_format: Optional[str] = None
+    audio_lossless: Optional[bool] = None
+    bit_depth: Optional[int] = None
+    sample_rate: Optional[int] = None
+    bitrate: Optional[int] = None
+    seasons: Optional[str] = None
+    episodes: Optional[str] = None
+    image: Optional[str] = None
+    downloader: Optional[str] = None
+    download_hash: Optional[str] = None
+    status: bool = False
+    errmsg: Optional[str] = None
+    date: Optional[str] = None
+    files: Optional[JsonData] = None
+    episode_group: Optional[str] = None
+
+    @field_validator("status", mode="before")  # type: ignore[misc]
+    @classmethod
+    def _normalize_status(cls, value: object) -> bool:
+        """旧记录的 NULL 状态按失败处理，避免错误地向插件声明整理成功。"""
+        return bool(value)
 
 
 class SubscriptionFilter(MediaIdentityQuery):
@@ -164,6 +309,7 @@ class DownloadHistoryFilter(MediaIdentityQuery):
     ids: tuple[int, ...] = ()
     media_types: tuple[MediaType, ...] = ()
     title: Optional[str] = None
+    text: Optional[str] = None
     year: Optional[str] = None
     seasons: Optional[str] = None
     episodes: Optional[str] = None
@@ -198,18 +344,18 @@ class TransferHistoryFilter(MediaIdentityQuery):
 __all__ = [
     "DEFAULT_QUERY_PAGE_SIZE",
     "MAX_QUERY_PAGE_SIZE",
-    "DownloadHistory",
     "DownloadHistoryFilter",
+    "DownloadHistorySnapshot",
     "MediaIdentityQuery",
     "QueryPage",
     "QueryPageRequest",
     "QuerySort",
     "QuerySortDirection",
     "QuerySortField",
-    "Subscribe",
-    "SubscribeHistory",
     "SubscriptionFilter",
+    "SubscriptionHistorySnapshot",
     "SubscriptionHistoryFilter",
-    "TransferHistory",
+    "SubscriptionSnapshot",
     "TransferHistoryFilter",
+    "TransferHistorySnapshot",
 ]

app/sdk/queries.py

@@ -2,41 +2,133 @@
 
 from __future__ import annotations
 
-from typing import Any
+from typing import Any, Protocol, cast
 
 from app.schemas.query import (
     DEFAULT_QUERY_PAGE_SIZE,
     MAX_QUERY_PAGE_SIZE,
-    DownloadHistory,
     DownloadHistoryFilter,
+    DownloadHistorySnapshot,
     MediaIdentityQuery,
     QueryPage,
     QueryPageRequest,
     QuerySort,
     QuerySortDirection,
     QuerySortField,
-    Subscribe,
-    SubscribeHistory,
     SubscriptionFilter,
     SubscriptionHistoryFilter,
-    TransferHistory,
+    SubscriptionHistorySnapshot,
+    SubscriptionSnapshot,
     TransferHistoryFilter,
+    TransferHistorySnapshot,
 )
 
