Windows support: portable local server launch + clean quit, %APPDATA% data dir, Win32 libs, MinGW/MSVC build docs

README.md

@@ -56,6 +56,56 @@ ninja -C build                    # safari_client, safari_server, safari_bot
 
 Server only (no GPU needed): `cmake -S . -B build_srv -G Ninja -DBS_BUILD_CLIENT=OFF`.
 
+Built files load assets from the source checkout (`BS_ASSET_DIR` and the engine's asset path are
+baked in at configure time), so run them where they were built.
+
+### Windows (MSYS2, recommended)
+
+Install [MSYS2](https://www.msys2.org/) and open the **MSYS2 UCRT64** shell:
+
+```sh
+pacman -S --needed git mingw-w64-ucrt-x86_64-{gcc,cmake,ninja,pkgconf,glfw,glm,libepoxy,sqlite3,nlohmann-json}
+
+git clone ssh://git@git.gabjimmy.com:30009/Gabe/Vibe-HD-2D.git
+git clone <this repo> Brandling-Safari          # side by side with Vibe-HD-2D
+cd Brandling-Safari
+cmake -S . -B build -G Ninja
+ninja -C build                                  # safari_client.exe, safari_server.exe, safari_bot.exe
+./build/safari_client.exe
+```
+
+The executables find `glfw3.dll`, `libepoxy-0.dll`, `libsqlite3-0.dll` and
+`libwinpthread-1.dll` on the UCRT64 shell's `PATH`. To start the game from Explorer or a shortcut,
+copy them next to the executables once:
+
+```sh
+ldd build/safari_client.exe build/safari_server.exe | grep -i /ucrt64/ | awk '{print $3}' | sort -u | xargs -I{} cp {} build/
+```
+
+### Windows (Visual Studio + vcpkg)
+
+In an **x64 Native Tools Command Prompt for VS 2022**:
+
+```bat
+git clone https://github.com/microsoft/vcpkg C:\vcpkg && C:\vcpkg\bootstrap-vcpkg.bat
+C:\vcpkg\vcpkg install glfw3 glm libepoxy sqlite3 nlohmann-json --triplet x64-windows
+
+cmake -S . -B build -G Ninja -DCMAKE_BUILD_TYPE=RelWithDebInfo ^
+      -DCMAKE_TOOLCHAIN_FILE=C:/vcpkg/scripts/buildsystems/vcpkg.cmake
+cmake --build build
+build\safari_client.exe
+```
+
+vcpkg copies the DLLs next to the executables. The MinGW build is verified (zero warnings);
+the MSVC build has not been compiled yet, so expect possible small fixes there.
+
+Windows notes: the client has no console window. Your identity and a hosted game's `world.db`
+and `server.log` live in `%APPDATA%\brandling-safari`. The first time a server runs, allow it
+through Windows Defender Firewall on private networks so LAN players can join (UDP 27420 for the
+game, 27421 for discovery). The art tools in `tools/` work on Windows with Python 3 (`pip install
+requests pillow numpy`); only Company_Sprite_Gen's part-library generator (`pixellab_library.py`)
+is Linux/macOS-only.
+
 ## Playing
 
 ```sh