diff --git a/app/api/endpoints/torrent.py b/app/api/endpoints/torrent.py
index 7f6a51664..6bd8bcc2c 100644
--- a/app/api/endpoints/torrent.py
+++ b/app/api/endpoints/torrent.py
@@ -8,7 +8,7 @@ from app.api.dependencies.auth import (
 )
 from app.api.response import ResponseAPIRouter
 from app.application.configuration import get_api_runtime_config_snapshot
-from app.application.torrent_cache import TorrentCacheRecognitionService
+from app.application.torrent.cache import TorrentCacheRecognitionService
 from app.chain.media import MediaChain
 from app.chain.torrents import TorrentsChain
 from app.foundation.crypto import HashUtils
diff --git a/app/application/torrent/__init__.py b/app/application/torrent/__init__.py
new file mode 100644
index 000000000..d71aeca50
--- /dev/null
+++ b/app/application/torrent/__init__.py
@@ -0,0 +1 @@
+"""种子下载与缓存应用能力包；宿主直接依赖职责子模块。"""
diff --git a/app/application/torrent_cache.py b/app/application/torrent/cache.py
similarity index 100%
rename from app/application/torrent_cache.py
rename to app/application/torrent/cache.py
index 614f2bc5c..357779fd7 100644
--- a/app/application/torrent_cache.py
+++ b/app/application/torrent/cache.py
@@ -3,10 +3,10 @@
 from typing import Any, Optional
 
 from app.domain.context import MediaInfo, MusicInfo
+from app.domain.media import is_music_media_source, normalize_music_type
 from app.domain.meta.metamusic import MetaMusic
 from app.domain.metainfo import MetaInfo
 from app.foundation.crypto import HashUtils
-from app.domain.media import is_music_media_source, normalize_music_type
 from app.schemas.types import MUSIC_ENTITY_RECORDING, MediaSource, MediaType, MusicTargetEntityType
 
 
diff --git a/app/application/torrent.py b/app/application/torrent/download.py
similarity index 100%
rename from app/application/torrent.py
rename to app/application/torrent/download.py
diff --git a/app/chain/_music.py b/app/chain/_music.py
index 740ed1c9e..bfbf878e6 100644
--- a/app/chain/_music.py
+++ b/app/chain/_music.py
@@ -10,7 +10,7 @@ from app.application.subscription.contract import (
     subscribe_media_key,
 )
 from app.application.subscription.mutation import SubscriptionActor
-from app.application.torrent import TorrentHelper
+from app.application.torrent.download import TorrentHelper
 from app.chain._contracts import MusicSubscribeMixinHost
 from app.chain.download import DownloadChain
 from app.chain.media import MediaChain
diff --git a/app/chain/download/batch.py b/app/chain/download/batch.py
index f8ae8358d..292d6b886 100644
--- a/app/chain/download/batch.py
+++ b/app/chain/download/batch.py
@@ -4,7 +4,7 @@ import copy
 from typing import Callable, Dict, List, Optional, Set, Tuple, cast
 
 from app.application.download import selection as _selection
-from app.application.torrent import TorrentHelper
+from app.application.torrent.download import TorrentHelper
 from app.chain.download.contract import _DownloadOwnerBase
 from app.domain import episode as episode_rules
 from app.domain.context import (
diff --git a/app/chain/download/selection.py b/app/chain/download/selection.py
index 061cf8e64..1db401615 100644
--- a/app/chain/download/selection.py
+++ b/app/chain/download/selection.py
@@ -7,7 +7,7 @@ from app.application.configuration import get_chain_runtime_config_snapshot
 from app.application.download.failures import (
     DownloadFailureSnapshot,
 )
-from app.application.torrent import TorrentHelper
+from app.application.torrent.download import TorrentHelper
 from app.chain.download.contract import _DownloadOwnerBase
 from app.domain.context import (
     Context,
diff --git a/app/chain/download/submission.py b/app/chain/download/submission.py
index ab3a95a6d..b35297856 100644
--- a/app/chain/download/submission.py
+++ b/app/chain/download/submission.py
@@ -9,7 +9,7 @@ from urllib.parse import urlencode, urljoin, urlparse
 
 from app.application.configuration import get_chain_runtime_config_snapshot
 from app.application.directory import validate_download_save_path
-from app.application.torrent import TorrentHelper
+from app.application.torrent.download import TorrentHelper
 from app.chain.download.contract import _DownloadOwnerBase
 from app.chain.download.ports import (
     _close_download_response,
diff --git a/app/chain/download/subtitle.py b/app/chain/download/subtitle.py
index 24ae3add1..426a54387 100644
--- a/app/chain/download/subtitle.py
+++ b/app/chain/download/subtitle.py
@@ -8,7 +8,7 @@ from typing import Any, List, Optional, Tuple, Union, cast
 