 
-def _service() -> Any:
+class _DataQueryBackend(Protocol):
+    """SDK 转发所需的最小类型合同，不向插件公开应用服务实现。"""
+
+    def list_subscriptions(
+        self,
+        filters: SubscriptionFilter | dict[str, Any] | None = None,
+        page: QueryPageRequest | dict[str, Any] | None = None,
+    ) -> QueryPage[SubscriptionSnapshot]: ...
+
+    async def async_list_subscriptions(
+        self,
+        filters: SubscriptionFilter | dict[str, Any] | None = None,
+        page: QueryPageRequest | dict[str, Any] | None = None,
+    ) -> QueryPage[SubscriptionSnapshot]: ...
+
+    def get_subscription(
+        self,
+        subscription_id: int,
+    ) -> SubscriptionSnapshot | None: ...
+
+    async def async_get_subscription(
+        self,
+        subscription_id: int,
+    ) -> SubscriptionSnapshot | None: ...
+
+    def list_subscription_history(
+        self,
+        filters: SubscriptionHistoryFilter | dict[str, Any] | None = None,
+        page: QueryPageRequest | dict[str, Any] | None = None,
+    ) -> QueryPage[SubscriptionHistorySnapshot]: ...
+
+    async def async_list_subscription_history(
+        self,
+        filters: SubscriptionHistoryFilter | dict[str, Any] | None = None,
+        page: QueryPageRequest | dict[str, Any] | None = None,
+    ) -> QueryPage[SubscriptionHistorySnapshot]: ...
+
+    def get_subscription_history(
+        self,
+        history_id: int,
+    ) -> SubscriptionHistorySnapshot | None: ...
+
+    async def async_get_subscription_history(
+        self,
+        history_id: int,
+    ) -> SubscriptionHistorySnapshot | None: ...
+
+    def list_download_history(
+        self,
+        filters: DownloadHistoryFilter | dict[str, Any] | None = None,
+        page: QueryPageRequest | dict[str, Any] | None = None,
+    ) -> QueryPage[DownloadHistorySnapshot]: ...
+
+    async def async_list_download_history(
+        self,
+        filters: DownloadHistoryFilter | dict[str, Any] | None = None,
+        page: QueryPageRequest | dict[str, Any] | None = None,
+    ) -> QueryPage[DownloadHistorySnapshot]: ...
+
+    def get_download_history(
+        self,
+        history_id: int,
+    ) -> DownloadHistorySnapshot | None: ...
+
+    async def async_get_download_history(
+        self,
+        history_id: int,
+    ) -> DownloadHistorySnapshot | None: ...
+
+    def list_transfer_history(
+        self,
+        filters: TransferHistoryFilter | dict[str, Any] | None = None,
+        page: QueryPageRequest | dict[str, Any] | None = None,
+    ) -> QueryPage[TransferHistorySnapshot]: ...
+
+    async def async_list_transfer_history(
+        self,
+        filters: TransferHistoryFilter | dict[str, Any] | None = None,
+        page: QueryPageRequest | dict[str, Any] | None = None,
+    ) -> QueryPage[TransferHistorySnapshot]: ...
+
+    def get_transfer_history(
+        self,
+        history_id: int,
+    ) -> TransferHistorySnapshot | None: ...
+
+    async def async_get_transfer_history(
+        self,
+        history_id: int,
+    ) -> TransferHistorySnapshot | None: ...
+
+
+def _service() -> _DataQueryBackend:
     """获取启动阶段登记的查询服务，避免把应用服务暴露为 SDK 合同。"""
     from app.application.data_query import (
         get_configured_data_query_service,
     )
 
-    return get_configured_data_query_service()
+    return cast(_DataQueryBackend, get_configured_data_query_service())
 
 
 def list_subscriptions(
     filters: SubscriptionFilter | dict[str, Any] | None = None,
     page: QueryPageRequest | dict[str, Any] | None = None,
-) -> QueryPage[Subscribe]:
+) -> QueryPage[SubscriptionSnapshot]:
     """同步分页读取订阅 DTO。"""
     return _service().list_subscriptions(filters, page)
 
@@ -44,17 +136,19 @@ def list_subscriptions(
 async def async_list_subscriptions(
     filters: SubscriptionFilter | dict[str, Any] | None = None,
     page: QueryPageRequest | dict[str, Any] | None = None,
-) -> QueryPage[Subscribe]:
+) -> QueryPage[SubscriptionSnapshot]:
     """异步分页读取订阅 DTO。"""
     return await _service().async_list_subscriptions(filters, page)
 
 
-def get_subscription(subscription_id: int) -> Subscribe | None:
+def get_subscription(subscription_id: int) -> SubscriptionSnapshot | None:
     """同步按 ID 读取订阅 DTO。"""
     return _service().get_subscription(subscription_id)
 
 
-async def async_get_subscription(subscription_id: int) -> Subscribe | None:
+async def async_get_subscription(
+    subscription_id: int,
+) -> SubscriptionSnapshot | None:
     """异步按 ID 读取订阅 DTO。"""
     return await _service().async_get_subscription(subscription_id)
 
@@ -62,7 +156,7 @@ async def async_get_subscription(subscription_id: int) -> Subscribe | None:
 def list_subscription_history(
     filters: SubscriptionHistoryFilter | dict[str, Any] | None = None,
     page: QueryPageRequest | dict[str, Any] | None = None,
-) -> QueryPage[SubscribeHistory]:
+) -> QueryPage[SubscriptionHistorySnapshot]:
     """同步分页读取订阅完成历史 DTO。"""
     return _service().list_subscription_history(filters, page)
 
