Adapt Android mobile controls and native client UI

.gitignore

@@ -1,11 +1,7 @@
-# Metin2 game assets (project/asset_root.gd). Committed to THIS self-hosted
-# private repo for one-clone multi-device builds. Do not publish/redistribute
-# — copyrighted Ymir art.
+# Metin2 game assets are private. Do not publish or redistribute Ymir art.
 
 # build
 /build/
-# 渲染测试的落图输出（test/rendering 用例自建）
-/project/build/
 /build-ios/
 /build-android/
 /build-classic/
@@ -16,24 +12,6 @@
 /build-native/
 compile_commands.json
 
-# godot
-/project/.godot/
-/project/bin/*.dylib
-/project/bin/*.dSYM/
-/project/bin/*.so
-/project/bin/*.dll
-/project/bin/*.wasm
-/project/bin/ios/
-/project/bin/android/
-# The embedded interpreter's stdlib, copied here from the build tree so the exporter packs it
-# (extension/CMakeLists.txt, 批次 2P step 3c). Derived — never committed.
-/project/python27.zip
-/project/python27.zip.sha256
-# Android Gradle build template (~1.2 GB of regenerable Gradle output + Godot
-# .aar). Recreate per machine:
-#   godot --headless --path project --install-android-build-template \
-#     --export-debug Android build/export/mtgodot-poc.apk
-/project/android/
 
 # misc
 .DS_Store
@@ -76,8 +54,8 @@ __pycache__/
 /test/compare-shots/
 /test/compare-report.json
 
-# Written by 40250 uitaskbar.py (SaveMouseButtonSettings) into the working directory at runtime.
-/project/mouse.cfg
+# Written by 40250 uitaskbar.py at runtime.
+/mouse.cfg
 
 # native Android client (./build-android-native.sh): SDL3 download, NDK builds, Gradle output
 /build-android-native/