 from app.application.configuration import get_chain_runtime_config_snapshot
 from app.application.directory import DirectoryHelper, validate_download_save_path
-from app.application.torrent import TorrentHelper
+from app.application.torrent.download import TorrentHelper
 from app.chain.download.contract import _DownloadOwnerBase
 from app.chain.download.ports import (
     DownloadArchivePort,
diff --git a/app/chain/interaction.py b/app/chain/interaction.py
index 9aa061e15..f62691630 100644
--- a/app/chain/interaction.py
+++ b/app/chain/interaction.py
@@ -7,7 +7,7 @@ from app.application.messaging.media import (
     PendingMediaInteraction,
     media_interaction_manager,
 )
-from app.application.torrent import TorrentHelper
+from app.application.torrent.download import TorrentHelper
 from app.chain.base import ChainBase
 from app.chain.download import DownloadChain
 from app.chain.media import MediaChain
diff --git a/app/chain/search/music.py b/app/chain/search/music.py
index f7e4793b9..86872a496 100644
--- a/app/chain/search/music.py
+++ b/app/chain/search/music.py
@@ -10,7 +10,7 @@ from unicodedata import normalize
 from app.application.configuration import (
     get_configured_system_config,
 )
-from app.application.torrent import TorrentHelper
+from app.application.torrent.download import TorrentHelper
 from app.chain.search.contract import _SearchOwnerBase as _SearchOwnerBase
 from app.domain.context import Context, MusicInfo, TorrentInfo
 from app.domain.meta.metamusic import MetaMusic
diff --git a/app/chain/search/result.py b/app/chain/search/result.py
index 79132ef96..f6f6e415e 100644
--- a/app/chain/search/result.py
+++ b/app/chain/search/result.py
@@ -4,7 +4,7 @@ import copy
 from typing import Callable, Dict, List, Optional, Tuple, cast
 
 from app.application.configuration import get_configured_system_config
-from app.application.torrent import TorrentHelper
+from app.application.torrent.download import TorrentHelper
 from app.chain.media import MediaChain
 from app.chain.search.contract import _SearchOwnerBase
 from app.domain.context import Context, MediaInfo, TorrentInfo
diff --git a/app/chain/search/subtitle.py b/app/chain/search/subtitle.py
index 7663a704f..b51e5111c 100644
--- a/app/chain/search/subtitle.py
+++ b/app/chain/search/subtitle.py
@@ -4,7 +4,7 @@ import asyncio
 import random
 from typing import Any, AsyncIterator, Dict, List, Optional, cast
 
-from app.application.torrent import TorrentHelper
+from app.application.torrent.download import TorrentHelper
 from app.chain.media import MediaChain
 from app.chain.search.contract import _SearchOwnerBase as _SearchOwnerBase
 from app.domain.context import MediaInfo, SubtitleInfo, TorrentInfo
diff --git a/app/chain/subscribe/match.py b/app/chain/subscribe/match.py
index 162b0433f..0fedc5888 100644
--- a/app/chain/subscribe/match.py
+++ b/app/chain/subscribe/match.py
@@ -6,7 +6,7 @@ from typing import Callable, Dict, List, Optional
 
 from app.application.configuration import get_configured_system_config
 from app.application.subscription.contract import build_subscribe_meta, subscribe_media_key
-from app.application.torrent import TorrentHelper
+from app.application.torrent.download import TorrentHelper
 from app.chain.media import MediaChain
 from app.chain.subscribe.contract import _SubscribeOwnerBase
 from app.chain.subscribe.identity import subscribe_recognize_kwargs
diff --git a/app/chain/torrents.py b/app/chain/torrents.py
index 380682b29..7cda327e3 100644
--- a/app/chain/torrents.py
+++ b/app/chain/torrents.py
@@ -6,7 +6,7 @@ from typing import Callable, Dict, List, Optional, Union
 from app.application.configuration import get_configured_system_config
 from app.application.rss import RssHelper
 from app.application.site.sites import SitesHelper  # pylint: disable=import-error,no-name-in-module
-from app.application.torrent import TorrentHelper
+from app.application.torrent.download import TorrentHelper
 from app.chain.base import ChainBase
 from app.chain.media import MediaChain
 from app.domain import site as site_rules
diff --git a/app/runtime/compat/manifest.py b/app/runtime/compat/manifest.py
index 0302bc740..46070d847 100644
--- a/app/runtime/compat/manifest.py
+++ b/app/runtime/compat/manifest.py
@@ -619,7 +619,8 @@ MODULE_ALIASES: Dict[str, ModuleAlias] = {
         introduced="v3.0.0", owner="runtime",
     ),
     "app.helper.torrent": ModuleAlias(
-        target="app.application.torrent", replacement="app.application.torrent",
+        target="app.application.torrent.download",
+        replacement="app.application.torrent.download",
         introduced="v3.0.0", owner="application",
     ),
     "app.helper.transferhistory": ModuleAlias(
diff --git a/app/startup/initializers/site.py b/app/startup/initializers/site.py
index a225fe454..2cde74aef 100644
--- a/app/startup/initializers/site.py
+++ b/app/startup/initializers/site.py
@@ -25,7 +25,7 @@ from app.application.security.cookie import (
     configure_cookie_ports,
     reset_cookie_ports,
 )
-from app.application.torrent import (
+from app.application.torrent.download import (
     TorrentHttpPort,
     TorrentResponsePort,
     configure_torrent_port,
diff --git a/app/workflow/actions/filter_torrents.py b/app/workflow/actions/filter_torrents.py
index 245d81e8a..a96f0617b 100644
--- a/app/workflow/actions/filter_torrents.py
+++ b/app/workflow/actions/filter_torrents.py
@@ -2,7 +2,7 @@ from typing import List, Optional
 
