PR #4 of the multi-device roadmap — desktop client groundwork. The shell
compiles and runs end-to-end on top of a v2.2.0 node; sections are
placeholders that later alphas fill in with real chat / feed / wallet /
contacts / settings content shared with the mobile client-app.
Scaffold:
* Vite + React + TypeScript renderer; Electron main/preload TS
compiled via a separate tsconfig.
* npm scripts — `dev` (concurrent Vite + Electron), `build`
(installer via electron-builder), `typecheck`.
* electron-builder targets: .dmg / .exe / .AppImage + .deb.
* CSP pins script-src 'self'; connect-src left open so the renderer
can hit any configured node.
Electron main + preload:
* Frame-less window, hiddenInset on macOS, custom-overlay on Windows,
drag region via CSS -webkit-app-region: drag on our TitleBar.
* contextIsolation on, nodeIntegration off, sandbox off (needed for
safeStorage in preload).
* window.dchain.keyfile.{load,save,delete,encryptionAvailable} —
keyfile lives in the OS keychain via Electron safeStorage, with a
plaintext fallback for OSes without an encryption backend.
* window.dchain.dialog.{openFile,saveFile}, .fs.{readText,writeText},
.app.{version,platform}. Everything else still goes over plain
fetch() in the renderer.
Shell (src/shell/):
* TitleBar — draggable 32px strip; DChain brand.
* NavBar — left 72px rail, six sections + Cmd+1..5 keybinds.
* StatusBar — ● online/connecting/offline dot, node URL, current
chain height (polls /api/netstats every 5s).
* Shell — composes the 3 panes; picks { List, Detail } by active
section.
Sections (all stubs — filling in alpha5+):
* Messages, Feed, Contacts, Profile — SectionPlaceholder with notes.
* Wallet — shows the balance reading from /api/address/{pub} as a
first real data binding.
* Settings — node-URL card with live ping + commit, identity card
(shows pub key), about card (reads Electron app.version via IPC).
Auth (src/auth/Welcome.tsx):
* Create — generates Ed25519 + X25519 via tweetnacl, saves via IPC.
* Import — Electron dialog.openFile → parses node.json → saves.
* Pair — stub routed; real poll loop reuses the mobile flow in
alpha5.
Lib (src/lib/):
* types.ts — KeyFile / Contact / Message / NodeSettings mirroring
client-app wire formats.
* storage.ts — keyfile via IPC, settings + contacts + device-registered
marker via localStorage.
* api.ts — fetch wrapper with setNodeUrl + onNodeUrlChange;
getNetStats, getIdentity, fetchDevices, getBalance bindings.
* store.ts — zustand { booted, keyFile, settings, contacts, section }.
docs/ROADMAP.md — desktop subsection updated with per-alpha breakdown.
Next (alpha5): Messages section wired to the relay mailbox, full
conversation view, and the pairing poll loop.
