ci: add chipStar presubmit on self-hosted runners

.ci/exclude.txt

@@ -0,0 +1,2 @@
+# CTest exclude patterns. Each entry links to an upstream issue.
+# Fix the test, then remove the entry.

.github/workflows/presubmit.yml

@@ -0,0 +1,56 @@
+name: Presubmit
+
+on:
+  pull_request:
+    paths-ignore: "docs/**"
+  push:
+    branches: [main]
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  meatloaf-x64-intel:
+    runs-on: [self-hosted, Linux, X64]
+    env:
+      CHIP_MODULE_CACHE_DIR: ""
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
+          fetch-depth: 1
+      - name: Build and test
+        shell: bash
+        run: |
+          set -e
+          if [ -f "$HOME/.local/init/bash" ]; then
+            export MODULESHOME=$HOME/.local
+            source "$MODULESHOME/init/bash"
+          elif [ -f /etc/profile.d/lmod.sh ]; then
+            source /etc/profile.d/lmod.sh
+          else
+            source /etc/profile.d/modules.sh
+          fi
+          module use /space/pvelesko/modulefiles
+          module load oneapi/2025.0.4 llvm/22.0-native HIP/chipStar/main level-zero/dgpu HIP/rocPRIM/2026.04.08 HIP/hipCUB/2026.04.08 HIP/rocThrust/2026.04.08
+          module list
+          rm -rf ~/.cache/chipStar build
+          cmake -S . -B build \
+            -DCMAKE_CXX_COMPILER="$(which hipcc)" \
+            -DCMAKE_BUILD_TYPE=Release \
+            -DBUILD_TESTS=ON -DBUILD_BENCHMARKS=OFF \
+            -DAMDGPU_TEST_TARGETS="" \
+            -DCMAKE_POLICY_VERSION_MINIMUM=3.5
+          cmake --build build -j 8
+          if [ -f .ci/exclude.txt ]; then
+            exclude=$(grep -Ev '^\s*(#|$)' .ci/exclude.txt | paste -sd '|' - || true)
+          fi
+          cd build
+          ctest --output-on-failure --timeout 300 ${exclude:+-E "$exclude"}
+      - uses: actions/upload-artifact@v4
+        if: failure()
+        with:
+          name: ctest-logs-meatloaf
+          path: build/Testing/**/LastTest*.log
+          if-no-files-found: ignore