feat: update user and agent messages width and alignment (#515)

Co-authored-by: adamdottv <2363879+adamdottv@users.noreply.github.com>

packages/tui/internal/app/app.go

@@ -21,6 +21,7 @@ import (
 )
 
 var RootPath string
+var CwdPath string
 
 type App struct {
 	Info      opencode.App
@@ -61,6 +62,7 @@ func New(
 	httpClient *opencode.Client,
 ) (*App, error) {
 	RootPath = appInfo.Path.Root
+	CwdPath = appInfo.Path.Cwd
 
 	configInfo, err := httpClient.Config.Get(ctx)
 	if err != nil {