style(tui): remove steer queued emoji

Keep the /steer acknowledgement plain text so it reads like the rest of the TUI status copy.

ui-tui/src/app/slash/commands/core.ts

@@ -503,7 +503,7 @@ export const coreCommands: SlashCommand[] = [
           ctx.guarded<SessionSteerResponse>(r => {
             if (r?.status === 'queued') {
               ctx.transcript.sys(
-                `⏩ steer queued — arrives after next tool call: "${payload.slice(0, 50)}${payload.length > 50 ? '…' : ''}"`
+                `steer queued — arrives after next tool call: "${payload.slice(0, 50)}${payload.length > 50 ? '…' : ''}"`
               )
             } else {
               ctx.transcript.sys('steer rejected')