fix(audit): P0-P3 audit fixes — 838 ruff errors → 0, 30 F821 bugs fixed, 118 files changed

- P0: hooks.py 3-tuple fix, trigger_dispatcher Contract, contacts/plugin unregister_actions_by_owner
- P0: 5 test files — check_permission mocks removed, hardcoded DB credential → env var
- P1: attachment_service DmsFile via Contract helper, restore_registry/history_hooks dedup
- P1: mail/plugin restore unregister, mcp_client datetime.now(UTC), saved_views/filters patterns
- P1: ProtectedRoute fail-closed, 13 test assertion fixes (bcrypt, DB-URLs, SECRET_KEYs)
- P2: deprecated notifications → post_system_message (3 files), forgejo Base, report_generator lazy import
- P2: webhooks permissions, deps.py/roles.py plugin perms removed, import_export default
- P2: address/tags/entity_links patterns removed, worker.py Contract-Umgehungen fixed
- P2: 28 frontend TODOs (hardcoded constants, deprecated notification API)
- P3: dead code, duplicates, deprecated imports, private attr, __import__ inline
- P3: 8 frontend TODOs (LucideIcons, inline styles, XSS, i18n)
- ruff: 838 → 0 (612 auto-fix + 246 manual + 27 F821 regression fix)
- F821: 30 → 0 (AutomationDefinition, DmsFile, user_id, Path, Any, String)
- Contract-Umgehungen: 2 neue gefunden (worker.py:169, worker.py:280) und gefixt

app/plugins/builtins/unified_search/provider_registry.py

@@ -5,10 +5,9 @@ from __future__ import annotations
 import logging
 from typing import TYPE_CHECKING, Protocol, runtime_checkable
 
-from sqlalchemy import select
-
 if TYPE_CHECKING:
     import uuid
+
     from sqlalchemy.ext.asyncio import AsyncSession
 
 logger = logging.getLogger(__name__)
@@ -121,47 +120,47 @@ async def auto_register_providers(db: AsyncSession) -> None:
 
     Checks which plugins are active and registers corresponding providers.
     """
-    from app.plugins.builtins.unified_search.providers.contact_provider import (
-        ContactSearchProvider,
-    )
-    from app.plugins.builtins.unified_search.providers.mail_provider import (
-        MailSearchProvider,
-    )
-    from app.plugins.builtins.unified_search.providers.file_provider import (
-        FileSearchProvider,
-    )
-    from app.plugins.builtins.unified_search.providers.event_provider import (
-        EventSearchProvider,
-    )
-    from app.plugins.builtins.unified_search.providers.company_provider import (
-        CompanySearchProvider,
-    )
-    from app.plugins.builtins.unified_search.providers.task_provider import (
-        TaskSearchProvider,
-    )
-    from app.plugins.builtins.unified_search.providers.contactperson_provider import (
-        ContactPersonSearchProvider,
-    )
-    from app.plugins.builtins.unified_search.providers.tag_provider import (
-        TagSearchProvider,
-    )
-    from app.plugins.builtins.unified_search.providers.conversation_provider import (
-        ConversationSearchProvider,
-    )
-    from app.plugins.builtins.unified_search.providers.user_provider import (
-        UserSearchProvider,
-    )
+    from app.plugins.builtins.graph_rag.contracts import GraphRagContract
     from app.plugins.builtins.unified_search.providers.agent_memory_provider import (
         AgentMemorySearchProvider,
     )
     from app.plugins.builtins.unified_search.providers.ai_chat_provider import (
         AIChatSearchProvider,
     )
+    from app.plugins.builtins.unified_search.providers.company_provider import (
+        CompanySearchProvider,
+    )
+    from app.plugins.builtins.unified_search.providers.contact_provider import (
+        ContactSearchProvider,
+    )
+    from app.plugins.builtins.unified_search.providers.contactperson_provider import (
+        ContactPersonSearchProvider,
+    )
+    from app.plugins.builtins.unified_search.providers.conversation_provider import (
+        ConversationSearchProvider,
+    )
+    from app.plugins.builtins.unified_search.providers.event_provider import (
+        EventSearchProvider,
+    )
+    from app.plugins.builtins.unified_search.providers.file_provider import (
+        FileSearchProvider,
+    )
+    from app.plugins.builtins.unified_search.providers.mail_provider import (
+        MailSearchProvider,
+    )
+    from app.plugins.builtins.unified_search.providers.tag_provider import (
+        TagSearchProvider,
+    )
+    from app.plugins.builtins.unified_search.providers.task_provider import (
+        TaskSearchProvider,
+    )
+    from app.plugins.builtins.unified_search.providers.user_provider import (
+        UserSearchProvider,
+    )
     from app.plugins.builtins.unified_search.providers.workflow_provider import (
         WorkflowSearchProvider,
     )
-    from app.plugins.builtins.graph_rag.contracts import GraphRagContract
-    GraphRAGSearchProvider = GraphRagContract.GraphRAGSearchProvider
+    graph_rag_search_provider = GraphRagContract.graph_rag_search_provider
 
     registry = get_search_registry()
     registry.clear()
@@ -181,7 +180,7 @@ async def auto_register_providers(db: AsyncSession) -> None:
         AgentMemorySearchProvider,
         AIChatSearchProvider,
         WorkflowSearchProvider,
-        GraphRAGSearchProvider,
+        graph_rag_search_provider,
     ]:
         try:
             registry.register(provider_cls())