style: format all CUDA source files with clang-format-17 #15

	# Continuous Integration
	# Validates code formatting and CUDA compilation

	name: CI

	on:
	push:
	branches: [main, master]
	pull_request:
	branches: [main, master]
	workflow_dispatch:

	permissions:
	contents: read

	concurrency:
	group: ci-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	format-check:
	name: Format Check
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v4

	- name: Check formatting
	uses: jidicula/clang-format-action@v4.13.0
	with:
	clang-format-version: '17'
	check-path: '.'
	exclude-regex: '(^\|/)(build\|third_party\|external\|vendor\|\.git\|\.kiro)(/\|$)'
	fallback-style: 'LLVM'

	cuda-build:
	name: CUDA Build
	runs-on: ubuntu-latest
	container:
	image: nvidia/cuda:12.4.1-devel-ubuntu22.04
	steps:
	- name: Install dependencies
	run: apt-get update && apt-get install -y cmake git build-essential

	- name: Checkout
	uses: actions/checkout@v4

	- name: Configure
	run: cmake -S . -B build -DCMAKE_BUILD_TYPE=Release -DBUILD_TESTS=OFF -DCMAKE_CUDA_ARCHITECTURES="70;75;80;86;89;90"

	- name: Build
	run: cmake --build build --target sgemm_benchmark -j2 --verbose

	- name: Info
	run: \|
	echo "✅ CUDA compilation successful"
	echo "ℹ️ GPU runtime tests require a CUDA-capable machine"

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