Prepare Round 4 QA package version

Ariver

2026-06-03 95c5cdd691f173ead217f7a3df8b46f7fc2b0737

 privatevoice.src/app.go

@@ -27,8 +27,8 @@
)

const (
   appVersion        = "2.1.21"
   appBuild          = "20260603.1327"
   appVersion        = "2.1.22"
   appBuild          = "20260603.1608"
   appDisplayVersion = appVersion + " (build " + appBuild + ")"
   appName           = "PrivateVoice Input"