 from pydantic import Field
 
-from app.application.torrent import TorrentHelper
+from app.application.torrent.download import TorrentHelper
 from app.runtime.log import logger
 from app.runtime.stop import runtime_stop_state
 from app.schemas.workflow import ActionContext, ActionParams
diff --git a/docs/rules/05-architecture.md b/docs/rules/05-architecture.md
index cec2d3a9e..6f9c10dc4 100644
--- a/docs/rules/05-architecture.md
+++ b/docs/rules/05-architecture.md
@@ -361,7 +361,7 @@ mentions media, site or torrent:
 | Media | `context.py` owns canonical `Context`, `MediaInfo` and `TorrentInfo` construction; `projection/` owns the pure, input-immutable TMDB/Douban/Bangumi/AniList field mappings and TMDB image-builder port; `media.py` owns source selection policy; identity representation/normalization stays in `schemas/media.py`; `title.py` owns title-candidate and search-keyword rules; `episode.py` owns episode-range display; `scraper.py` owns Kodi-style NFO reading and metadata document generation |
 | Recognition | `metainfo.py`, `meta/` and `tokens.py` parse names, paths, release groups, streaming platforms, anime, video and music metadata |
 | Site | `site.py` owns site-domain exceptions and interprets HTML into business states such as logged-in and checked-in; configured catalog/auth/index resources stay in `app/application/site/`, generic URL/DOM parsing stays in foundation and network access stays in adapters |
-| Torrent | `torrent.py` owns magnet-link semantics; configured download/cache/file behavior stays in `app/application/torrent.py` |
+| Torrent | `domain/torrent.py` owns magnet-link semantics; configured download/file behavior stays in `application/torrent/download.py`, while cache recognition stays in `application/torrent/cache.py` |
 