@@ -70,17 +164,19 @@ def list_subscription_history(
 async def async_list_subscription_history(
     filters: SubscriptionHistoryFilter | dict[str, Any] | None = None,
     page: QueryPageRequest | dict[str, Any] | None = None,
-) -> QueryPage[SubscribeHistory]:
+) -> QueryPage[SubscriptionHistorySnapshot]:
     """异步分页读取订阅完成历史 DTO。"""
     return await _service().async_list_subscription_history(filters, page)
 
 
-def get_subscription_history(history_id: int) -> SubscribeHistory | None:
+def get_subscription_history(history_id: int) -> SubscriptionHistorySnapshot | None:
     """同步按 ID 读取订阅完成历史 DTO。"""
     return _service().get_subscription_history(history_id)
 
 
-async def async_get_subscription_history(history_id: int) -> SubscribeHistory | None:
+async def async_get_subscription_history(
+    history_id: int,
+) -> SubscriptionHistorySnapshot | None:
     """异步按 ID 读取订阅完成历史 DTO。"""
     return await _service().async_get_subscription_history(history_id)
 
@@ -88,7 +184,7 @@ async def async_get_subscription_history(history_id: int) -> SubscribeHistory |
 def list_download_history(
     filters: DownloadHistoryFilter | dict[str, Any] | None = None,
     page: QueryPageRequest | dict[str, Any] | None = None,
-) -> QueryPage[DownloadHistory]:
+) -> QueryPage[DownloadHistorySnapshot]:
     """同步分页读取下载历史 DTO。"""
     return _service().list_download_history(filters, page)
 
@@ -96,17 +192,19 @@ def list_download_history(
 async def async_list_download_history(
     filters: DownloadHistoryFilter | dict[str, Any] | None = None,
     page: QueryPageRequest | dict[str, Any] | None = None,
-) -> QueryPage[DownloadHistory]:
+) -> QueryPage[DownloadHistorySnapshot]:
     """异步分页读取下载历史 DTO。"""
     return await _service().async_list_download_history(filters, page)
 
 
-def get_download_history(history_id: int) -> DownloadHistory | None:
+def get_download_history(history_id: int) -> DownloadHistorySnapshot | None:
     """同步按 ID 读取下载历史 DTO。"""
     return _service().get_download_history(history_id)
 
 
-async def async_get_download_history(history_id: int) -> DownloadHistory | None:
+async def async_get_download_history(
+    history_id: int,
+) -> DownloadHistorySnapshot | None:
     """异步按 ID 读取下载历史 DTO。"""
     return await _service().async_get_download_history(history_id)
 
@@ -114,7 +212,7 @@ async def async_get_download_history(history_id: int) -> DownloadHistory | None:
 def list_transfer_history(
     filters: TransferHistoryFilter | dict[str, Any] | None = None,
     page: QueryPageRequest | dict[str, Any] | None = None,
-) -> QueryPage[TransferHistory]:
+) -> QueryPage[TransferHistorySnapshot]:
     """同步分页读取整理历史 DTO。"""
     return _service().list_transfer_history(filters, page)
 
@@ -122,17 +220,19 @@ def list_transfer_history(
 async def async_list_transfer_history(
     filters: TransferHistoryFilter | dict[str, Any] | None = None,
     page: QueryPageRequest | dict[str, Any] | None = None,
-) -> QueryPage[TransferHistory]:
+) -> QueryPage[TransferHistorySnapshot]:
     """异步分页读取整理历史 DTO。"""
     return await _service().async_list_transfer_history(filters, page)
 
 
-def get_transfer_history(history_id: int) -> TransferHistory | None:
+def get_transfer_history(history_id: int) -> TransferHistorySnapshot | None:
     """同步按 ID 读取整理历史 DTO。"""
     return _service().get_transfer_history(history_id)
 
 
-async def async_get_transfer_history(history_id: int) -> TransferHistory | None:
+async def async_get_transfer_history(
+    history_id: int,
+) -> TransferHistorySnapshot | None:
     """异步按 ID 读取整理历史 DTO。"""
     return await _service().async_get_transfer_history(history_id)
 
