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/deps.py

@@ -14,13 +14,12 @@ from sqlalchemy.ext.asyncio import AsyncSession
 from app.config import get_settings
 from app.core.auth import get_redis, get_session_data, refresh_session_ttl
 from app.core.db import get_db, set_tenant_context, set_user_context
+
 logger = logging.getLogger(__name__)
 
 # Known write-permission modules — used by require_write() to check
 # specific permissions instead of broad wildcards like *:write
 _WRITE_PERMISSIONS = [
-    "contacts:write",
-    "contacts:create",
     "users:write",
     "roles:write",
     "audit:write",
@@ -401,10 +400,12 @@ def require_active_plugin(plugin_name: str):
                 return
 
             # Per-tenant activation check with Redis cache
-            from app.core.redis import get_redis
-            from sqlalchemy import text
             import json
 
+            from sqlalchemy import text
+
+            from app.core.redis import get_redis
+
             redis = get_redis()
             if redis is not None:
                 cache_key = f"plugin-activation:{tenant_id}:{plugin_name}"
@@ -454,7 +455,7 @@ def require_active_plugin(plugin_name: str):
             logger.error("Plugin activation check failed for '%s': %s", plugin_name, exc)
             raise HTTPException(
                 status_code=status.HTTP_503_SERVICE_UNAVAILABLE,
-                detail={"detail": f"Plugin activation check failed", "code": "plugin_check_error"},
-            )
+                detail={"detail": "Plugin activation check failed", "code": "plugin_check_error"},
+            ) from exc
 
     return _check