Asale client v0.1.5

Installers for all three platforms, built by the release workflow.

Before publishing, confirm:

• the macOS .dmg is signed and notarized (otherwise other machines report it as damaged)
• the Windows installer is Authenticode-signed (otherwise SmartScreen warns)
• every bundle has a matching .sig next to it (required for auto-update)
• install once and verify login and going on the market, then publish manually