v0.9.10

[0.9.10] - 2026-07-28

Added

• Published a portable, statically linked x86_64 Linux server archive with
  every release. Extract the archive and run ./citadel; Rust, Cargo, and a
  source checkout are not required.
• Added a public server-release installation guide covering Windows, x86_64
  Linux, configuration validation, upgrades, and safe public deployment.

Changed

• Release automation now builds, validates, and attaches the Linux server ZIP
  alongside the Windows server and client SDK artifacts.

Fixed

• Production deployment commits now use a GitHub-associated author email so
  Vercel can identify the commit author and deploy the release branch.