P0: Electrobun + Angular 22 + Tailwind skeleton boots under Bun

- Electrobun 1.18 shell with branding in src/shared/branding.ts
- Angular 22 zoneless UI in ui/ (workspace), Tailwind v4 shadcn-style tokens
- ng-icons/mynaui icon registry
- Node-version shim so Angular CLI runs under Bun without Node installed
- ssh2 SFTP verified working under Bun against test box

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/shared/branding.ts

@@ -0,0 +1,8 @@
+// The single place to rebrand the app. Everything (window title, bundle name,
+// app-data directory, UI header, icon) reads from here.
+export const BRANDING = {
+	appName: "BunSCP",
+	identifier: "es.teknes.bunscp",
+	version: "0.1.0",
+	icon: "assets/icon.png",
+} as const;