feat(ai): configure Architect mode prompt with Spec Kit templates and enforce task completion rules in background runner

vibn-frontend/app/api/projects/[projectId]/plan/generate/route.ts

@@ -16,7 +16,7 @@ export async function POST(
   }
 
   const projectRow = await queryOne<{ data: any; slug: string }>(
-    `SELECT data, slug FROM fs_projects
+    `SELECT fs_projects.data, fs_projects.slug FROM fs_projects
      JOIN fs_users u ON u.id = fs_projects.user_id
      WHERE fs_projects.id = $1 AND u.data->>'email' = $2 LIMIT 1`,
     [projectId, session.user.email]