Code cleanup

[awsr]

• Ignore comment-only lines, trailing comments, and URLs for @stylistic/max-len rule.
• Rewrite to avoid nested ternary (nested ternaries are nice for compactness, but that isn't necessary here and it makes it harder to read).
• Shorten some long lines of code.
• Document ignores waiting for resolution of feat: track CSS custom properties on CSSSourceCode eslint/css#411 .
• Update minimum Node version to ^22.13.0 || >=24 to align with ESLint.
• Update anonymous function syntax and add missing timeout delay.
• Add Split to globals to resolve no-undef rule.
• Adjust usage of logFn to resolve no-func-assign rule.
• Lower @stylistic/max-len rule value to 240.
  • With the current configuration, the longest line (excluding comments) is now only 174 characters.
  • It's very unlikely that there would be code that cannot be rewritten to fit.

[vladmandic]

lgtm.