Stage 7 (wip): UI shell, libs, mock transport, screens (lobby->game), e2e smoke

- plain Svelte 5 + TS + Vite (no SvelteKit); CSS-token design system (Telegram-ready), hash router, IndexedDB session
- pure libs: domain model, premium/value maps ported from solver, board replay, placement state machine, i18n en/ru
- in-memory mock transport + seed data; pnpm start runs lobby->active game->board with no backend
- board: pointer-drag + tap placement, MakeMove (popup / 1s-hold commit), two-state zoom, blank chooser, exchange, hint, word-check, chat
- Playwright smoke (mock) green; svelte-check clean; mock bundle ~37 KB gzip

ui/package.json

@@ -0,0 +1,27 @@
+{
+  "name": "scrabble-ui",
+  "private": true,
+  "version": "0.0.0",
+  "type": "module",
+  "description": "Scrabble game client (plain Svelte 5 + Vite). Talks to the gateway over Connect-RPC + FlatBuffers.",
+  "scripts": {
+    "dev": "vite",
+    "start": "vite --mode mock",
+    "build": "vite build",
+    "preview": "vite preview",
+    "check": "svelte-check --tsconfig ./tsconfig.json",
+    "test:unit": "vitest run",
+    "test:watch": "vitest",
+    "test:e2e": "playwright test"
+  },
+  "devDependencies": {
+    "@playwright/test": "^1.49.0",
+    "@sveltejs/vite-plugin-svelte": "^5.0.0",
+    "@types/node": "^22.10.0",
+    "svelte": "^5.15.0",
+    "svelte-check": "^4.1.0",
+    "typescript": "^5.7.0",
+    "vite": "^6.0.0",
+    "vitest": "^3.0.0"
+  }
+}