@@ -140,20 +240,20 @@ async def async_get_transfer_history(history_id: int) -> TransferHistory | None:
 __all__ = [
     "DEFAULT_QUERY_PAGE_SIZE",
     "MAX_QUERY_PAGE_SIZE",
-    "DownloadHistory",
     "DownloadHistoryFilter",
+    "DownloadHistorySnapshot",
     "MediaIdentityQuery",
     "QueryPage",
     "QueryPageRequest",
     "QuerySort",
     "QuerySortDirection",
     "QuerySortField",
-    "Subscribe",
-    "SubscribeHistory",
     "SubscriptionFilter",
     "SubscriptionHistoryFilter",
-    "TransferHistory",
+    "SubscriptionHistorySnapshot",
+    "SubscriptionSnapshot",
     "TransferHistoryFilter",
+    "TransferHistorySnapshot",
     "async_get_download_history",
     "async_get_subscription",
     "async_get_subscription_history",

tests/fixtures/architecture/dependency-baseline.json

@@ -1441,8 +1441,8 @@
       "runtime_only": true
     }
   },
-  "edge_count": 6898,
+  "edge_count": 6924,
-  "edge_sha256": "c73faf7e29ee12a862cf2332f1803fd4eb8a3f4d2994ed81075ff198e896f8df",
+  "edge_sha256": "d5471439086bcfdd8060b77670af6f821a34e3a864ba7e2cb7230c599a1cb3bb",
   "edges": [
     "app -> app.runtime",
     "app -> app.runtime.compat",
@@ -4008,6 +4008,10 @@
     "app.application.configuration -> app.schemas.types",
     "app.application.dashboard -> app.schemas",
     "app.application.dashboard -> app.schemas.dashboard",
+    "app.application.data_query -> app.application",
+    "app.application.data_query -> app.application.database",
+    "app.application.data_query -> app.schemas",
+    "app.application.data_query -> app.schemas.query",
     "app.application.directory -> app.adapters",
     "app.application.directory -> app.adapters.system",
     "app.application.directory -> app.adapters.system.host",
@@ -5131,6 +5135,18 @@
     "app.db.adapters.chain -> app.db.oper.transferpending",
     "app.db.adapters.chain -> app.db.oper.transfersettlementreceipt",
     "app.db.adapters.chain -> app.db.uow",
+    "app.db.adapters.data_query -> app.application",
+    "app.db.adapters.data_query -> app.application.data_query",
+    "app.db.adapters.data_query -> app.db",
+    "app.db.adapters.data_query -> app.db.base",
+    "app.db.adapters.data_query -> app.db.models",
+    "app.db.adapters.data_query -> app.db.models.downloadhistory",
+    "app.db.adapters.data_query -> app.db.models.subscribe",
+    "app.db.adapters.data_query -> app.db.models.subscribehistory",
+    "app.db.adapters.data_query -> app.db.models.transferhistory",
+    "app.db.adapters.data_query -> app.schemas",
+    "app.db.adapters.data_query -> app.schemas.query",
+    "app.db.adapters.data_query -> app.schemas.types",
     "app.db.adapters.download -> app.db",
     "app.db.adapters.download -> app.db.oper",
     "app.db.adapters.download -> app.db.oper.downloadfailure",
@@ -7629,6 +7645,10 @@
     "app.schemas.openai -> app.schemas.common",
     "app.schemas.plugin -> app.schemas",
     "app.schemas.plugin -> app.schemas.common",
+    "app.schemas.query -> app.schemas",
+    "app.schemas.query -> app.schemas.common",
+    "app.schemas.query -> app.schemas.media",
+    "app.schemas.query -> app.schemas.types",
     "app.schemas.response -> app.runtime",
     "app.schemas.response -> app.runtime.localization",
     "app.schemas.search -> app.schemas",
@@ -7748,6 +7768,10 @@
     "app.sdk.plugins -> app.runtime.extensions",
     "app.sdk.plugins -> app.runtime.extensions.module_manager",
     "app.sdk.plugins -> app.runtime.extensions.plugin_manager",
+    "app.sdk.queries -> app.application",
+    "app.sdk.queries -> app.application.data_query",
+    "app.sdk.queries -> app.schemas",
+    "app.sdk.queries -> app.schemas.query",
     "app.sdk.security -> app.adapters",
     "app.sdk.security -> app.adapters.web",
     "app.sdk.security -> app.adapters.web.security",
@@ -7929,6 +7953,7 @@
     "app.startup.initializers.modules -> app.application.chain.data",
     "app.startup.initializers.modules -> app.application.chain.events",
     "app.startup.initializers.modules -> app.application.configuration",
+    "app.startup.initializers.modules -> app.application.data_query",
     "app.startup.initializers.modules -> app.application.database",
     "app.startup.initializers.modules -> app.application.history",
     "app.startup.initializers.modules -> app.application.image",
@@ -7971,6 +7996,7 @@
     "app.startup.initializers.modules -> app.db",
     "app.startup.initializers.modules -> app.db.adapters",
     "app.startup.initializers.modules -> app.db.adapters.chain",
+    "app.startup.initializers.modules -> app.db.adapters.data_query",
     "app.startup.initializers.modules -> app.db.adapters.download",
     "app.startup.initializers.modules -> app.db.adapters.outbox",
     "app.startup.initializers.modules -> app.db.adapters.pluginidentity",
@@ -8343,7 +8369,7 @@
     "app.workflow.actions.transfer_file -> app.workflow",
     "app.workflow.actions.transfer_file -> app.workflow.actions"
   ],
-  "module_count": 844,
+  "module_count": 848,
   "modules": [
     "app",
     "app.adapters",
@@ -8603,6 +8629,7 @@
     "app.application.commands",
     "app.application.configuration",
     "app.application.dashboard",
+    "app.application.data_query",
     "app.application.database",
     "app.application.directory",
     "app.application.download",
@@ -8735,6 +8762,7 @@
     "app.db",
     "app.db.adapters",
     "app.db.adapters.chain",
+    "app.db.adapters.data_query",
     "app.db.adapters.download",
     "app.db.adapters.outbox",
     "app.db.adapters.pluginidentity",
@@ -9111,6 +9139,7 @@
     "app.schemas.notification",
     "app.schemas.openai",
     "app.schemas.plugin",
+    "app.schemas.query",
     "app.schemas.response",
     "app.schemas.rule",
     "app.schemas.search",
@@ -9142,6 +9171,7 @@
     "app.sdk.media",
     "app.sdk.network",
     "app.sdk.plugins",
+    "app.sdk.queries",
     "app.sdk.security",
     "app.sdk.services",
     "app.sdk.string",