 `app/domain` may depend only on schemas and foundation. It must not read global
 settings, access DB/network/filesystem adapters, import Rust, discover services
diff --git a/tests/fixtures/architecture/dependency-baseline.json b/tests/fixtures/architecture/dependency-baseline.json
index 37c95f3bc..551c5880a 100644
--- a/tests/fixtures/architecture/dependency-baseline.json
+++ b/tests/fixtures/architecture/dependency-baseline.json
@@ -1089,8 +1089,8 @@
       "runtime_only": true
     }
   },
-  "edge_count": 8301,
-  "edge_sha256": "a1148b9576004423eb291429dc3e9a0e99282f14fe9d3d416539584a28aec8d0",
+  "edge_count": 8330,
+  "edge_sha256": "1a084d7f7953fed5f141f7bc6082442fffd69c0b71ad65a65b64e0454602c617",
   "edges": [
     "app -> app.foundation",
     "app -> app.foundation.environment",
@@ -3536,7 +3536,8 @@
     "app.api.endpoints.torrent -> app.api.response",
     "app.api.endpoints.torrent -> app.application",
     "app.api.endpoints.torrent -> app.application.configuration",
-    "app.api.endpoints.torrent -> app.application.torrent_cache",
+    "app.api.endpoints.torrent -> app.application.torrent",
+    "app.api.endpoints.torrent -> app.application.torrent.cache",
     "app.api.endpoints.torrent -> app.chain",
     "app.api.endpoints.torrent -> app.chain.media",
     "app.api.endpoints.torrent -> app.chain.torrents",
@@ -4222,36 +4223,36 @@
     "app.application.subscription.write -> app.schemas.common",
     "app.application.subscription.write -> app.schemas.media",
     "app.application.subscription.write -> app.schemas.types",
-    "app.application.torrent -> app.application",
-    "app.application.torrent -> app.application.configuration",
-    "app.application.torrent -> app.application.site",
-    "app.application.torrent -> app.application.site.query",
-    "app.application.torrent -> app.domain",
-    "app.application.torrent -> app.domain.context",
-    "app.application.torrent -> app.domain.meta",
-    "app.application.torrent -> app.domain.meta.metabase",
-    "app.application.torrent -> app.domain.meta.metamusic",
-    "app.application.torrent -> app.domain.metainfo",
-    "app.application.torrent -> app.domain.torrent",
-    "app.application.torrent -> app.foundation",
-    "app.application.torrent -> app.foundation.crypto",
-    "app.application.torrent -> app.foundation.text",
-    "app.application.torrent -> app.runtime",
-    "app.application.torrent -> app.runtime.cache",
-    "app.application.torrent -> app.runtime.log",
-    "app.application.torrent -> app.schemas",
-    "app.application.torrent -> app.schemas.media",
-    "app.application.torrent -> app.schemas.types",
-    "app.application.torrent_cache -> app.domain",
-    "app.application.torrent_cache -> app.domain.context",
-    "app.application.torrent_cache -> app.domain.media",
-    "app.application.torrent_cache -> app.domain.meta",
-    "app.application.torrent_cache -> app.domain.meta.metamusic",
-    "app.application.torrent_cache -> app.domain.metainfo",
-    "app.application.torrent_cache -> app.foundation",
-    "app.application.torrent_cache -> app.foundation.crypto",
-    "app.application.torrent_cache -> app.schemas",
-    "app.application.torrent_cache -> app.schemas.types",
+    "app.application.torrent.cache -> app.domain",
+    "app.application.torrent.cache -> app.domain.context",
+    "app.application.torrent.cache -> app.domain.media",
+    "app.application.torrent.cache -> app.domain.meta",
+    "app.application.torrent.cache -> app.domain.meta.metamusic",
+    "app.application.torrent.cache -> app.domain.metainfo",
+    "app.application.torrent.cache -> app.foundation",
+    "app.application.torrent.cache -> app.foundation.crypto",
+    "app.application.torrent.cache -> app.schemas",
+    "app.application.torrent.cache -> app.schemas.types",
+    "app.application.torrent.download -> app.application",
+    "app.application.torrent.download -> app.application.configuration",
+    "app.application.torrent.download -> app.application.site",
+    "app.application.torrent.download -> app.application.site.query",
+    "app.application.torrent.download -> app.domain",
+    "app.application.torrent.download -> app.domain.context",
+    "app.application.torrent.download -> app.domain.meta",
+    "app.application.torrent.download -> app.domain.meta.metabase",
+    "app.application.torrent.download -> app.domain.meta.metamusic",
+    "app.application.torrent.download -> app.domain.metainfo",
+    "app.application.torrent.download -> app.domain.torrent",
+    "app.application.torrent.download -> app.foundation",
+    "app.application.torrent.download -> app.foundation.crypto",
+    "app.application.torrent.download -> app.foundation.text",
+    "app.application.torrent.download -> app.runtime",
+    "app.application.torrent.download -> app.runtime.cache",
+    "app.application.torrent.download -> app.runtime.log",
+    "app.application.torrent.download -> app.schemas",
+    "app.application.torrent.download -> app.schemas.media",
+    "app.application.torrent.download -> app.schemas.types",
     "app.application.transfer.workflow -> app.application",
     "app.application.transfer.workflow -> app.application.history",
     "app.application.transfer.workflow -> app.application.transfer",
@@ -4310,6 +4311,7 @@
     "app.chain._music -> app.application.subscription.contract",
     "app.chain._music -> app.application.subscription.mutation",
     "app.chain._music -> app.application.torrent",
+    "app.chain._music -> app.application.torrent.download",
     "app.chain._music -> app.chain",
     "app.chain._music -> app.chain._contracts",
     "app.chain._music -> app.chain.download",
@@ -4399,6 +4401,7 @@
     "app.chain.download.batch -> app.application.download",
     "app.chain.download.batch -> app.application.download.selection",
     "app.chain.download.batch -> app.application.torrent",
+    "app.chain.download.batch -> app.application.torrent.download",
     "app.chain.download.batch -> app.chain",
     "app.chain.download.batch -> app.chain.download",
     "app.chain.download.batch -> app.chain.download.contract",
@@ -4490,6 +4493,7 @@
     "app.chain.download.selection -> app.application.download",
     "app.chain.download.selection -> app.application.download.failures",
     "app.chain.download.selection -> app.application.torrent",
+    "app.chain.download.selection -> app.application.torrent.download",
     "app.chain.download.selection -> app.chain",
     "app.chain.download.selection -> app.chain.download",
     "app.chain.download.selection -> app.chain.download.contract",
@@ -4510,6 +4514,7 @@
     "app.chain.download.submission -> app.application.configuration",
     "app.chain.download.submission -> app.application.directory",
     "app.chain.download.submission -> app.application.torrent",
+    "app.chain.download.submission -> app.application.torrent.download",
     "app.chain.download.submission -> app.chain",
     "app.chain.download.submission -> app.chain.download",
     "app.chain.download.submission -> app.chain.download.contract",
@@ -4531,6 +4536,7 @@
     "app.chain.download.subtitle -> app.application.configuration",
     "app.chain.download.subtitle -> app.application.directory",
     "app.chain.download.subtitle -> app.application.torrent",
+    "app.chain.download.subtitle -> app.application.torrent.download",
     "app.chain.download.subtitle -> app.chain",
     "app.chain.download.subtitle -> app.chain.download",
     "app.chain.download.subtitle -> app.chain.download.contract",
@@ -4566,6 +4572,7 @@
