Add help screen, connection indicators, README and release builds (M7)

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

internal/ui/search.go

@@ -129,11 +129,10 @@ func (v *searchView) loadOptions() {
 	v.mu.Unlock()
 
 	v.app.post(func() {
+		v.app.SetService(v.be.name(), status.Version, err)
 		if err != nil {
 			v.app.SetMessage(fmt.Sprintf("[red]%s: %s", v.be.name(), tview.Escape(err.Error())))
-			return
 		}
-		v.app.SetMessage(fmt.Sprintf("[green]%s %s connected", v.be.name(), tview.Escape(status.Version)))
 	})
 }
 
@@ -204,6 +203,7 @@ func (v *searchView) run(ctx context.Context, gen int, term string) {
 		if gen != v.gen {
 			return // superseded by a newer search
 		}
+		v.app.SetService(v.be.name(), "", err)
 		if err != nil {
 			v.app.SetMessage("[red]Search failed: " + tview.Escape(err.Error()))
 			return