feat(web): bootstrap cadence ui foundation

docs/roadmaps/archive/web-frontend-cadence-ui-bootstrap.md

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+# Web Frontend Cadence UI Bootstrap
+
+## Status
+
+- `completed`
+
+## Owner
+
+- Codex
+
+## Started At
+
+- `2026-03-20`
+
+## Goal
+
+- Bootstrap the `apps/web` frontend with copied-in `cadence-ui` components and shared token styles so Phase 2 web UI work can build on the project component library instead of the bare Vite scaffold.
+
+## Scope
+
+- create an execution trace for this frontend bootstrap slice
+- install the initial `cadence-ui` component set into `apps/web`
+- wire the Cadence token stylesheet into the frontend entrypoint
+- validate the frontend workspace build after the component copy-in
+- keep `docs/implementation-roadmap.md` synchronized with the new frontend state
+
+## Checklist
+
+- [x] create the active execution roadmap for the Cadence UI frontend bootstrap workstream
+- [x] install the initial `cadence-ui` component set into `apps/web`
+- [x] wire `apps/web/src/main.tsx` to load `cadence-ui` token styles
+- [x] validate the frontend workspace build and resolve any dependency gaps
+- [x] update `docs/implementation-roadmap.md`
+- [x] archive this execution roadmap with a completion summary if the slice is fully complete
+
+## Files
+
+- `docs/roadmaps/archive/web-frontend-cadence-ui-bootstrap.md`
+- `docs/implementation-roadmap.md`
+- `apps/web/package.json`
+- `apps/web/src/main.tsx`
+- `apps/web/src/cadence-ui/`
+- `pnpm-lock.yaml`
+
+## Decisions
+
+- start Phase 2 frontend work by copying in the shared component library instead of building bespoke primitives inside `apps/web`
+
+## Blockers
+
+- none
+
+## Next Step
+
+- build the first Phase 2 product screens in `apps/web` on top of the copied-in Cadence UI primitives, installing additional registry components only when those screens need them
+
+## Completion Summary
+
+- ran the `cadence-ui` registry installer from `/Users/xd/project/cadence-ui` and copied the initial component set into `apps/web/src/cadence-ui`, including shared tokens plus button, input, textarea, dialog, form, tabs, card, badge, and alert primitives
+- wired `apps/web/src/main.tsx` to import `./cadence-ui/tokens/styles.css` so the copied-in components share the library token base from app startup
+- installed the newly required frontend dependencies into the workspace, refreshed `pnpm-lock.yaml`, and verified the result with `pnpm run web:build`
+- synchronized `docs/implementation-roadmap.md` so Phase 2 frontend work now explicitly continues from the Cadence UI foundation