fix(android): use openjdk@21 LTS instead of @24

openjdk@24 not available in brew. Use @21 LTS which
satisfies sdkmanager JDK 17+ requirement.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: pythoninthegrass

taskfiles/android.yml

@@ -25,12 +25,12 @@ tasks:
   setup:
     desc: "Install Android development dependencies"
     env:
-      JAVA_HOME: /opt/homebrew/opt/openjdk@24
-      PATH: /opt/homebrew/opt/openjdk@24/bin:{{.PATH}}
+      JAVA_HOME: /opt/homebrew/opt/openjdk@21
+      PATH: /opt/homebrew/opt/openjdk@21/bin:{{.PATH}}
     cmds:
       - |
         echo "Installing JDK and Android SDK..."
-        for pkg in openjdk@24 android-commandlinetools; do
+        for pkg in openjdk@21 android-commandlinetools; do
           brew list "$pkg" &>/dev/null || brew install "$pkg"
         done
       - |
@@ -42,7 +42,7 @@ tasks:
       - |
         echo "Android setup complete!"
         echo "Add these to your shell profile:"
-        echo '  export JAVA_HOME="/opt/homebrew/opt/openjdk@24"'
+        echo '  export JAVA_HOME="/opt/homebrew/opt/openjdk@21"'
         echo '  export PATH="$JAVA_HOME/bin:$PATH"'
         echo '  export ANDROID_HOME="/opt/homebrew/share/android-commandlinetools"'
         echo '  export ANDROID_NDK_HOME="$ANDROID_HOME/ndk/28.2.13676358"'