Function normalizeName

Reduce a display name to a canonical lookup key.

The transform, in order:

1. Unicode NFD-decompose, then strip combining marks — Khârn → Kharn.
2. Casefold to lower case.
3. Remove apostrophe and quote variants (' ’ ‘ \ " “ ”) — T'au→Tau`.
4. Collapse any run of whitespace or hyphens to a single space, then trim — Be'lakor → belakor, the betrayer → the betrayer.

The result is intended only for comparison; it is not a display value.