refactor(application): filter_rules.py 更名 rules.py 并合并 RuleHelper

规则域收敛为单一事实来源 app/application/rules.py：
- filter_rules.py 更名为 rules.py（内置规则集 + RuleParser）
- filter.py 仅含 66 行 RuleHelper（用户规则组配置访问），并入 rules.py
- 同步更新 5 处引用方导入、nettest stub 目标与架构文档
- 兼容映射 app.helper.rule 指向新路径，legacy 导入仍可用

app/agent/tools/impl/_filter_rule_utils.py

@@ -7,9 +7,9 @@ from typing import Any, Dict, Iterable, Optional
 from app.runtime.events import eventmanager
 from app.db.oper.subscribe import SubscribeOper
 from app.db.oper.systemconfig import SystemConfigOper
-from app.application.filter import RuleHelper
+from app.application.rules import RuleHelper
-from app.application.filter_rules import RuleParser
+from app.application.rules import RuleParser
-from app.application.filter_rules import BUILTIN_RULE_SET
+from app.application.rules import BUILTIN_RULE_SET
 from app.schemas import CustomRule, FilterRuleGroup
 from app.schemas.event import ConfigChangeEventData
 from app.schemas.types import EventType, SystemConfigKey

app/api/endpoints/system.py

@@ -41,7 +41,7 @@ from app.adapters.external.market import (
 )
 from app.application.messaging.message import MessageHelper
 from app.runtime.progress import ProgressHelper
-from app.application.filter import RuleHelper
+from app.application.rules import RuleHelper
 from app.adapters.external.server import MoviePilotServerHelper
 from app.runtime.state import SystemHelper
 from app.runtime.log import logger

app/application/filter.py

@@ -1,66 +0,0 @@
-from typing import List, Optional
-
-from app.db.oper.systemconfig import SystemConfigOper
-from app.domain.context import MediaInfo
-from app.schemas import CustomRule, FilterRuleGroup
-from app.schemas.types import SystemConfigKey
-
-
-class RuleHelper:
-    """读取用户过滤规则配置，并按媒体上下文选择适用规则组。"""
-
-    @staticmethod
-    def get_rule_groups() -> List[FilterRuleGroup]:
-        """返回用户配置的全部过滤规则组。"""
-        rule_groups: List[dict] = SystemConfigOper().get(
-            SystemConfigKey.UserFilterRuleGroups
-        )
-        if not rule_groups:
-            return []
-        return [FilterRuleGroup(**group) for group in rule_groups]
-
-    def get_rule_group(self, group_name: str) -> Optional[FilterRuleGroup]:
-        """按名称返回过滤规则组。"""
-        return next(
-            (group for group in self.get_rule_groups() if group.name == group_name),
-            None,
-        )
-
-    def get_rule_group_by_media(
-        self,
-        media: Optional[MediaInfo] = None,
-        group_names: Optional[list] = None,
-    ) -> List[FilterRuleGroup]:
-        """按媒体类型、分类和候选名称筛选适用规则组。"""
-        rule_groups = self.get_rule_groups()
-        if group_names:
-            rule_groups = [
-                group for group in rule_groups if group.name in group_names
-            ]
-        return [
-            group
-            for group in rule_groups
-            if not group.media_type
-            or (
-                media
-                and (
-                    (not group.category and group.media_type == media.type.value)
-                    or group.category == media.category
-                )
-            )
-        ]
-
-    @staticmethod
-    def get_custom_rules() -> List[CustomRule]:
-        """返回用户配置的全部自定义过滤规则。"""
-        rules: List[dict] = SystemConfigOper().get(SystemConfigKey.CustomFilterRules)
-        if not rules:
-            return []
-        return [CustomRule(**rule) for rule in rules]
-
-    def get_custom_rule(self, rule_id: str) -> Optional[CustomRule]:
-        """按 ID 返回一条自定义过滤规则。"""
-        return next(
-            (rule for rule in self.get_custom_rules() if rule.id == rule_id),
-            None,
-        )

app/application/rules.py

@@ -1,11 +1,79 @@
-"""过滤规则解析器与内置规则定义，过滤模块与 Agent 工具共享同一事实来源。"""
+"""
+规则域：用户规则组配置访问、内置规则定义与规则解析器，
+过滤模块与 Agent 工具共享同一事实来源。
+"""
 
 import threading
-from typing import Dict
+from typing import Dict, List, Optional
 
 from pyparsing import Forward, Literal, Word, alphas, infix_notation, opAssoc, alphanums, Combine, nums, ParseResults
 
