fix(lint): auto-fix ruff violations and tune lint rules

- Auto-fixed 4,496 lint issues (import sorting, modern syntax, etc.)
- Added ignore rules for patterns intentional in this codebase:
  E402 (late imports), E712 (SQLAlchemy filters), B904 (raise from),
  SIM108/SIM105/SIM117 (readability preferences)
- Added per-file ignores for tests and scripts
- Excluded broken scripts/rename_terminology.py (has curly quotes)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/modules/billing/definition.py

@@ -9,7 +9,13 @@ route configurations, and scheduled tasks.
 import logging
 from typing import Any
 
-from app.modules.base import MenuItemDefinition, MenuSectionDefinition, ModuleDefinition, PermissionDefinition, ScheduledTask
+from app.modules.base import (
+    MenuItemDefinition,
+    MenuSectionDefinition,
+    ModuleDefinition,
+    PermissionDefinition,
+    ScheduledTask,
+)
 from app.modules.enums import FrontendType
 
 logger = logging.getLogger(__name__)