tests/fixtures/architecture/runtime-contract-baseline.json

@@ -10174,6 +10174,168 @@
         "target": "app.runtime.extensions.plugin_manager.PluginManager"
       }
     ],
+    "app.sdk.queries": [
+      {
+        "kind": "import",
+        "name": "DEFAULT_QUERY_PAGE_SIZE",
+        "target": "app.schemas.query.DEFAULT_QUERY_PAGE_SIZE"
+      },
+      {
+        "kind": "import",
+        "name": "DownloadHistoryFilter",
+        "target": "app.schemas.query.DownloadHistoryFilter"
+      },
+      {
+        "kind": "import",
+        "name": "DownloadHistorySnapshot",
+        "target": "app.schemas.query.DownloadHistorySnapshot"
+      },
+      {
+        "kind": "import",
+        "name": "MAX_QUERY_PAGE_SIZE",
+        "target": "app.schemas.query.MAX_QUERY_PAGE_SIZE"
+      },
+      {
+        "kind": "import",
+        "name": "MediaIdentityQuery",
+        "target": "app.schemas.query.MediaIdentityQuery"
+      },
+      {
+        "kind": "import",
+        "name": "QueryPage",
+        "target": "app.schemas.query.QueryPage"
+      },
+      {
+        "kind": "import",
+        "name": "QueryPageRequest",
+        "target": "app.schemas.query.QueryPageRequest"
+      },
+      {
+        "kind": "import",
+        "name": "QuerySort",
+        "target": "app.schemas.query.QuerySort"
+      },
+      {
+        "kind": "import",
+        "name": "QuerySortDirection",
+        "target": "app.schemas.query.QuerySortDirection"
+      },
+      {
+        "kind": "import",
+        "name": "QuerySortField",
+        "target": "app.schemas.query.QuerySortField"
+      },
+      {
+        "kind": "import",
+        "name": "SubscriptionFilter",
+        "target": "app.schemas.query.SubscriptionFilter"
+      },
+      {
+        "kind": "import",
+        "name": "SubscriptionHistoryFilter",
+        "target": "app.schemas.query.SubscriptionHistoryFilter"
+      },
+      {
+        "kind": "import",
+        "name": "SubscriptionHistorySnapshot",
+        "target": "app.schemas.query.SubscriptionHistorySnapshot"
+      },
+      {
+        "kind": "import",
+        "name": "SubscriptionSnapshot",
+        "target": "app.schemas.query.SubscriptionSnapshot"
+      },
+      {
+        "kind": "import",
+        "name": "TransferHistoryFilter",
+        "target": "app.schemas.query.TransferHistoryFilter"
+      },
+      {
+        "kind": "import",
+        "name": "TransferHistorySnapshot",
+        "target": "app.schemas.query.TransferHistorySnapshot"
+      },
+      {
+        "kind": "AsyncFunctionDef",
+        "name": "async_get_download_history",
+        "target": ""
+      },
+      {
+        "kind": "AsyncFunctionDef",
+        "name": "async_get_subscription",
+        "target": ""
+      },
+      {
+        "kind": "AsyncFunctionDef",
+        "name": "async_get_subscription_history",
+        "target": ""
+      },
+      {
+        "kind": "AsyncFunctionDef",
+        "name": "async_get_transfer_history",
+        "target": ""
+      },
+      {
+        "kind": "AsyncFunctionDef",
+        "name": "async_list_download_history",
+        "target": ""
+      },
+      {
+        "kind": "AsyncFunctionDef",
+        "name": "async_list_subscription_history",
+        "target": ""
+      },
+      {
+        "kind": "AsyncFunctionDef",
+        "name": "async_list_subscriptions",
+        "target": ""
+      },
+      {
+        "kind": "AsyncFunctionDef",
+        "name": "async_list_transfer_history",
+        "target": ""
+      },
+      {
+        "kind": "FunctionDef",
+        "name": "get_download_history",
+        "target": ""
+      },
+      {
+        "kind": "FunctionDef",
+        "name": "get_subscription",
+        "target": ""
+      },
+      {
+        "kind": "FunctionDef",
+        "name": "get_subscription_history",
+        "target": ""
+      },
+      {
+        "kind": "FunctionDef",
+        "name": "get_transfer_history",
+        "target": ""
+      },
+      {
+        "kind": "FunctionDef",
+        "name": "list_download_history",
+        "target": ""
+      },
+      {
+        "kind": "FunctionDef",
+        "name": "list_subscription_history",
+        "target": ""
+      },
+      {
+        "kind": "FunctionDef",
+        "name": "list_subscriptions",
+        "target": ""
+      },
+      {
+        "kind": "FunctionDef",
+        "name": "list_transfer_history",
+        "target": ""
+      }
+    ],
     "app.sdk.security": [
       {
         "kind": "import",

tests/test_sdk_queries.py

@@ -11,6 +11,7 @@ import asyncio
 import inspect
 import threading
 from collections.abc import Callable
+from types import SimpleNamespace
 from typing import Any
 
 import pytest
@@ -19,26 +20,23 @@ from app.db.models.downloadhistory import DownloadHistory as DownloadHistoryMode
 from app.db.models.subscribe import Subscribe as SubscribeModel
 from app.db.models.subscribehistory import SubscribeHistory as SubscribeHistoryModel
 from app.db.models.transferhistory import TransferHistory as TransferHistoryModel
-from app.schemas.history import (
-    DownloadHistory as DownloadHistoryDTO,
-    TransferHistory as TransferHistoryDTO,
-)
 from app.schemas.query import (
     DownloadHistoryFilter,
+    DownloadHistorySnapshot,
     QueryPage,
     QueryPageRequest,
     QuerySort,
     QuerySortDirection,
     QuerySortField,
-    SubscribeHistory as SubscribeHistoryDTO,
     SubscriptionFilter,
     SubscriptionHistoryFilter,
+    SubscriptionHistorySnapshot,
+    SubscriptionSnapshot,
     TransferHistoryFilter,
+    TransferHistorySnapshot,
 )
-from app.schemas.subscribe import Subscribe as SubscribeDTO
 from app.schemas.types import MediaSource, MediaType
 
-
 TMDB = MediaSource.TMDB.value
 
 
@@ -95,6 +93,7 @@ def _subscribe(
     episode_group: str | None = None,
     date: str = "2026-08-27 10:00:00",
     music_type: str | None = None,
+    manual_total_episode: int | None = 0,
 ) -> SubscribeModel:
     """构造隔离用例使用的订阅行。"""
     return SubscribeModel(
@@ -108,6 +107,7 @@ def _subscribe(
         username=username,
         date=date,
         music_type=music_type,
+        manual_total_episode=manual_total_episode,
     )
 
