feat(bot): add /dashboard command and MINI_APP_URL config

- Add /dashboard command to BotFather registration alongside /app
- Add new MINI_APP_URL env var for dashboard URL (separate from CORS origins)
- Pass MINI_APP_URL and BOT_API_URL in CD workflow
- Update Terraform with new variable for future infrastructure deployments

apps/bot/src/i18n/locales/en.ts

@@ -15,6 +15,7 @@ export const enBotTranslations: BotTranslationCatalog = {
     pending_members: 'List pending household join requests',
     approve_member: 'Approve a pending household member',
     app: 'Open the Kojori mini app',
+    dashboard: 'Open the household dashboard',
     keyboard: 'Toggle persistent dashboard button'
   },
   help: {