MANUAL RUN: deploy git-recon battles online (first live room) #1204

Follow-up to #1184. The Worker and the per-room Durable Object are built, and tested locally under wrangler dev. Nothing is deployed yet: the first deploy is yours, because it creates a live resource on the account.

cd apps/git-recon
bun run deploy        # vite build && wrangler deploy: one Worker, one DO class

Then open the workers.dev URL in two browsers, Host in one and Join with the code in the other. The README's "Battles online" section prices a room at about $0.03 an hour for 32 players. An idle room closes after five minutes. Check the first bill against that.