🎨 chore(web): apply ESLint and Prettier auto-fixes (baseline)

- Ran: bun run eslint:fix && bun run lint:fix
- Inserted AGPL license header via eslint-plugin-header
- Enforced no-multiple-empty-lines and other lint rules
- Formatted code using Prettier v3 (@so1ve/prettier-config)
- No functional changes; formatting-only baseline across JS/JSX files

web/src/hooks/chat/useTokenKeys.js

@@ -46,4 +46,4 @@ export function useTokenKeys(id) {
   }, []);
 
   return { keys, serverAddress, isLoading };
-} 
+}