feat(devcontainer): setup Android SDK/NDK, Java 17, and auto-accept l…

.devcontainer/Dockerfile

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+
+# Dockerfile for RTranslator Codespace
+FROM mcr.microsoft.com/devcontainers/base:ubuntu-22.04
+
+# Install dependencies
+RUN apt-get update && \
+    apt-get install -y wget unzip openjdk-17-jdk git && \
+    rm -rf /var/lib/apt/lists/*
+
+# Set JAVA_HOME
+ENV JAVA_HOME=/usr/lib/jvm/java-17-openjdk-amd64
+ENV PATH="$JAVA_HOME/bin:$PATH"
+
+# Install Android SDK Command-line tools
+ENV ANDROID_SDK_ROOT=/opt/android-sdk
+RUN mkdir -p $ANDROID_SDK_ROOT/cmdline-tools && \
+    wget -q https://dl.google.com/android/repository/commandlinetools-linux-11076708_latest.zip -O /tmp/cmdline-tools.zip && \
+    unzip -q /tmp/cmdline-tools.zip -d $ANDROID_SDK_ROOT/cmdline-tools && \
+    mv $ANDROID_SDK_ROOT/cmdline-tools/cmdline-tools $ANDROID_SDK_ROOT/cmdline-tools/latest && \
+    rm /tmp/cmdline-tools.zip
+
+ENV PATH="$ANDROID_SDK_ROOT/cmdline-tools/latest/bin:$PATH"
+
+FROM mcr.microsoft.com/devcontainers/base:ubuntu
+
+RUN apt-get update && apt-get install -y wget unzip
+
+RUN mkdir -p /home/vscode/android-sdk && cd /home/vscode/android-sdk && \
+    wget https://dl.google.com/android/repository/commandlinetools-linux-11076708_latest.zip && \
+    unzip commandlinetools-linux-11076708_latest.zip -d cmdline-tools && \
+    echo 'export ANDROID_HOME=/home/vscode/android-sdk' >> /home/vscode/.bashrc && \
+    echo 'export PATH=$ANDROID_HOME/cmdline-tools/bin:$ANDROID_HOME/platform-tools:$PATH' >> /home/vscode/.bashrc

.devcontainer/devcontainer.json

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+{
+  "name": "RTranslator Android DevContainer",
+  "build": {
+    "dockerfile": "Dockerfile"
+  },
+  "settings": {
+    "java.configuration.runtimes": [
+      {
+        "name": "JavaSE-17",
+        "path": "/usr/lib/jvm/java-17-openjdk-amd64",
+        "default": true
+      }
+    ]
+  },
+  "postCreateCommand": "bash .devcontainer/postCreateSetup.sh",
+  "remoteUser": "codespace"
+}

.devcontainer/postCreateSetup.sh

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+#!/bin/bash
+set -e
+
+# Set Android SDK root
+export ANDROID_SDK_ROOT=/opt/android-sdk
+export PATH="$ANDROID_SDK_ROOT/cmdline-tools/latest/bin:$PATH"
+
+# Install required SDK packages
+sdkmanager --sdk_root=$ANDROID_SDK_ROOT --install "platform-tools" "platforms;android-33" "build-tools;33.0.2" "ndk;25.1.8937393"
+
+# Accept all licenses
+yes | sdkmanager --licenses --sdk_root=$ANDROID_SDK_ROOT
+
+# Create local.properties for Gradle
+if [ ! -f "$PWD/local.properties" ]; then
+  echo "sdk.dir=$ANDROID_SDK_ROOT" > "$PWD/local.properties"
+fi