fix: correct tojson|safe usage in templates and update validator

- Remove |safe from |tojson in HTML attributes (x-data) - quotes must
  become " for browsers to parse correctly
- Update LANG-002 and LANG-003 architecture rules to document correct
  |tojson usage patterns:
  - HTML attributes: |tojson (no |safe)
  - Script blocks: |tojson|safe
- Fix validator to warn when |tojson|safe is used in x-data (breaks
  HTML attribute parsing)
- Improve code quality across services, APIs, and tests

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

scripts/test_logging_system.py

@@ -18,6 +18,7 @@ from pathlib import Path
 project_root = Path(__file__).parent.parent
 sys.path.insert(0, str(project_root))
 
+
 def test_logging_endpoints():
     """Test logging-related API endpoints."""
     print("\n" + "=" * 70)
@@ -34,7 +35,7 @@ def test_logging_endpoints():
         # Create an exception log
         try:
             raise ValueError("Test exception for logging")
-        except Exception as e:
+        except Exception:
             logging.error("Test exception logging", exc_info=True)
 
         print("  ✓ Test logs created")
@@ -69,9 +70,12 @@ def test_logging_endpoints():
             print(f"  ✓ Database logs count: {count}")
 
             if count > 0:
-                recent = db.query(ApplicationLog).order_by(
-                    ApplicationLog.timestamp.desc()
-                ).limit(5).all()
+                recent = (
+                    db.query(ApplicationLog)
+                    .order_by(ApplicationLog.timestamp.desc())
+                    .limit(5)
+                    .all()
+                )
 
                 print("  Recent logs:")
                 for log in recent:
@@ -90,9 +94,15 @@ def test_logging_endpoints():
 
         db = SessionLocal()
         try:
-            log_level = admin_settings_service.get_setting_value(db, "log_level", "INFO")
-            max_size = admin_settings_service.get_setting_value(db, "log_file_max_size_mb", 10)
-            retention = admin_settings_service.get_setting_value(db, "db_log_retention_days", 30)
+            log_level = admin_settings_service.get_setting_value(
+                db, "log_level", "INFO"
+            )
+            max_size = admin_settings_service.get_setting_value(
+                db, "log_file_max_size_mb", 10
+            )
+            retention = admin_settings_service.get_setting_value(
+                db, "db_log_retention_days", 30
+            )
 
             print(f"  ✓ Log Level: {log_level}")
             print(f"  ✓ Max File Size: {max_size} MB")
@@ -118,6 +128,7 @@ def test_logging_endpoints():
 if __name__ == "__main__":
     # Set up logging first
     from app.core.logging import setup_logging
+
     setup_logging()
 
     success = test_logging_endpoints()