Add the Android app: a WebView around public_html
A single Activity holding one WebView, in Java rather than Kotlin — for ~120 lines of setup Kotlin would only add its Gradle plugin, its stdlib in the APK and a third version to keep aligned with Gradle and AGP. One dependency: androidx.webkit 1.16.0. The assets are served from https://appassets.androidplatform.net through WebViewAssetLoader rather than file://. That is the part that matters: an https origin is a secure context, and localStorage — which holds every setting and the match in progress — is blocked on file://, so a saved game would silently vanish. Confirmed on device: force-quit mid-match and everything comes back. public_html stays the only copy of the web app. A task syncs it into the assets at build time, so the browser version and the app version cannot drift; the APK's index.html hashes identical to the working tree. sw.js is left out on purpose — it is cache-first, and a service-worker cache outlives an app upgrade, so it would serve a stale index.html with no way to clear it. The APK is the cache now. Three web APIs don't exist in a WebView, so the Activity supplies them: FLAG_KEEP_SCREEN_ON for navigator.wakeLock, native immersive mode for requestFullscreen(), and LAYOUT_IN_DISPLAY_CUTOUT_MODE_SHORT_EDGES so the panels' env(safe-area-inset-*) has something to report. textZoom is pinned to 100: the layout is built on clamp() and vw, and a large system font would scale the text inside it. The manifest declares no permissions whatsoever. Wiring note: AGP 9 refuses a Provider in sourceSets.assets.srcDir, since it can't tell generated from static directories. The sync is a task with a DirectoryProperty output, attached via androidComponents.onVariants, which is the supported path and carries the task dependency. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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Claude Opus 5
Vendored
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@rem
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@rem Copyright 2015 the original author or authors.
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@rem
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@rem Licensed under the Apache License, Version 2.0 (the "License");
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@rem you may not use this file except in compliance with the License.
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@rem You may obtain a copy of the License at
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@rem
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@rem https://www.apache.org/licenses/LICENSE-2.0
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@rem
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@rem Unless required by applicable law or agreed to in writing, software
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@rem distributed under the License is distributed on an "AS IS" BASIS,
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@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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@rem See the License for the specific language governing permissions and
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@rem limitations under the License.
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@rem
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@rem SPDX-License-Identifier: Apache-2.0
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@rem
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@if "%DEBUG%"=="" @echo off
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@rem ##########################################################################
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@rem
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@rem gradlew startup script for Windows
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@rem
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@rem ##########################################################################
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@rem Set local scope for the variables, and ensure extensions are enabled
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setlocal EnableExtensions
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set DIRNAME=%~dp0
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if "%DIRNAME%"=="" set DIRNAME=.
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@rem This is normally unused
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set APP_BASE_NAME=%~n0
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set APP_HOME=%DIRNAME%
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@rem Resolve any "." and ".." in APP_HOME to make it shorter.
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for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
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@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
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set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
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@rem Find java.exe
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if defined JAVA_HOME goto findJavaFromJavaHome
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set JAVA_EXE=java.exe
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%JAVA_EXE% -version >NUL 2>&1
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if %ERRORLEVEL% equ 0 goto execute
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echo. 1>&2
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echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
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echo. 1>&2
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echo Please set the JAVA_HOME variable in your environment to match the 1>&2
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echo location of your Java installation. 1>&2
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"%COMSPEC%" /c exit 1
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:findJavaFromJavaHome
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set JAVA_HOME=%JAVA_HOME:"=%
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set JAVA_EXE=%JAVA_HOME%/bin/java.exe
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if exist "%JAVA_EXE%" goto execute
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echo. 1>&2
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echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
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echo. 1>&2
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echo Please set the JAVA_HOME variable in your environment to match the 1>&2
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echo location of your Java installation. 1>&2
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"%COMSPEC%" /c exit 1
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:execute
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@rem Setup the command line
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@rem Execute gradlew
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@rem endlocal doesn't take effect until after the line is parsed and variables are expanded
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@rem which allows us to clear the local environment before executing the java command
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endlocal & "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %* & call :exitWithErrorLevel
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:exitWithErrorLevel
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@rem Use "%COMSPEC%" /c exit to allow operators to work properly in scripts
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"%COMSPEC%" /c exit %ERRORLEVEL%
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