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/report_generator/plugin.py

@@ -3,10 +3,7 @@
 from __future__ import annotations
 
 from app.plugins.base import BasePlugin
-from app.plugins.manifest import PluginManifest, PluginRouteDef, FrontendMenuItem, FrontendPageRoute
-
-# Register background jobs (isolated report generation in worker)
-from app.plugins.builtins.report_generator import jobs  # noqa: F401
+from app.plugins.manifest import FrontendMenuItem, FrontendPageRoute, PluginManifest, PluginRouteDef
 
 
 class ReportGeneratorPlugin(BasePlugin):
@@ -35,11 +32,23 @@ class ReportGeneratorPlugin(BasePlugin):
         page_routes=[
             FrontendPageRoute(path='/reports', component='@/pages/Reports', protected=True),
         ],
-    
+
         author="LeoCRM Team",
         min_app_version="1.0.0",
         contract_version="1.0.0")
 
+    def get_entity_models(self) -> dict[str, type]:
+        from app.plugins.builtins.report_generator.models import ReportInstance, ReportTemplate
+        return {"report_template": ReportTemplate, "report_instance": ReportInstance}
+
+    async def on_activate(
+        self, db, service_container, event_bus
+    ) -> None:
+        """Activate plugin: register background jobs and event listeners."""
+        # Register background jobs (isolated report generation in worker)
+        from app.plugins.builtins.report_generator import jobs  # noqa: F401
+        await super().on_activate(db, service_container, event_bus)
+
     async def on_deactivate(
         self, db, service_container, event_bus
     ) -> None: