Files
Ferrous-Solitaire/solitaire_core
root 9e9ce2b752 fix(server): use char count (not byte length) for display_name limit
The leaderboard opt-in handler was calling `.len()` on the display name,
which returns byte count. Multi-byte Unicode characters (emoji, CJK, etc.)
would be rejected well before the 32-character visual limit and with a
misleading error message. Switched to `.chars().count()` to enforce the
limit in terms of Unicode scalar values as the error message advertises.

test(core): add boundary tests for 7 uncovered achievement conditions
test(server): add display_name validation integration tests (empty,
too-long ASCII, 32-emoji succeeds, 33-emoji rejected)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-04-27 03:50:41 +00:00
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