Fix release packaging and macOS stack overflow crash

- Fix StormLib package name: libstormlib-dev → libstorm-dev (correct
  Ubuntu package name) across all CI workflows and extract_assets.sh
- Build StormLib from source on Windows CI (no MSYS2 package exists),
  ensuring asset_extract.exe is included in release archives
- Update extract_assets.sh/.ps1 to prefer pre-built asset_extract
  binary next to the script (release archives) before trying build dir
- Move ADTTerrain allocations from stack to heap in prepareTile() to
  fix stack overflow on macOS (worker threads default to 512 KB stack,
  two ADTTerrain structs ≈ 560 KB exceeded that)

.github/workflows/build.yml

@@ -55,7 +55,7 @@ jobs:
             libavutil-dev \
             libunicorn-dev \
             libx11-dev
-          sudo apt-get install -y libstormlib-dev || true
+          sudo apt-get install -y libstorm-dev || true
 
       - name: Configure
         run: cmake -S . -B build -DCMAKE_BUILD_TYPE=Release
@@ -191,9 +191,16 @@ jobs:
             mingw-w64-clang-aarch64-shaderc
             git
 
-      - name: Install optional packages
+      - name: Build StormLib from source
         shell: msys2 {0}
-        run: pacman -S --noconfirm --needed mingw-w64-clang-aarch64-stormlib || true
+        run: |
+          git clone --depth 1 https://github.com/ladislav-zezula/StormLib.git /tmp/StormLib
+          cmake -S /tmp/StormLib -B /tmp/StormLib/build -G Ninja \
+            -DCMAKE_BUILD_TYPE=Release \
+            -DCMAKE_INSTALL_PREFIX="$MINGW_PREFIX" \
+            -DBUILD_SHARED_LIBS=OFF
+          cmake --build /tmp/StormLib/build --parallel $(nproc)
+          cmake --install /tmp/StormLib/build
 
       - name: Configure
         shell: msys2 {0}
@@ -254,9 +261,16 @@ jobs:
             mingw-w64-x86_64-nsis
             git
 
-      - name: Install optional packages
+      - name: Build StormLib from source
         shell: msys2 {0}
-        run: pacman -S --noconfirm --needed mingw-w64-x86_64-stormlib || true
+        run: |
+          git clone --depth 1 https://github.com/ladislav-zezula/StormLib.git /tmp/StormLib
+          cmake -S /tmp/StormLib -B /tmp/StormLib/build -G Ninja \
+            -DCMAKE_BUILD_TYPE=Release \
+            -DCMAKE_INSTALL_PREFIX="$MINGW_PREFIX" \
+            -DBUILD_SHARED_LIBS=OFF
+          cmake --build /tmp/StormLib/build --parallel $(nproc)
+          cmake --install /tmp/StormLib/build
 
       - name: Configure
         shell: msys2 {0}