     "app.chain.interaction -> app.application.messaging",
     "app.chain.interaction -> app.application.messaging.media",
     "app.chain.interaction -> app.application.torrent",
+    "app.chain.interaction -> app.application.torrent.download",
     "app.chain.interaction -> app.chain",
     "app.chain.interaction -> app.chain.base",
     "app.chain.interaction -> app.chain.download",
@@ -4905,6 +4912,7 @@
     "app.chain.search.music -> app.application",
     "app.chain.search.music -> app.application.configuration",
     "app.chain.search.music -> app.application.torrent",
+    "app.chain.search.music -> app.application.torrent.download",
     "app.chain.search.music -> app.chain",
     "app.chain.search.music -> app.chain.search",
     "app.chain.search.music -> app.chain.search.contract",
@@ -4968,6 +4976,7 @@
     "app.chain.search.result -> app.application",
     "app.chain.search.result -> app.application.configuration",
     "app.chain.search.result -> app.application.torrent",
+    "app.chain.search.result -> app.application.torrent.download",
     "app.chain.search.result -> app.chain",
     "app.chain.search.result -> app.chain.media",
     "app.chain.search.result -> app.chain.search",
@@ -4995,6 +5004,7 @@
     "app.chain.search.site -> app.schemas.types",
     "app.chain.search.subtitle -> app.application",
     "app.chain.search.subtitle -> app.application.torrent",
+    "app.chain.search.subtitle -> app.application.torrent.download",
     "app.chain.search.subtitle -> app.chain",
     "app.chain.search.subtitle -> app.chain.media",
     "app.chain.search.subtitle -> app.chain.search",
@@ -5157,6 +5167,7 @@
     "app.chain.subscribe.match -> app.application.subscription",
     "app.chain.subscribe.match -> app.application.subscription.contract",
     "app.chain.subscribe.match -> app.application.torrent",
+    "app.chain.subscribe.match -> app.application.torrent.download",
     "app.chain.subscribe.match -> app.chain",
     "app.chain.subscribe.match -> app.chain.media",
     "app.chain.subscribe.match -> app.chain.subscribe",
@@ -5317,6 +5328,7 @@
     "app.chain.torrents -> app.application.rss",
     "app.chain.torrents -> app.application.site",
     "app.chain.torrents -> app.application.torrent",
+    "app.chain.torrents -> app.application.torrent.download",
     "app.chain.torrents -> app.chain",
     "app.chain.torrents -> app.chain.base",
     "app.chain.torrents -> app.chain.media",
@@ -6303,10 +6315,6 @@
     "app.modules -> app.schemas.message",
     "app.modules -> app.schemas.system",
     "app.modules -> app.schemas.types",
-    "app.modules._base -> app.modules",
-    "app.modules._base -> app.modules._base.downloader",
-    "app.modules._base -> app.modules._base.mediaserver",
-    "app.modules._base -> app.modules._base.notification",
     "app.modules._base.downloader -> app.domain",
     "app.modules._base.downloader -> app.domain.torrent",
     "app.modules._base.downloader -> app.modules",
@@ -6413,6 +6421,7 @@
     "app.modules.dingtalk -> app.domain.context",
     "app.modules.dingtalk -> app.modules",
     "app.modules.dingtalk -> app.modules._base",
+    "app.modules.dingtalk -> app.modules._base.notification",
     "app.modules.dingtalk -> app.modules.dingtalk.dingtalk",
     "app.modules.dingtalk -> app.schemas",
     "app.modules.dingtalk -> app.schemas.message",
@@ -6432,6 +6441,7 @@
     "app.modules.discord -> app.domain.context",
     "app.modules.discord -> app.modules",
     "app.modules.discord -> app.modules._base",
+    "app.modules.discord -> app.modules._base.notification",
     "app.modules.discord -> app.modules.discord.discord",
     "app.modules.discord -> app.runtime",
     "app.modules.discord -> app.runtime.log",
@@ -6496,6 +6506,7 @@
     "app.modules.douban.scraper -> app.schemas.types",
     "app.modules.emby -> app.modules",
     "app.modules.emby -> app.modules._base",
+    "app.modules.emby -> app.modules._base.mediaserver",
     "app.modules.emby -> app.modules.emby.emby",
     "app.modules.emby -> app.runtime",
     "app.modules.emby -> app.runtime.log",
@@ -6537,6 +6548,7 @@
     "app.modules.feishu -> app.domain.context",
     "app.modules.feishu -> app.modules",
     "app.modules.feishu -> app.modules._base",
+    "app.modules.feishu -> app.modules._base.notification",
     "app.modules.feishu -> app.modules.feishu.feishu",
     "app.modules.feishu -> app.runtime",
     "app.modules.feishu -> app.runtime.log",
@@ -7100,6 +7112,7 @@
     "app.modules.indexer.spider.yema -> app.schemas.types",
     "app.modules.jellyfin -> app.modules",
     "app.modules.jellyfin -> app.modules._base",
+    "app.modules.jellyfin -> app.modules._base.mediaserver",
     "app.modules.jellyfin -> app.modules.jellyfin.jellyfin",
     "app.modules.jellyfin -> app.runtime",
     "app.modules.jellyfin -> app.runtime.log",
@@ -7222,6 +7235,7 @@
     "app.modules.plex -> app.domain.context",
     "app.modules.plex -> app.modules",
     "app.modules.plex -> app.modules._base",
+    "app.modules.plex -> app.modules._base.mediaserver",
     "app.modules.plex -> app.modules.plex.plex",
     "app.modules.plex -> app.runtime",
     "app.modules.plex -> app.runtime.events",
@@ -7260,6 +7274,7 @@
     "app.modules.qbittorrent -> app.foundation.text",
     "app.modules.qbittorrent -> app.modules",
     "app.modules.qbittorrent -> app.modules._base",
+    "app.modules.qbittorrent -> app.modules._base.downloader",
     "app.modules.qbittorrent -> app.modules.qbittorrent.qbittorrent",
     "app.modules.qbittorrent -> app.runtime",
     "app.modules.qbittorrent -> app.runtime.log",
@@ -7291,6 +7306,7 @@
     "app.modules.qqbot.module -> app.domain.context",
     "app.modules.qqbot.module -> app.modules",
     "app.modules.qqbot.module -> app.modules._base",
+    "app.modules.qqbot.module -> app.modules._base.notification",
     "app.modules.qqbot.module -> app.modules.qqbot",
     "app.modules.qqbot.module -> app.modules.qqbot.qqbot",
     "app.modules.qqbot.module -> app.runtime",
@@ -7334,6 +7350,7 @@
     "app.modules.rtorrent -> app.foundation.text",
     "app.modules.rtorrent -> app.modules",
     "app.modules.rtorrent -> app.modules._base",
+    "app.modules.rtorrent -> app.modules._base.downloader",
     "app.modules.rtorrent -> app.modules.rtorrent.rtorrent",
     "app.modules.rtorrent -> app.runtime",
     "app.modules.rtorrent -> app.runtime.log",
@@ -7351,6 +7368,7 @@
     "app.modules.slack -> app.domain.context",
     "app.modules.slack -> app.modules",
     "app.modules.slack -> app.modules._base",
+    "app.modules.slack -> app.modules._base.notification",
     "app.modules.slack -> app.modules.slack.slack",
     "app.modules.slack -> app.runtime",
     "app.modules.slack -> app.runtime.log",
@@ -7397,6 +7415,7 @@
     "app.modules.synologychat -> app.domain.context",
     "app.modules.synologychat -> app.modules",
     "app.modules.synologychat -> app.modules._base",
+    "app.modules.synologychat -> app.modules._base.notification",
     "app.modules.synologychat -> app.modules.synologychat.synologychat",
     "app.modules.synologychat -> app.runtime",
     "app.modules.synologychat -> app.runtime.log",
@@ -7422,6 +7441,7 @@
     "app.modules.telegram.module -> app.domain.context",
     "app.modules.telegram.module -> app.modules",
     "app.modules.telegram.module -> app.modules._base",
+    "app.modules.telegram.module -> app.modules._base.notification",
     "app.modules.telegram.module -> app.modules.telegram",
     "app.modules.telegram.module -> app.modules.telegram.telegram",
     "app.modules.telegram.module -> app.runtime",
