Add GraphQL API endpoint, Nuxt UI data panel, and Docker setup

[dylangriffinshub]

Summary

Implements the frontend-development and backend-integration skills the role calls for, using satvis's existing Vue 3 + CesiumJS + Cloudflare Worker stack:

• GraphQL backend API — new POST /api/graphql endpoint in the worker wrapping the existing GP KV store, with groups, group(name:), and satellite(name:) resolvers. Zero external dependencies (hand-rolled parser over the fixed schema).
• Frontend to backend integration — a typed graphql.ts client that probes the worker and falls back to the committed static snapshot, plus a SatelliteGraphqlPanel (Nuxt UI, the project's component library) mounted as a toolbar toggle in Satvis.vue.
• Docker — Dockerfile + docker-compose.yml that build the Vite frontend and serve the static bundle (the app self-hosts via the data/gp/ snapshot when no worker is reachable).
• Cesium and TypeScript are unchanged and remain the rendering core.

Test plan

• pnpm --filter satvis-worker test (resolver unit tests in worker/test/graphql.test.ts)
• pnpm test (client fallback tests in src/modules/util/graphql.test.ts)
• pnpm run build and docker build -t satvis:local .

Notes

• The repo is Vue/Nuxt UI, not React/Chakra, so the UI work uses the project's actual component library rather than dropping in a different framework.
• worker/src/config/satvis.generated.json is gitignored and regenerated by pnpm generate-groups in CI.