fix(ui): 自定义工具表单 overflow-y-scroll→auto + 认证方式NONE翻译改为'无' + Captain文档爬虫/同步后端

backend/migrations/000062_captain_document_file_fields.down.sql

@@ -0,0 +1,4 @@
+ALTER TABLE captain_documents DROP COLUMN IF EXISTS file_size;
+ALTER TABLE captain_documents DROP COLUMN IF EXISTS content_type;
+ALTER TABLE captain_documents DROP COLUMN IF EXISTS file_url;
+ALTER TABLE captain_documents ALTER COLUMN external_link SET NOT NULL;