@@ -7703,6 +7723,7 @@
     "app.modules.transmission -> app.foundation.temporal",
     "app.modules.transmission -> app.modules",
     "app.modules.transmission -> app.modules._base",
+    "app.modules.transmission -> app.modules._base.downloader",
     "app.modules.transmission -> app.modules.transmission.transmission",
     "app.modules.transmission -> app.runtime",
     "app.modules.transmission -> app.runtime.log",
@@ -7723,6 +7744,7 @@
     "app.modules.trimemedia.api -> app.runtime.settings",
     "app.modules.trimemedia.module -> app.modules",
     "app.modules.trimemedia.module -> app.modules._base",
+    "app.modules.trimemedia.module -> app.modules._base.mediaserver",
     "app.modules.trimemedia.module -> app.modules.trimemedia",
     "app.modules.trimemedia.module -> app.modules.trimemedia.trimemedia",
     "app.modules.trimemedia.module -> app.runtime",
@@ -7758,6 +7780,7 @@
     "app.modules.ugreen.api -> app.runtime.log",
     "app.modules.ugreen.module -> app.modules",
     "app.modules.ugreen.module -> app.modules._base",
+    "app.modules.ugreen.module -> app.modules._base.mediaserver",
     "app.modules.ugreen.module -> app.modules.ugreen",
     "app.modules.ugreen.module -> app.modules.ugreen.ugreen",
     "app.modules.ugreen.module -> app.runtime",
@@ -7787,6 +7810,7 @@
     "app.modules.vocechat -> app.domain.context",
     "app.modules.vocechat -> app.modules",
     "app.modules.vocechat -> app.modules._base",
+    "app.modules.vocechat -> app.modules._base.notification",
     "app.modules.vocechat -> app.modules.vocechat.vocechat",
     "app.modules.vocechat -> app.runtime",
     "app.modules.vocechat -> app.runtime.log",
@@ -7825,6 +7849,7 @@
     "app.modules.wechat -> app.foundation.dom",
     "app.modules.wechat -> app.modules",
     "app.modules.wechat -> app.modules._base",
+    "app.modules.wechat -> app.modules._base.notification",
     "app.modules.wechat -> app.modules.wechat.wechat",
     "app.modules.wechat -> app.modules.wechat.wechatbot",
     "app.modules.wechat -> app.runtime",
@@ -7871,6 +7896,7 @@
     "app.modules.wechatclawbot -> app.domain.context",
     "app.modules.wechatclawbot -> app.modules",
     "app.modules.wechatclawbot -> app.modules._base",
+    "app.modules.wechatclawbot -> app.modules._base.notification",
     "app.modules.wechatclawbot -> app.modules.wechatclawbot.wechatclawbot",
     "app.modules.wechatclawbot -> app.runtime",
     "app.modules.wechatclawbot -> app.runtime.cache",
@@ -7895,6 +7921,7 @@
     "app.modules.wechatclawbot.wechatclawbot -> app.runtime.settings",
     "app.modules.zspace -> app.modules",
     "app.modules.zspace -> app.modules._base",
+    "app.modules.zspace -> app.modules._base.mediaserver",
     "app.modules.zspace -> app.modules.zspace.zspace",
     "app.modules.zspace -> app.runtime",
     "app.modules.zspace -> app.runtime.log",
@@ -9149,6 +9176,7 @@
     "app.startup.initializers.site -> app.application.security",
     "app.startup.initializers.site -> app.application.security.cookie",
     "app.startup.initializers.site -> app.application.torrent",
+    "app.startup.initializers.site -> app.application.torrent.download",
     "app.startup.initializers.site -> app.chain",
     "app.startup.initializers.site -> app.chain.site",
     "app.startup.initializers.transfer -> app.chain",
@@ -9326,6 +9354,7 @@
     "app.workflow.actions.filter_medias -> app.workflow.actions",
     "app.workflow.actions.filter_torrents -> app.application",
     "app.workflow.actions.filter_torrents -> app.application.torrent",
+    "app.workflow.actions.filter_torrents -> app.application.torrent.download",
     "app.workflow.actions.filter_torrents -> app.runtime",
     "app.workflow.actions.filter_torrents -> app.runtime.log",
     "app.workflow.actions.filter_torrents -> app.runtime.stop",
@@ -9394,7 +9423,7 @@
     "app.workflow.actions.transfer_file -> app.workflow",
     "app.workflow.actions.transfer_file -> app.workflow.actions"
   ],
-  "module_count": 972,
+  "module_count": 973,
   "modules": [
     "app",
     "app.adapters",
@@ -9754,7 +9783,8 @@
     "app.application.subscription.search",
     "app.application.subscription.write",
     "app.application.torrent",
-    "app.application.torrent_cache",
+    "app.application.torrent.cache",
+    "app.application.torrent.download",
     "app.application.transfer",
     "app.application.transfer.execution",
     "app.application.transfer.workflow",
diff --git a/tests/fixtures/architecture/filename-policy.json b/tests/fixtures/architecture/filename-policy.json
index 19204db2e..0b11474b3 100644
--- a/tests/fixtures/architecture/filename-policy.json
+++ b/tests/fixtures/architecture/filename-policy.json
@@ -104,7 +104,6 @@
     "app/agent/tools/impl/write_file.py",
     "app/api/openai_utils.py",
     "app/api/router_specs.py",
-    "app/application/torrent_cache.py",
     "app/chain/_contracts.py",
     "app/chain/_interaction.py",
     "app/chain/_messaging.py",
diff --git a/tests/fixtures/architecture/mypy-baseline.json b/tests/fixtures/architecture/mypy-baseline.json
index 8a73561ad..c815cf2f5 100644
--- a/tests/fixtures/architecture/mypy-baseline.json
+++ b/tests/fixtures/architecture/mypy-baseline.json
@@ -1225,7 +1225,7 @@
   "app/application/subscription/write.py": {
     "arg-type": 2
   },
-  "app/application/torrent.py": {
+  "app/application/torrent/download.py": {
     "arg-type": 2,
     "assignment": 3,
     "attr-defined": 1,
@@ -1237,7 +1237,7 @@
     "union-attr": 4,
     "var-annotated": 1
   },
-  "app/application/torrent_cache.py": {
+  "app/application/torrent/cache.py": {
     "type-arg": 1
   },
   "app/chain/_interaction.py": {
diff --git a/tests/fixtures/architecture/ruff-baseline.json b/tests/fixtures/architecture/ruff-baseline.json
index f5bb2b84b..c48923e0a 100644
--- a/tests/fixtures/architecture/ruff-baseline.json
+++ b/tests/fixtures/architecture/ruff-baseline.json
@@ -216,9 +216,6 @@
   "app/application/storage.py": {
     "I001": 1
   },
-  "app/application/torrent_cache.py": {
-    "I001": 1
-  },
   "app/db/__init__.py": {
     "I001": 1
   },
diff --git a/tests/fixtures/architecture/runtime-contract-baseline.json b/tests/fixtures/architecture/runtime-contract-baseline.json
index c204b9f7a..9897de395 100644
--- a/tests/fixtures/architecture/runtime-contract-baseline.json
+++ b/tests/fixtures/architecture/runtime-contract-baseline.json
@@ -565,8 +565,8 @@
         "introduced": "v3.0.0",
         "is_package": false,
         "owner": "application",
-        "replacement": "app.application.torrent",
-        "target": "app.application.torrent"
+        "replacement": "app.application.torrent.download",
+        "target": "app.application.torrent.download"
       },
       "app.helper.transferhistory": {
         "introduced": "v3.0.0",
diff --git a/tests/test_architecture_adapter_imports.py b/tests/test_architecture_adapter_imports.py
index b605aa7cb..245cfea0c 100644
--- a/tests/test_architecture_adapter_imports.py
+++ b/tests/test_architecture_adapter_imports.py
@@ -35,7 +35,7 @@ FROZEN_DIRECT_ADAPTER_IMPORTS = {
     ("app.application.security.cookie", "app.adapters.external.ocr"): "S2-L6",
     ("app.application.security.cookie", "app.adapters.network.browser"): "S2-L6",
     ("app.application.security.cookie", "app.adapters.network.http"): "S2-L6",
-    ("app.application.torrent", "app.adapters.network.http"): "S2-L6",
+    ("app.application.torrent.download", "app.adapters.network.http"): "S2-L6",
     ("app.application.transfer.workflow", "app.adapters.system.host"): "S2-L6",
 }
 
