Add start-test.bat for an isolated Docker test stand

Runs a separate compose project (pgames-test) on port 8090 with its own
.env.test and data-test/, starts Docker Desktop if needed and generates a
sample game to upload. env_file in compose is now overridable via ENV_FILE.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

start-test.bat

@@ -0,0 +1,88 @@
+@echo off
+rem Test stand in Docker, isolated from a real install: own compose project,
+rem own .env.test, data in data-test\, port 8090.
+rem   start-test.bat         build and start
+rem   start-test.bat stop    stop (data is kept)
+rem   start-test.bat reset   stop and wipe database and data-test\
+rem   start-test.bat logs    follow backend and worker logs
+setlocal
+chcp 65001 >nul
+cd /d "%~dp0"
+
+set PROJECT=pgames-test
+set ENV_FILE=.env.test
+set PORT=8090
+set COMPOSE=docker compose -p %PROJECT% --env-file %ENV_FILE%
+
+if not exist %ENV_FILE% (
+    echo Создаю %ENV_FILE% с тестовыми настройками
+    (
+        echo SECRET_KEY=test-stand-%RANDOM%%RANDOM%%RANDOM%
+        echo ADMIN_USERNAME=admin
+        echo ADMIN_PASSWORD=admin
+        echo POSTGRES_PASSWORD=pgames
+        echo HTTP_PORT=%PORT%
+        echo DATA_PATH=./data-test
+        echo WORKER_THREADS=4
+        echo COOKIE_SECURE=false
+    ) > %ENV_FILE%
+)
+
+call :ensure_docker || exit /b 1
+
+if /i "%~1"=="stop" (
+    %COMPOSE% down
+    exit /b
+)
+if /i "%~1"=="reset" (
+    %COMPOSE% down -v
+    if exist data-test rmdir /s /q data-test
+    echo Стенд и его данные удалены
+    exit /b
+)
+if /i "%~1"=="logs" (
+    %COMPOSE% logs -f backend worker
+    exit /b
+)
+
+echo Сборка и запуск контейнеров...
+%COMPOSE% up -d --build || (
+    echo Не удалось запустить стенд
+    exit /b 1
+)
+
+echo Жду готовности http://localhost:%PORT% ...
+for /l %%i in (1,1,60) do (
+    curl -fs http://localhost:%PORT%/api/health >nul 2>&1 && goto ready
+    timeout /t 2 /nobreak >nul
+)
+echo Стенд не ответил за 2 минуты. Логи: start-test.bat logs
+exit /b 1
+
+:ready
+if not exist data-test\sample.zip (
+    echo Генерирую тестовую игру data-test\sample.zip
+    %COMPOSE% exec -T backend python -m tests.make_sample /data/sample.zip >nul
+)
+echo.
+echo Стенд запущен: http://localhost:%PORT%
+echo Первый вход: admin / admin (потребуется сменить логин и пароль)
+echo Тестовая игра для загрузки: %CD%\data-test\sample.zip
+echo Остановить: start-test.bat stop   Сбросить: start-test.bat reset
+start "" http://localhost:%PORT%
+exit /b 0
+
+:ensure_docker
+docker info >nul 2>&1 && exit /b 0
+if not exist "%ProgramFiles%\Docker\Docker\Docker Desktop.exe" (
+    echo Docker не запущен и Docker Desktop не найден
+    exit /b 1
+)
+echo Запускаю Docker Desktop...
+start "" "%ProgramFiles%\Docker\Docker\Docker Desktop.exe"
+for /l %%i in (1,1,60) do (
+    timeout /t 3 /nobreak >nul
+    docker info >nul 2>&1 && exit /b 0
+)
+echo Docker не запустился за 3 минуты
+exit /b 1