v0.1.0-beta.1

The first tagged release of CountdownSolver, a native Countdown (Letters,
Numbers, Conundrum) solver with a Qt6 desktop app. Tagged as a beta
for one specific reason, called out below — everything else here is
release-quality.

Known limitations

• Non-English gameplay isn't wired end-to-end yet. Settings lets you
  switch the display language to French, German, Spanish, Arabic,
  Hebrew, or Yiddish, and the UI chrome — menus, buttons, Settings
  itself — translates correctly, including right-to-left layout for
  Arabic and Hebrew. But the Letters/Numbers/Conundrum rounds and the
  solver's dictionary are only fully wired for English so far —
  switching languages changes the UI, not yet the game. Closing this gap
  is the target for the next release.

Added

• Solver engine. A C++23 library solving all three Countdown round
  types — Letters, Numbers, Conundrum — generalized beyond a hardcoded
  26-letter English alphabet so other scripts can plug in (the
  groundwork for the multilingual work above).
• Qt6 desktop app. Native UI for all three game types, with
  light, dark, and system (follows the OS setting) theming.
• Multilingual UI infrastructure. A language picker covering 6
  languages beyond English, RTL layout support, and a CI check that
  fails the build if any UI string is added or changed without a
  finished translation in every language.
• Security-hardened build pipeline. CodeQL, dependency-review,
  OSV-Scanner, and OpenSSF Scorecard all gate every PR; every release
  package carries a Sigstore build-provenance attestation.

Artifacts

Checksummed, with build-provenance attestations:

Platform	Files
Windows	CountdownSolver-0.1.0-win64.zip
macOS	CountdownSolver-0.1.0-Darwin.dmg · CountdownSolver-0.1.0-Darwin.zip
Linux	CountdownSolver-0.1.0-Linux.deb · .rpm · .tar.gz · .zip
Provenance	sha256sum -c SHA256SUMS; gh attestation verify <file> --repo iainchesworth/CountdownSolver