- replace legacy .eslintrc files with flat eslint.config.js
- consolidate eslint globals for improved code clarity
- enable prefer-const and no-unused-vars off in *.js for flexibility
- remove unused import statements and redundant eslint directives from epic-games.js and aliexpress.js
- standardize function parameter syntax to arrow with parentheses omitted where safe
- add comments marking unused but retained functions for reference
