0.7.0

[0.7.0] - 2026-07-19

Added

• Bilingual UI (Japanese / English). All menu, toolbar, dialog, and status
  strings are now translatable. The UI language follows the system locale
  (Japanese system → Japanese UI, anything else → English) and can be forced
  via the new 表示 → 言語 / Language menu (applied after restart). Source
  strings remain Japanese; the English catalog lives in i18n/spindle_en.ts
  (refresh with the update_translations CMake target, compiled into the
  binary by lrelease at build time).