From the documentation:
The LIKE operator is case sensitive by default for unicode characters that are beyond the ASCII range.
For example:
sqlite> SELECT 'A' LIKE 'a', 'Ä' LIKE 'ä';
┌──────────────┬──────────────┐
│ 'A' LIKE 'a' │ 'Ä' LIKE 'ä' │
├──────────────┼──────────────┤
│ 1 │ 0 │
└──────────────┴──────────────┘
But Turso seems to also fold non-ASCII characters:
turso> SELECT 'A' LIKE 'a', 'Ä' LIKE 'ä';
┌──────────────┬──────────────┐
│ 'A' LIKE 'a' │ 'Ä' LIKE 'ä' │
├──────────────┼──────────────┤
│ 1 │ 1 │
└──────────────┴──────────────┘