diff --git a/tests/test_architecture_dependencies.py b/tests/test_architecture_dependencies.py
index bc37e1e33..d8af7768f 100644
--- a/tests/test_architecture_dependencies.py
+++ b/tests/test_architecture_dependencies.py
@@ -84,6 +84,8 @@ RETIRED_CANONICAL_FILES = (
     "app/adapters/network/sites.pyi",
     "app/application/plugins.py",
     "app/application/subscribe.py",
+    "app/application/torrent.py",
+    "app/application/torrent_cache.py",
     "app/application/chain/durable_events.py",
     "app/application/transfer.py",
     "app/application/transfer_execution.py",
@@ -363,6 +365,34 @@ def test_runtime_dependencies_use_same_named_single_word_package() -> None:
     assert violations == []
 
 
+def test_application_torrent_uses_same_named_single_word_package() -> None:
+    """种子应用能力必须归入同名包，包根不得重复导出内部实现。"""
+    package = APP_ROOT / "application" / "torrent"
+    assert {path.name for path in package.glob("*.py")} == {
+        "__init__.py",
+        "cache.py",
+        "download.py",
+    }
+    init_tree = ast.parse(
+        (package / "__init__.py").read_text(encoding="utf-8"),
+        filename=str(package / "__init__.py"),
+    )
+    assert ast.get_docstring(init_tree)
+    assert len(init_tree.body) == 1
+
+    root_imports: list[str] = []
+    for path in APP_ROOT.rglob("*.py"):
+        if path.is_relative_to(APP_ROOT / "plugins"):
+            continue
+        tree = ast.parse(path.read_text(encoding="utf-8-sig"), filename=str(path))
+        for node in ast.walk(tree):
+            if isinstance(node, ast.ImportFrom) and node.module == "app.application.torrent":
+                root_imports.append(
+                    f"{path.relative_to(PROJECT_ROOT).as_posix()}:{node.lineno}"
+                )
+    assert root_imports == []
+
+
 def test_host_module_package_roots_only_export_capability_entrypoints() -> None:
     """宿主模块包根只公开 capability entrypoint，内部 owner 必须直达子模块。"""
     base_path = APP_ROOT / "modules" / "_base" / "__init__.py"
diff --git a/tests/test_metainfo.py b/tests/test_metainfo.py
index b83a2dce8..edb34f736 100644
--- a/tests/test_metainfo.py
+++ b/tests/test_metainfo.py
@@ -16,7 +16,7 @@ from app.domain.meta.runtime import (
     get_media_extensions,
     get_metainfo_accelerator,
 )
-from app.application.torrent import TorrentHelper
+from app.application.torrent.download import TorrentHelper
 from app.schemas.types import MediaSource, MediaType
 from tests.cases.meta import meta_cases
 
