Initial scaffold for the decoupled labdev dashboard. Same stack our
labs/adapters frontend wave scaffolds (react-vite + tanstack-query +
tanstack-router + tailwind + shadcn + zustand + zod-types + react-
hook-form) — we eat our own dog food.

  Build      Vite 5 + React 18 + TS strict (`@/*` → `src/*`).
             `npm run build` → tsc --noEmit + vite build → dist/.
             dist/ is consumed by labdev's CI (M7 Phase J-style
             clone+build+go:embed); never committed.

  Routing    TanStack Router file-based via @tanstack/router-plugin.
             routeTree.gen.ts is .gitignored. Six routes wired:
             / (overview, live) + /infra /gates /logs /config /about
             (placeholders for subsequent sessions).

  Data       TanStack Query v5 with dashboard-tuned defaults (5s
             stale, 5min gc, retry 1). All command dispatch funnels
             through `dispatch(name, input)` in src/lib/api.ts which
             POSTs to /api/commands/<name> and surfaces labdev's
             LBDxxxx error codes via CommandError. stream(topic, cb)
             helper for SSE.

  Types      Zod schemas in src/lib/types/api.ts mirror labdev's Go
             I/O types. First wave covers service.status,
             service.run, workspace.validate. Convention: TS type is
             always z.infer<typeof Schema>; never hand-write.

  Styles     Tailwind v3 with CSS variables for shadcn theming
             (slate / new-york). src/lib/utils.ts provides cn().
             components.json pre-configured for `npx shadcn add`.

  Dev loop   `LABDEV_API_PORT=5099 npm run dev` serves on 5180 with
             /api/ proxied to labdev. Vite HMR for view changes;
             labdev only rebuilds when API or Command shapes change.

  Docs       README.md explains the two-repo split + dev loop.
             AGENTS.md is the cross-tool agent context (Claude /
             Cursor / Copilot) — rules of the road + where to put
             new code.

Subsequent sessions: wire /infra (poll infra.* commands), /gates
(workspace.validate + tail), /logs (SSE stream), /config (config.*
commands once M7 lands them), and add shadcn primitives as needed.
labdev's internal/httpserver/ ships in parallel — first end-to-end
demo when both halves meet on /api/commands/service.status.