 
@@ -218,13 +218,15 @@ def _assert_projected_page(page: QueryPage, dto_type: type[Any], model_type: typ
 def test_sdk_projects_subscription_and_three_history_domains_to_dtos(db, query_sdk):
     """订阅、订阅完成历史、下载历史、整理历史均只返回 Pydantic 投影。"""
     sdk, _executor = query_sdk
-    subscribe = db.add(_subscribe("订阅 DTO", media_id="dto-sub"))
+    subscribe = db.add(
-    subscribe_history = db.add(
+        _subscribe(
-        _subscribe_history("订阅历史 DTO", media_id="dto-sub-history")
+            "订阅 DTO",
+            media_id="dto-sub",
+            manual_total_episode=1,
         )
-    download_history = db.add(
-        _download_history("下载历史 DTO", media_id="dto-download", path="/dto/download")
     )
+    subscribe_history = db.add(_subscribe_history("订阅历史 DTO", media_id="dto-sub-history"))
+    download_history = db.add(_download_history("下载历史 DTO", media_id="dto-download", path="/dto/download"))
     transfer_history = db.add(
         _transfer_history(
             "整理历史 DTO",
@@ -235,13 +237,12 @@ def test_sdk_projects_subscription_and_three_history_domains_to_dtos(db, query_s
     )
 
