• Update current Unicode version in emoji_picker.py to 18.0
• Update emoji-data.txt, emoji-sequences.txt, emoji-test.txt, emoji-variation-sequences.txt, emoji-zwj-sequences.txt to Unicode 18.0.0 released 2026-09-16
• Update UnicodeData.txt, DerivedAge.txt, Blocks.txt, NameAliases.txt to Unicode 18.0.0
• Translation update from Weblate (ca 100.0%, el 29.6%, zh_CN 100.0%, zh_TW 87.0%)