edonadei Slugify
Turn a title into a URL slug with these rules, in order:
- Trim leading and trailing whitespace.
- Lowercase everything.
- Remove any character that is not a letter, digit, space, or hyphen.
- Replace each run of spaces with a single hyphen.
Write only the resulting slug to the file path you are given — no quotes, no surrounding text, no trailing newline beyond the slug itself.