update readme and mkdocs favicon

.github/workflows/build.yml

@@ -58,7 +58,7 @@ jobs:
         run: |
           if [ ! -d "sdl3/.git" ]; then
             echo "Cloning SDL3 repository..."
-            git clone --depth 1 --branch main https://github.com/libsdl-org/SDL.git sdl3
+            git clone --depth 1 --branch release-3.2.4 https://github.com/libsdl-org/SDL.git sdl3
           else
             echo "SDL3 source is already present (possibly from cache)."
           fi
@@ -77,7 +77,7 @@ jobs:
       - name: Build Prosperon (Linux)
         run: |
           export PKG_CONFIG_PATH="${PWD}/sdl3-build/installed_sdl3/lib/pkgconfig:$PKG_CONFIG_PATH"
-          meson setup build_dbg -Dbuildtype=debugoptimized
+          meson setup build_dbg -Dbuildtype=release -Db_lto=true -Db_ndebug=true
           meson compile -C build_dbg
 
       # 8) Create minimal artifact folder (Linux)
@@ -109,7 +109,7 @@ jobs:
       - name: Install Dependencies (macOS)
         run: |
           brew update
-          brew install sdl3 meson ninja cmake ccache
+          brew install sdl3 ccache ninja meson
 
       # 3) Configure ccache
       - name: Configure ccache
@@ -131,7 +131,7 @@ jobs:
         run: |
           # Ensure pkg-config can find Homebrew's SDL3 .pc files
           export PKG_CONFIG_PATH="$(brew --prefix sdl3)/lib/pkgconfig:$PKG_CONFIG_PATH"
-          meson setup build_macos -Dbuildtype=debugoptimized
+          meson setup build_macos -Dbuildtype=release -Db_lto=true -Db_ndebug=true
           meson compile -C build_macos
 
       # 6) Copy SDL3 .dylib from Homebrew for packaging
@@ -203,7 +203,7 @@ jobs:
         run: |
           if [ ! -d "sdl3-win/.git" ]; then
             echo "Cloning SDL3 for Windows cross..."
-            git clone --depth 1 --branch main https://github.com/libsdl-org/SDL.git sdl3-win
+            git clone --depth 1 --branch release-3.2.4 https://github.com/libsdl-org/SDL.git sdl3-win
           else
             echo "SDL3-win source already present (possibly from cache)."
           fi
@@ -230,7 +230,7 @@ jobs:
       # 8) Build Prosperon (Windows cross)
       - name: Build Prosperon (Windows cross)
         run: |
-          meson setup -Dbuildtype=debugoptimized --cross-file mingw32.cross build_win
+          meson setup -Dbuildtype=release -Db_lto=true -Db_ndebug=true --cross-file mingw32.cross build_win
           meson compile -C build_win
 
       # 9) Create minimal artifact folder (Windows)