tui: don't log.Fatal on appView.Run error

When the user closes their terminal (as opposed to ctrl-c), the terminal
might close the tty without waiting for process-compose to exit. This
causes pcv.appView.Run to return an error, which triggers a log.Fatal:

  ERR Failed to start TUI error="read /dev/tty: input/output error"

This leads to a race where log.Fatal might call os.Exit before the
project's processes can be stopped, leaving them orphaned.

Change log.Fatal to log.Error and explicitly shutdown the project to
make sure processes aren't left behind.

src/tui/view.go

@@ -542,15 +542,17 @@ func RunTUIAsync(project app.IProject, options ...Option) {
 	setupTui(project, options...)
 	go func() {
 		if err := pcv.appView.Run(); err != nil {
-			log.Fatal().Err(err).Msgf("Failed to start TUI")
+			log.Error().Err(err).Msgf("TUI stopped")
+			pcv.handleShutDown()
 		}
 	}()
 }
 
 func RunTUI(project app.IProject, options ...Option) {
 	setupTui(project, options...)
 	if err := pcv.appView.Run(); err != nil {
-		log.Fatal().Err(err).Msgf("Failed to start TUI")
+		log.Error().Err(err).Msgf("TUI stopped")
+		pcv.handleShutDown()
 	}
 }