Updated translations for all 82 languages, bringing 30 to 100% completion.

- Synchronized all PO files with latest POT template
- Removed obsolete translations
- Fixed fuzzy entries and format specification mismatches
- Added translations for new features: AI Assistant, sound themes, sleep mode, navigator focus
- Fixed plural forms for languages with complex plural rules (Serbian, Latvian, etc.)

Fully complete languages (30): bg, ca, cs, da, de, el, en_GB, es, eu, fr, gl, hu, id, it, ka, lt, lv, ms, nl, pl, pt, pt_BR, ro, ru, sl, sr, sv, tr, uk, zh_CN

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

po/LINGUAS

@@ -76,7 +76,7 @@ te
 tg
 th
 tr
-ug 
+ug
 uk
 vi
 zh_CN