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/commands/base.py

@@ -15,9 +15,8 @@ import uuid
 from dataclasses import dataclass, field
 from typing import Any
 
-from sqlalchemy.ext.asyncio import AsyncSession
-
 import redis.asyncio as aioredis
+from sqlalchemy.ext.asyncio import AsyncSession
 
 from app.core.permissions import check_permission
 
@@ -41,12 +40,12 @@ class CommandResult:
     events: list[dict] = field(default_factory=list)
 
     @classmethod
-    def ok(cls, data: dict | None = None, events: list[dict] | None = None) -> "CommandResult":
+    def ok(cls, data: dict | None = None, events: list[dict] | None = None) -> CommandResult:
         """Create a successful result."""
         return cls(success=True, data=data, events=events or [])
 
     @classmethod
-    def fail(cls, error: str) -> "CommandResult":
+    def fail(cls, error: str) -> CommandResult:
         """Create a failed result."""
         return cls(success=False, error=error)