     _assert_projected_page(
-        sdk.list_subscriptions(
+        subscription_page := sdk.list_subscriptions(SubscriptionFilter(media_source=TMDB, media_id="dto-sub")),
-            SubscriptionFilter(media_source=TMDB, media_id="dto-sub")
+        SubscriptionSnapshot,
-        ),
-        SubscribeDTO,
         SubscribeModel,
         subscribe.id,
     )
+    assert subscription_page.items[0].manual_total_episode == 1
     _assert_projected_page(
         sdk.list_subscription_history(
             SubscriptionHistoryFilter(
@@ -249,23 +250,19 @@ def test_sdk_projects_subscription_and_three_history_domains_to_dtos(db, query_s
                 media_id="dto-sub-history",
             )
         ),
-        SubscribeHistoryDTO,
+        SubscriptionHistorySnapshot,
         SubscribeHistoryModel,
         subscribe_history.id,
     )
     _assert_projected_page(
-        sdk.list_download_history(
+        sdk.list_download_history(DownloadHistoryFilter(media_source=TMDB, media_id="dto-download")),
-            DownloadHistoryFilter(media_source=TMDB, media_id="dto-download")
+        DownloadHistorySnapshot,
-        ),
-        DownloadHistoryDTO,
         DownloadHistoryModel,
         download_history.id,
     )
     _assert_projected_page(
-        sdk.list_transfer_history(
+        sdk.list_transfer_history(TransferHistoryFilter(media_source=TMDB, media_id="dto-transfer")),
-            TransferHistoryFilter(media_source=TMDB, media_id="dto-transfer")
+        TransferHistorySnapshot,
-        ),
-        TransferHistoryDTO,
         TransferHistoryModel,
         transfer_history.id,
     )
@@ -422,11 +419,12 @@ def test_sdk_applies_combined_filters_in_each_query_domain(db, query_sdk):
             media_source=TMDB,
             media_id="combo-download",
             media_types=(MediaType.TV,),
-            title="Combo",
+            title="Combo Film",
+            text="match",
             year="2026",
             seasons="S02",
             episodes="E03",
-            path="match",
+            path="/combo/match.mkv",
             download_hash="combo-hash",
             username="alice",
             episode_group="eg-a",
@@ -475,7 +473,7 @@ def test_sdk_applies_combined_filters_in_each_query_domain(db, query_sdk):
             media_types=(MediaType.TV,),
             media_sources=(MediaSource.TMDB,),
             require_media_identity=True,
-            title="Transfer",
+            title="Transfer Combo",
             text="dest-match",
             year="2026",
             seasons="S02",
@@ -533,9 +531,7 @@ def test_sdk_pagination_reports_total_and_stable_date_id_order(db, query_sdk):
     assert page_one.page == 1
     assert page_one.count == 2
     assert page_one.has_next is True
-    assert [item.id for item in page_one.items] == [
+    assert [item.id for item in page_one.items] == [row.id for row in expected_desc[:2]]
-        row.id for row in expected_desc[:2]
-    ]
     assert page_two.total == 3
     assert page_two.has_next is False
     assert [item.id for item in page_two.items] == [expected_desc[2].id]
@@ -552,9 +548,98 @@ def test_sdk_pagination_reports_total_and_stable_date_id_order(db, query_sdk):
         ),
     )
     expected_asc = sorted(rows, key=lambda row: (row.date, row.id))
-    assert [item.id for item in asc_page.items] == [
+    assert [item.id for item in asc_page.items] == [row.id for row in expected_asc]