diff --git a/tests/test_site_access_ports.py b/tests/test_site_access_ports.py
index 1b05ab272..ad69af1d9 100644
--- a/tests/test_site_access_ports.py
+++ b/tests/test_site_access_ports.py
@@ -5,12 +5,12 @@ from types import SimpleNamespace
 
 import pytest
 
+import app.application.torrent.download as torrent_module
 from app.application import rss as rss_module
-from app.application import torrent as torrent_module
 from app.application.rss import RssHelper, configure_rss_ports
 from app.application.security import cookie as cookie_module
 from app.application.security.cookie import CookieHelper, configure_cookie_ports
-from app.application.torrent import (
+from app.application.torrent.download import (
     TorrentHelper,
     configure_torrent_port,
 )
diff --git a/tests/test_site_chain_ports.py b/tests/test_site_chain_ports.py
index 97d2a2338..bff050830 100644
--- a/tests/test_site_chain_ports.py
+++ b/tests/test_site_chain_ports.py
@@ -9,9 +9,9 @@ from typing import Iterator, Optional
 
 import pytest
 
+import app.application.torrent.download as torrent_module
 from app.adapters.external import cookiecloud as cookiecloud_module
 from app.application import rss as rss_module
-from app.application import torrent as torrent_module
 from app.application.security import cookie as cookie_module
 from app.application.site.contract import SiteSnapshot
 from app.chain import site as site_module
diff --git a/tests/test_subscribe_chain.py b/tests/test_subscribe_chain.py
index 0f00368cb..f5aaf1f9f 100644
--- a/tests/test_subscribe_chain.py
+++ b/tests/test_subscribe_chain.py
@@ -400,7 +400,10 @@ def _load_subscribe_chain_class():
     )
     helper_mediaserver_module.MediaServerHelper = type("MediaServerHelper", (), {})
 
-    helper_torrent_module = ensure_module("app.application.torrent", types.ModuleType("app.application.torrent"))
+    helper_torrent_module = ensure_module(
+        "app.application.torrent.download",
+        types.ModuleType("app.application.torrent.download"),
+    )
     helper_torrent_module.TorrentHelper = type("TorrentHelper", (), {})
 
     db_model_module = ensure_module("app.db.models.subscribe", types.ModuleType("app.db.models.subscribe"))
@@ -490,8 +493,8 @@ def _load_subscribe_chain_class():
     import app.startup.initializers.chain as chain_initializer
     from app.application.messaging.subscribe import SubscribeInteractionHandler
     from app.application.subscription.contract import SubscriptionSnapshot, build_subscribe_meta
-    from app.chain.subscribe import SubscribeChain as ProductionSubscribeChain
     from app.chain.subscribe.context import _SubscribeCreateContext
+    from app.chain.subscribe.facade import SubscribeChain as ProductionSubscribeChain
 
     class SubscribeChain(ProductionSubscribeChain):
         """保留存量单元测试按调用时替换 repository 的隔离接缝。"""
diff --git a/tests/test_torrent_filter.py b/tests/test_torrent_filter.py
index d1fb9e7dc..cd20c14a1 100644
--- a/tests/test_torrent_filter.py
+++ b/tests/test_torrent_filter.py
@@ -3,7 +3,7 @@ from types import SimpleNamespace
 from unittest.mock import patch
 
 from app.domain.context import MediaInfo, TorrentInfo
-from app.application.torrent import TorrentHelper
+from app.application.torrent.download import TorrentHelper
 from app.modules.filter import FilterModule
 from app.application.rules import BUILTIN_RULE_SET
 from app.adapters.system import rust as rust_accel