Fix Windows build process and add Windows asset extraction scripts

- Add missing MSYS2 packages to CI: vulkan-loader, vulkan-headers,
  shaderc, stormlib (both x86-64 and arm64), unicorn (arm64)
- Make vulkan-1.dll copy conditional via find_file (fixes MSYS2 builds)
- Use find_library for wininet/bz2 in asset_extract (graceful fallback)
- Add extract_assets.ps1 and extract_assets.bat for Windows users
- Expand BUILD_INSTRUCTIONS.md with MSYS2, vcpkg, and macOS sections
- Update README.md to reference Windows scripts and platforms

BUILD_INSTRUCTIONS.md

@@ -49,15 +49,104 @@ cmake -S . -B build -DCMAKE_BUILD_TYPE=Release
 cmake --build build -j"$(nproc)"
 ```
 
+### Asset Extraction (Linux)
+
+After building, extract assets from your WoW client:
+
+```bash
+./extract_assets.sh /path/to/WoW/Data wotlk
+```
+
+Supports `classic`, `tbc`, `wotlk` targets (auto-detected if omitted).
+
+---
+
+## 🍎 macOS
+
+### Install Dependencies
+
+```bash
+brew install cmake pkg-config sdl2 glew glm openssl@3 zlib ffmpeg unicorn stormlib
+```
+
+### Clone & Build
+
+```bash
+git clone --recurse-submodules https://github.com/Kelsidavis/WoWee.git
+cd WoWee
+
+BREW=$(brew --prefix)
+export PKG_CONFIG_PATH="$BREW/lib/pkgconfig:$(brew --prefix ffmpeg)/lib/pkgconfig:$(brew --prefix openssl@3)/lib/pkgconfig"
+cmake -S . -B build -DCMAKE_BUILD_TYPE=Release \
+  -DCMAKE_PREFIX_PATH="$BREW" \
+  -DOPENSSL_ROOT_DIR="$(brew --prefix openssl@3)"
+cmake --build build -j"$(sysctl -n hw.logicalcpu)"
+```
+
+### Asset Extraction (macOS)
+
+```bash
+./extract_assets.sh /path/to/WoW/Data wotlk
+```
+
+---
+
+## 🪟 Windows (MSYS2 — Recommended)
+
+MSYS2 provides all dependencies as pre-built packages.
+
+### Install MSYS2
+
+Download and install from <https://www.msys2.org/>, then open a **MINGW64** shell.
+
+### Install Dependencies
+
+```bash
+pacman -S --needed \
+  mingw-w64-x86_64-cmake \
+  mingw-w64-x86_64-gcc \
+  mingw-w64-x86_64-ninja \
+  mingw-w64-x86_64-pkgconf \
+  mingw-w64-x86_64-SDL2 \
+  mingw-w64-x86_64-glew \
+  mingw-w64-x86_64-glm \
+  mingw-w64-x86_64-openssl \
+  mingw-w64-x86_64-zlib \
+  mingw-w64-x86_64-ffmpeg \
+  mingw-w64-x86_64-unicorn \
+  mingw-w64-x86_64-vulkan-loader \
+  mingw-w64-x86_64-vulkan-headers \
+  mingw-w64-x86_64-shaderc \
+  mingw-w64-x86_64-stormlib \
+  git
+```
+
+### Clone & Build
+
+```bash
+git clone --recurse-submodules https://github.com/Kelsidavis/WoWee.git
+cd WoWee
+cmake -S . -B build -G Ninja -DCMAKE_BUILD_TYPE=Release
+cmake --build build --parallel $(nproc)
+```
+
 ---
 
 ## 🪟 Windows (Visual Studio 2022)
 
+For users who prefer Visual Studio over MSYS2.
+
 ### Install
 
-- Visual Studio 2022
-- Desktop development with C++
-- CMake tools for Windows
+- Visual Studio 2022 with **Desktop development with C++** workload
+- CMake tools for Windows (included in VS workload)
+- [LunarG Vulkan SDK](https://vulkan.lunarg.com/) (provides Vulkan headers, loader, and glslc)
+
+### vcpkg Dependencies
+
+```powershell
+vcpkg install sdl2 glew glm openssl zlib ffmpeg stormlib --triplet x64-windows
+```
 
 ### Clone
 
@@ -68,16 +157,29 @@ cd WoWee
 
 ### Build
 
-Open the folder in Visual Studio (it will detect CMake automatically)  
+Open the folder in Visual Studio (it will detect CMake automatically)
 or build from Developer PowerShell:
 
 ```powershell
-cmake -S . -B build -DCMAKE_BUILD_TYPE=Release
+cmake -S . -B build -DCMAKE_BUILD_TYPE=Release -DCMAKE_TOOLCHAIN_FILE="[vcpkg root]/scripts/buildsystems/vcpkg.cmake"
 cmake --build build --config Release
 ```
 
 ---
 
+## 🪟 Asset Extraction (Windows)
+
+After building (via either MSYS2 or Visual Studio), extract assets from your WoW client:
+
+```powershell
+.\extract_assets.ps1 "C:\Games\WoW-3.3.5a\Data"
+```
+
+Or double-click `extract_assets.bat` and provide the path when prompted.
+You can also specify an expansion: `.\extract_assets.ps1 "C:\Games\WoW\Data" wotlk`
+
+---
+
 ## ⚠️ Notes
 
 - Case matters on Linux (`WoWee` not `wowee`).