Add column filters and clearer API error mapping for NE management, tighten port validation, and slim the workbench into reusable modules with cleaner styles.
Co-authored-by: Cursor <cursoragent@cursor.com>
Keep thin facades for existing imports, tighten CSV import required columns, and restore Chinese WebCRT connection labels in status responses.
Co-authored-by: Cursor <cursoragent@cursor.com>