0.9.1 — Complete translations for all 29 languages

Added

• Full translation parity across all 29 languages. Every translation file
  was brought up to date with en.json (391 keys). Previously all non-English
  languages were ~74 keys behind, so recently added strings fell back to
  English. Newly localized strings include:
  • Repair issues shown to users: the certificate-expiring notice (with
    renewal steps) and the camera-tool-available notice.
  • Service/error messages (exceptions.*): certificate errors, rawscan and
    scenario lookups, smoke-test and alarm-state failures.
  • Entity names added in recent releases: Installation Profile (incl.
    Indoor/Outdoor states), Dimmer Phase Control, the renamed
    Smart Sensitivity Security/Comfort Level and
    Orientation Light Response Time selects, the Floor Temperature,
    Purity, Air Quality, *_rating, Energy/Power Yield, Valve Tappet
    and Detection Test State sensors, the Call for Heat, Vibration,
    Smoke, Occupancy and Tamper binary sensors, the Motion Light and
    the Preview Min/Max Brightness buttons.
  • The complete Slovak (sk) translation contributed in #354.

Fixed

• Removed stale translation keys left behind by earlier entity renames
  (smart_sensitivity_security, smart_sensitivity_comfort,
  orientation_light_response, detection_state) from every language file.
  These four entities showed English names in all non-English locales.

Developer

• New scripts/check-translations.py gate enforces full en.json key
  parity for every translation file (no missing fall-throughs, no stale
  keys) and keeps en.json in sync with strings.json. Wired into both
  scripts/local-ci.sh and the Quality CI workflow, replacing the previous
  shallow options.features-only check.