Command surface mock

Tell agents what outcome to produce.

This starter UI is intentionally static. The production version should persist commands, create agent runs, enqueue workers, and stream verified outputs.

Review the latest JiuJitsuGyms branch and tell me if it is safe to merge.
Create a Vercel preview, run checks, and prepare an Antigravity handoff.
Inspect Supabase migrations and flag anything that could break production.
Add a Stripe product, update the pricing page, test checkout, and open a PR.