M5-M7: сцены, лобби, экран игры и цикл матча

Обе сцены собраны через Code Mode, не руками.

- loader: поднимает модули, прогревает арт карт, уходит в lobby
- lobby: обе UI-ветки в одной сцене (по ARCHITECTURE.md), матч — это
  смена видимого корня, а не загрузка сцены
- GameScreen рисует текущее состояние и доводит узлы твинами, а не
  проигрывает поток событий: узел карты живёт вместе со своей картой,
  поэтому "шестёрка ушла из руки на стол" не требует отдельного случая
- один тап = ход целиком; логика вынесена в core/rules/intent.ts
  и покрыта тестами, в том числе проверкой, что она никогда не предложит
  ход, который правила отвергнут
- арт карт переехал в assets/resources: .pac — это инструкция упаковки
  на сборке, а не рантайм-ассет, и без ссылок на кадры в сборку
  не попадало ничего. Теперь все 37 спрайтов в одной текстуре 2048x2048
- клики кнопок подписываются в коде, а не через clickEvents сцены
- строки интерфейса собраны в одном файле

Сборка web-mobile проходит чисто, все ссылки в сцене проверены.
Вживую не запускалось: браузер в этом окружении не поднимает
главный цикл движка. Подробности — в docs/TECHNICAL.md.

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

docs/TECHNICAL.md

@@ -35,13 +35,13 @@ makes the rules and the save format testable without the engine.
 ```
 assets/
   scenes/
-    loader.scene              module init, then → lobby
-    lobby.scene               main menu; hosts the match UI
+    loader.scene              module init and art preload, then → lobby
+    lobby.scene               Canvas > Background, Safe > LobbyRoot | GameRoot
   prefabs/
     card.prefab               one playing card, face or back
-    ...
+  resources/
+    cards/                    36 faces + back + cards.pac, loaded by path
   art/
-    cards/                    36 faces + back, packed into cards.pac (2048²)
     ui/                       table surface, nine-slice panels and buttons
   scripts/
     core/                     PURE TS — no engine imports
@@ -55,9 +55,10 @@ assets/
                               IStorage + MemoryStorage, CocosStorage (engine)
     app/                      Bootstrap, ServiceLocator, SceneRouter
     ui/
-      lobby/                  lobby screen controller
-      game/                   match screen: hand, table, deck, animations
-      common/                 reusable widgets, safe-area root
+      MainFlow.ts             owns both screens and moves between them
+      lobby/                  LobbyScreen: statistics and the New Game button
+      game/                   GameScreen, CardView, CardLibrary
+      common/                 Theme (layout, palette, timings), Strings
 tests/
   core/                       vitest specs against assets/scripts/core
   support/                    position fixtures and the state invariant checker
@@ -119,6 +120,29 @@ sits behind `IStorage`, so all of the save logic is testable headlessly;
 falls back to an in-memory store when the device refuses to persist (private
 browsing, a full quota) rather than taking the game down.
 
+## The lobby scene
+
+Both screens live in one scene, per ARCHITECTURE.md, so starting a match is a
+change of visible root rather than a scene load:
+
+```
+Canvas  (1080×1920, Canvas + MainFlow)
+  Camera            orthographic, UI_2D only, clears to table green
+  Background        table_bg, widget-stretched
+  Safe              cc.SafeArea — everything tappable is inside it
+    LobbyRoot       LobbyScreen: title, statistics panel, New Game
+    GameRoot        GameScreen + CardLibrary (inactive until a match starts)
+      Deck / OpponentLabel / Message / CardLayer / ActionBar / QuitButton
+      ResultOverlay dimmer, result panel, Back
+```
+
+`GameScreen` renders from the current `GameState` rather than replaying the
+event stream — see docs/DECISIONS.md. Card nodes are pooled and stay bound to
+their `Card` while it is visible, so movement is a tween to a new position.
+
+Buttons are `@property(Button)` references subscribed in `onLoad`; the scene's
+`clickEvents` lists are deliberately empty.
+
 ## Conventions
 
 - TypeScript, 4-space indent, `PascalCase` for types, `camelCase` for members,
@@ -183,10 +207,38 @@ matching `Card.assetName` — that string is the only contract between the rules
 core and the art.
 
 Licence: the faces are LGPL-3.0 and attribution is mandatory. See
-[`assets/art/cards/ATTRIBUTION.md`](../assets/art/cards/ATTRIBUTION.md), which
+[`assets/resources/cards/ATTRIBUTION.md`](../assets/resources/cards/ATTRIBUTION.md), which
 also explains what would have to change to drop the dependency.
 
 ### Builds
 
-Web: `web-mobile` template. Mobile: ASTC textures per [ART.md](ART.md), PNG for
-web.
+A headless build, which is what CI would run:
+
+```bash
+"C:/ProgramData/cocos/editors/Creator/3.8.8/CocosCreator.exe"   --project "C:/Work/fool-cardgame"   --build "platform=web-mobile;debug=true;startScene=<loader.scene uuid>"
+```
+
+It writes to `build/web-mobile` in about 40 seconds. Two caveats: it starts a
+second editor instance, so it competes with a running editor for
+`temp/logs/project.log` and can fail with a duplicate-class error — close the
+editor, or build from its Build panel. And `startScene` must be passed, or the
+build has no launch scene and stops on the splash.
+
+Mobile: ASTC textures per [ART.md](ART.md), PNG for web.
+
+### What is and is not verified
+
+The rules, the bot and the save format are covered by `npm test` and are
+verified. The presentation layer is verified only as far as this environment
+allows: the project builds clean, every component reference in the scene is
+populated, and all 37 card sprites pack into one 2048² texture.
+
+It has **not** been seen running. The browser available here falls back to a
+software renderer that cannot start the Cocos main loop (`totalFrames` stays at
+0), so no screenshot of the actual game was possible. To check it by eye, open
+the project in Cocos Creator and press Preview, or serve `build/web-mobile` over
+HTTP — it is a static folder and needs no server features:
+
+```bash
+npx http-server build/web-mobile -p 8123 -c-1
+```