Fix duplicate menus on update and exit on signals

Also fixes a few fit-and-finish items for better developer experience

app/lifecycle/updater.go

@@ -23,8 +23,9 @@ import (
 )
 
 var (
-	UpdateCheckURLBase = "https://ollama.com/api/update"
-	UpdateDownloaded   = false
+	UpdateCheckURLBase  = "https://ollama.com/api/update"
+	UpdateDownloaded    = false
+	UpdateCheckInterval = 60 * 60 * time.Second
 )
 
 // TODO - maybe move up to the API package?
@@ -112,7 +113,6 @@ func IsNewReleaseAvailable(ctx context.Context) (bool, UpdateResponse) {
 	return true, updateResp
 }
 
-// Returns true if we downloaded a new update, false if we already had it
 func DownloadNewRelease(ctx context.Context, updateResp UpdateResponse) error {
 	// Do a head first to check etag info
 	req, err := http.NewRequestWithContext(ctx, http.MethodHead, updateResp.UpdateURL, nil)
@@ -144,7 +144,7 @@ func DownloadNewRelease(ctx context.Context, updateResp UpdateResponse) error {
 	// Check to see if we already have it downloaded
 	_, err = os.Stat(stageFilename)
 	if err == nil {
-		slog.Debug("update already downloaded")
+		slog.Info("update already downloaded")
 		return nil
 	}
 
@@ -231,7 +231,7 @@ func StartBackgroundUpdaterChecker(ctx context.Context, cb func(string) error) {
 				slog.Debug("stopping background update checker")
 				return
 			default:
-				time.Sleep(60 * 60 * time.Second)
+				time.Sleep(UpdateCheckInterval)
 			}
 		}
 	}()