facet-rs / facet / 20074091239

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feat(facet-diff): show character-level details for visually confusable strings

When two strings look identical but differ in invisible characters (like
NBSP vs regular space), facet-diff now detects this and shows exactly
which positions differ with their Unicode code points and names.

Example output:
  content: "bug report" → "bug report"
  (strings appear identical but differ in 1 position)
    [3]: '\u{00A0}' (NO-BREAK SPACE) → '\u{0020}' (SPACE)

Covers: various Unicode spaces, zero-width characters, line endings.

Closes #1209

142 of 206 new or added lines in 2 files covered. (68.93%)

26453 of 45317 relevant lines covered (58.37%)

626.55 hits per line