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Architecture Overview

Monorepo Structure

firmware/: Bitcoin-only KeepKey firmware
kkcli/: CLI for KeepKey Bitcoin-only operations
vault/: Tauri desktop app

Shared REST API

All endpoint handlers and business logic are in keepkey-rest.
Both kkcli and vault depend on this crate and mount its router.

Shared UI

The Vite UI is developed in vault-ui.
Built bundle is served by kkcli (via REST API) and imported into Vault (Tauri frontend).

Build/Deploy Flow

Single Makefile for unified builds.
Each project can be built/tested independently or all at once.