Johnny b78d4c2568 refactor(markdown): use Unicode categories for tag validation ... Replace custom character whitelist with Unicode standards-based validation: - Use unicode.IsLetter/IsNumber/IsSymbol instead of hardcoded lists - Remove manual UTF-8 byte checking for CJK punctuation - Add proper rune-based length limiting (MAX_TAG_LENGTH = 100) - Improve international character support (CJK, Arabic, Cyrillic, etc.) - Add emoji support via unicode.IsSymbol Benefits: - Cleaner, more maintainable code (~50 lines removed) - Standards-based approach following Unicode categories - Better UTF-8 safety with utf8.DecodeRune - Consistent validation between Go backend and TypeScript frontend All existing tests pass with improved Unicode handling.		2025-11-23 23:45:10 +08:00
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tag.go	refactor(markdown): use Unicode categories for tag validation	2025-11-23 23:45:10 +08:00
tag_test.go	fix(parser): support Unicode characters in tags	2025-11-19 22:06:11 +08:00