 from app.adapters.system import rust as rust_accel
+from app.db.oper.systemconfig import SystemConfigOper
+from app.domain.context import MediaInfo
+from app.schemas import CustomRule, FilterRuleGroup
+from app.schemas.types import SystemConfigKey
+
+
+class RuleHelper:
+    """读取用户过滤规则配置，并按媒体上下文选择适用规则组。"""
+
+    @staticmethod
+    def get_rule_groups() -> List[FilterRuleGroup]:
+        """返回用户配置的全部过滤规则组。"""
+        rule_groups: List[dict] = SystemConfigOper().get(
+            SystemConfigKey.UserFilterRuleGroups
+        )
+        if not rule_groups:
+            return []
+        return [FilterRuleGroup(**group) for group in rule_groups]
+
+    def get_rule_group(self, group_name: str) -> Optional[FilterRuleGroup]:
+        """按名称返回过滤规则组。"""
+        return next(
+            (group for group in self.get_rule_groups() if group.name == group_name),
+            None,
+        )
+
+    def get_rule_group_by_media(
+        self,
+        media: Optional[MediaInfo] = None,
+        group_names: Optional[list] = None,
+    ) -> List[FilterRuleGroup]:
+        """按媒体类型、分类和候选名称筛选适用规则组。"""
+        rule_groups = self.get_rule_groups()
+        if group_names:
+            rule_groups = [
+                group for group in rule_groups if group.name in group_names
+            ]
+        return [
+            group
+            for group in rule_groups
+            if not group.media_type
+            or (
+                media
+                and (
+                    (not group.category and group.media_type == media.type.value)
+                    or group.category == media.category
+                )
+            )
+        ]
+
+    @staticmethod
+    def get_custom_rules() -> List[CustomRule]:
+        """返回用户配置的全部自定义过滤规则。"""
+        rules: List[dict] = SystemConfigOper().get(SystemConfigKey.CustomFilterRules)
+        if not rules:
+            return []
+        return [CustomRule(**rule) for rule in rules]
+
+    def get_custom_rule(self, rule_id: str) -> Optional[CustomRule]:
+        """按 ID 返回一条自定义过滤规则。"""
+        return next(
+            (rule for rule in self.get_custom_rules() if rule.id == rule_id),
+            None,
+        )
+
 
 # 内置规则只在这里维护一份，便于过滤模块和 Agent 工具共享同一套事实来源。
 BUILTIN_RULE_SET: Dict[str, dict] = {

app/modules/filter/__init__.py

@@ -5,11 +5,11 @@ from typing import List, Tuple, Union, Dict, Optional
 
 from app.domain.context import TorrentInfo, MediaInfo
 from app.domain.metainfo import MetaInfo, clear_rust_parse_options_cache, _rust_parse_options
-from app.application.filter import RuleHelper
+from app.application.rules import RuleHelper
 from app.runtime.log import logger
 from app.modules import _ModuleBase
-from app.application.filter_rules import RuleParser
+from app.application.rules import RuleParser
-from app.application.filter_rules import BUILTIN_RULE_SET
+from app.application.rules import BUILTIN_RULE_SET
 from app.schemas.types import ModuleType, OtherModulesType, SystemConfigKey
 from app.adapters.system import rust as rust_accel
 from app.foundation import size as size_tools

app/runtime/compat/manifest.py

@@ -543,7 +543,7 @@ MODULE_ALIASES: Dict[str, ModuleAlias] = {
         introduced="v3.0.0", owner="application",
     ),
     "app.helper.rule": ModuleAlias(
-        target="app.application.filter", replacement="app.sdk.services",
+        target="app.application.rules", replacement="app.sdk.services",
         introduced="v3.0.0", owner="application",
     ),
     "app.helper.scraper": ModuleAlias(

app/sdk/services.py

@@ -3,7 +3,7 @@
 from app.runtime.extensions.service_registry import ServiceBaseHelper, ServiceConfigHelper
 from app.runtime.state import SystemHelper
 from app.application.downloader import DownloaderHelper
-from app.application.filter import RuleHelper
+from app.application.rules import RuleHelper
 from app.application.mediaserver import (
     MediaServerIdentityHelper,
     MediaServerHelper,

docs/rules/05-architecture.md

@@ -379,7 +379,7 @@ policy. `app/db` therefore has no dependency on `app/domain`.
 | `app/adapters/system/resource.py` | Runtime resource detection/download/installation |
 | `app/adapters/system/fsproxy.py` | Timeout-guarded local filesystem operations in a killable subprocess (with colocated `fsworker.py`) |
 | `app/adapters/external/wechat_crypt.py` | WeChat enterprise-message XML encryption/decryption protocol |
-| `app/application/filter_rules.py` | Built-in torrent filter rule set and rule parser |
+| `app/application/rules.py` | Rule domain: user rule-group config access (`RuleHelper`), built-in torrent filter rule set and rule parser |
 | `app/adapters/external/market.py` | Plugin repository discovery and installation |
 | `app/application/security/url.py` | URL/path validation, SSRF protection and signed image policy |
 | `app/application/mediaserver.py` | Configured media-server discovery and identity matching |

tests/test_system_nettest.py

@@ -51,7 +51,7 @@ _STUB_MODULES = dict([
     _stub("app.application.mediaserver", MediaServerHelper=_Dummy),
     _stub("app.application.messaging.message", MessageHelper=_Dummy),
     _stub("app.runtime.progress", ProgressHelper=_Dummy),
-    _stub("app.application.filter", RuleHelper=_Dummy),
+    _stub("app.application.rules", RuleHelper=_Dummy),
     _stub("app.adapters.external.server", MoviePilotServerHelper=_Dummy),
     _stub("app.runtime.state", SystemHelper=_Dummy),
     _stub("app.application.image", ImageHelper=_Dummy),

tests/test_torrent_filter.py

@@ -5,7 +5,7 @@ from unittest.mock import patch
 from app.domain.context import MediaInfo, TorrentInfo
 from app.application.torrent import TorrentHelper
 from app.modules.filter import FilterModule
-from app.application.filter_rules import BUILTIN_RULE_SET
+from app.application.rules import BUILTIN_RULE_SET
 from app.adapters.system import rust as rust_accel