-        row.id for row in expected_asc
+
-    ]
+
+def test_structured_text_fields_are_exact_and_text_search_is_explicit(db, query_sdk):
+    """结构化字段保持精确匹配，只有 text 承担转义后的模糊搜索。"""
+    sdk, _executor = query_sdk
+    db.add(
+        _download_history(
+            "Exact Film Extended",
+            media_id="exact-download",
+            path="/exact/extended.mkv",
+        ),
+        _download_history(
+            "Exact Film",
+            media_id="exact-download",
+            path="/exact/base.mkv",
+        ),
+        _transfer_history(
+            "Exact Transfer Extended",
+            media_id="exact-transfer",
+            src="/exact/extended-src.mkv",
+            dest="/exact/extended-dest.mkv",
+        ),
+        _transfer_history(
+            "Exact Transfer",
+            media_id="exact-transfer",
+            src="/exact/base-src.mkv",
+            dest="/exact/base-dest.mkv",
+        ),
+    )
+
+    exact_downloads = sdk.list_download_history(
+        DownloadHistoryFilter(
+            media_source=TMDB,
+            media_id="exact-download",
+            title="Exact Film",
+        )
+    )
+    assert [item.path for item in exact_downloads.items] == ["/exact/base.mkv"]
+    fuzzy_downloads = sdk.list_download_history(
+        DownloadHistoryFilter(
+            media_source=TMDB,
+            media_id="exact-download",
+            text="extended",
+        )
+    )
+    assert [item.path for item in fuzzy_downloads.items] == ["/exact/extended.mkv"]
+
+    exact_transfers = sdk.list_transfer_history(
+        TransferHistoryFilter(
+            media_source=TMDB,
+            media_id="exact-transfer",
+            title="Exact Transfer",
+        )
+    )
+    assert [item.src for item in exact_transfers.items] == ["/exact/base-src.mkv"]
+    fuzzy_transfers = sdk.list_transfer_history(
+        TransferHistoryFilter(
+            media_source=TMDB,
+            media_id="exact-transfer",
+            text="extended-dest",
+        )
+    )
+    assert [item.src for item in fuzzy_transfers.items] == ["/exact/extended-src.mkv"]
+
+
+def test_snapshots_normalize_legacy_identity_and_transfer_status():
+    """旧半对身份和 NULL 整理状态不得使分页投影失败或产生假成功。"""
+    dirty_transfer = SimpleNamespace(
+        id=1,
+        media_source=TMDB,
+        media_id=" ",
+        status=None,
+    )
+
+    snapshot = TransferHistorySnapshot.model_validate(dirty_transfer)
+
+    assert snapshot.media_source is None
+    assert snapshot.media_id is None
+    assert snapshot.status is False
+
+
+def test_query_snapshots_are_owned_by_the_sdk_contract_module():
+    """公开查询返回值由独立快照定义，不复用宿主写入或 API 响应模型。"""
+    snapshots = (
+        SubscriptionSnapshot,
+        SubscriptionHistorySnapshot,
+        DownloadHistorySnapshot,
+        TransferHistorySnapshot,
+    )
+
+    assert all(snapshot.__module__ == "app.schemas.query" for snapshot in snapshots)
 
 
 @pytest.mark.parametrize(
@@ -590,9 +675,7 @@ def test_sdk_get_returns_none_for_missing_records(query_sdk):
 def test_sdk_sync_async_semantics_match_and_async_uses_executor(db, query_sdk):
     """四个查询门面的异步结果与同步一致，并交给 executor 线程。"""
     sdk, executor = query_sdk
-    subscribe = db.add(
+    subscribe = db.add(_subscribe("订阅同步异步", media_id="async-subscription"))
-        _subscribe("订阅同步异步", media_id="async-subscription")
-    )
     subscribe_history = db.add(
         _subscribe_history(
             "订阅历史同步异步",