feat(studio): deploy manual designer and configurable AI model

scripts/verify-deployment.ts

@@ -49,7 +49,8 @@ try {
         html.match(/<select id="preset">([\s\S]*?)<\/select>/)?.[1] ?? "";
       if (
         (presetMenu.match(/<option value="[^"]+"/g) ?? []).length !== 13 ||
-        !html.includes('id="show-draft"')
+        !html.includes('id="show-draft"') ||
+        !html.includes('id="manual"')
       )
         throw Error(
           "The deployed Studio is missing its thirteen presets or proposal preview controls.",
@@ -103,7 +104,8 @@ try {
   if (
     process.env.APIMART_API_KEY?.trim() &&
     (generation.provider !== "APIMart" ||
-      generation.model !== "gpt-6-luna" ||
+      generation.model !==
+        (process.env.APIMART_MODEL?.trim() || "gpt-5-mini") ||
       generation.delivery !== "polling" ||
       generation.maxAttempts !== 2 ||
       generation.maxOutputTokens !== 8192 ||