Add Gitea Actions workflow that builds wraith.exe for Windows amd64,
signs it with an Azure Key Vault certificate via jsign, and uploads
the signed binary with a version.json manifest.
Also adds a `version` var to main.go for -ldflags injection at build time.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Create WraithApp struct in internal/app that initializes SQLite,
runs migrations, seeds themes, and exposes vault management methods
(IsFirstRun, CreateVault, Unlock, IsUnlocked) to the frontend.
Register WraithApp, ConnectionService, ThemeService, and SettingsService
as Wails v3 bound services.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
