Two bugs were preventing @image / @video / @character references from
being tagged in prompts written with Chinese, Japanese, or Korean text:
1. The mention-highlight regex was built with just the "g" flag, so a
user-typed "@image6" never matched the canonical label "@Image6" and the
reference was rendered as plain text. Make the regex case-insensitive
and do the colorMap lookup via a lowercase-keyed table so "@image6"
still finds the color for "@Image6".
2. detectMention required the character immediately before "@" to match
/\s/, which never matches CJK characters. Typing "@" right after a
Chinese character like "从" therefore never opened the autocomplete
dropdown, leaving users to type the mention by hand (which then hit bug
1). Replace the whitespace check with a "not an ASCII identifier char"
check so CJK, quotes, and punctuation all count as valid word boundaries
before an @mention.
BFlat
f94fc5bf07