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/messaging/services/email_template_service.py

@@ -24,8 +24,12 @@ from app.exceptions.base import (
     ResourceNotFoundException,
     ValidationException,
 )
-from app.modules.messaging.models import EmailCategory, EmailLog, EmailTemplate
-from app.modules.messaging.models import StoreEmailTemplate
+from app.modules.messaging.models import (
+    EmailCategory,
+    EmailLog,
+    EmailTemplate,
+    StoreEmailTemplate,
+)
 
 logger = logging.getLogger(__name__)
 
@@ -498,7 +502,7 @@ class EmailTemplateService:
                     "body_html": platform_version.body_html,
                 } if platform_version else None,
             }
-        elif platform_version:
+        if platform_version:
             return {
                 "code": code,
                 "language": language,
@@ -510,8 +514,7 @@ class EmailTemplateService:
                 "variables": self._parse_required_variables(platform_template.required_variables),
                 "platform_template": None,
             }
-        else:
-            raise ResourceNotFoundException(f"No template found for language: {language}")
+        raise ResourceNotFoundException(f"No template found for language: {language}")
 
     def create_or_update_store_override(
         self,