docs: same reason as prev commit

Author: qiekn

notes/src/README.md

@@ -5,9 +5,9 @@ Personal notes from following the [Vulkan Tutorial](https://docs.vulkan.org/tuto
 ## Environment
 
 - **Platform**: Windows (MSYS2 UCRT64)
-- **Compiler**: Clang (C++20 with Modules)
-- **Build system**: CMake + Ninja
-- **Vulkan SDK**: 1.4
+- **Compiler**: Clang 21 (C++23 Modules & libc++)
+- **Build system**: CMake 3.30+ / Ninja
+- **Vulkan SDK**: 1.4.341.1 (via `find_package(Vulkan)`, using Vulkan-Hpp C++ Module)
 
 ## Dependencies
 
@@ -21,6 +21,8 @@ All third-party libraries are managed as git submodules under `deps/`.
 
 ## Quick Start
 
+Download and install [Vulkan SDK](https://vulkan.lunarg.com/sdk/home) first, then:
+
 ```bash
 git clone --recurse-submodules https://github.com/qiekn/vulkan
 cd vulkan
@@ -30,5 +32,5 @@ cmake -B build -G Ninja \
   -DCMAKE_CXX_COMPILER=clang++
 
 cmake --build build
-./build/main
+./build/vulkan
 ```

notes/src/dev-environment.md

@@ -2,7 +2,7 @@
 
 ## Vulkan SDK
 
-Download and install [Vulkan SDK 1.4+](https://vulkan.lunarg.com/sdk/home).
+Download and install [Vulkan SDK 1.4+](https://vulkan.lunarg.com/sdk/home). Make sure the `VULKAN_SDK` environment variable is set — CMake uses `find_package(Vulkan)` to locate it.
 
 ## Toolchain (MSYS2 UCRT64)
 
@@ -35,7 +35,7 @@ This generates `compile_commands.json` for clangd.
 
 ```bash
 cmake --build build -j$(nproc)
-./build/main
+./build/vulkan
 ```
 
 Or use the shortcut: