chore: import upstream snapshot with attribution

.github/workflows/ci.yml

@@ -0,0 +1,119 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  test:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+        go-version: ['1.26']
+    steps:
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+
+      - uses: actions/setup-go@924ae3a1cded613372ab5595356fb5720e22ba16 # v6
+        with:
+          go-version-file: go.mod
+
+      - name: Build
+        run: go build -o gortex ./cmd/gortex/
+
+      - name: Test
+        run: go test -race -timeout=20m -coverprofile=coverage.out ./...
+
+      - name: Upload coverage
+        if: matrix.os == 'ubuntu-latest' && matrix.go-version == '1.26'
+        uses: codecov/codecov-action@fb8b3582c8e4def4969c97caa2f19720cb33a72f # v6
+        with:
+          files: coverage.out
+        continue-on-error: true
+
+  build-windows:
+    # CGO build smoke-test on native Windows. tree-sitter needs a C/C++
+    # compiler — the GitHub windows runner ships mingw-w64 on PATH, so no
+    # extra toolchain setup is required. Build-only: `go build ./...`
+    # compiles every production package without pulling in the
+    # platform-specific test files a full `go test` would.
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+
+      - uses: actions/setup-go@924ae3a1cded613372ab5595356fb5720e22ba16 # v6
+        with:
+          go-version-file: go.mod
+
+      - name: Build CLI
+        run: go build -o gortex.exe ./cmd/gortex/
+
+      - name: Build all packages
+        run: go build ./...
+
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+
+      - uses: actions/setup-go@924ae3a1cded613372ab5595356fb5720e22ba16 # v6
+        with:
+          go-version-file: go.mod
+
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@ba0d7d2ec06a0ea1cb5fa41b2e4a3ab91d21278a # v9
+        with:
+          version: v2.11.4
+          args: --timeout=10m
+
+  build-onnx:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+
+      - uses: actions/setup-go@924ae3a1cded613372ab5595356fb5720e22ba16 # v6
+        with:
+          go-version-file: go.mod
+
+      - name: Install ONNX Runtime
+        run: |
+          wget -q https://github.com/microsoft/onnxruntime/releases/download/v1.24.4/onnxruntime-linux-x64-1.24.4.tgz
+          tar xzf onnxruntime-linux-x64-1.24.4.tgz
+          sudo cp onnxruntime-linux-x64-1.24.4/lib/libonnxruntime.so* /usr/local/lib/
+          sudo ldconfig
+
+      - name: Build with ONNX tag
+        run: go build -tags embeddings_onnx -o gortex-onnx ./cmd/gortex/
+
+      - name: Build default (Hugot bundled — no tag)
+        run: go build -o gortex-default ./cmd/gortex/
+
+      - name: Install rust tokenizers library
+        # hugot's XLA session uses the rust tokenizer, statically linked as
+        # -ltokenizers, so the embeddings_gomlx XLA build needs libtokenizers.a
+        # on the linker path. (The pure-Go default and the ONNX build do not.)
+        run: |
+          curl -fsSL https://github.com/daulet/tokenizers/releases/download/v1.27.0/libtokenizers.linux-amd64.tar.gz | tar -xz
+          sudo cp libtokenizers.a /usr/lib/
+          sudo cp libtokenizers.a /usr/local/lib/
+
+      - name: Build with GoMLX + XLA tags
+        run: go build -tags "embeddings_gomlx XLA" -o gortex-gomlx ./cmd/gortex/
+
+      - name: Build with GoMLX tag only (compat — some docs/scripts still pass it alone)
+        run: go build -tags embeddings_gomlx -o gortex-gomlx-noxla ./cmd/gortex/
+
+  benchmark:
+    runs-on: ubuntu-latest
+    if: github.event_name == 'pull_request'
+    steps:
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+
+      - uses: actions/setup-go@924ae3a1cded613372ab5595356fb5720e22ba16 # v6
+        with:
+          go-version-file: go.mod
+
+      - name: Run benchmarks
+        run: go test -bench=. -benchmem -count=1 -benchtime=1s -timeout=20m ./internal/parser/languages/ ./internal/query/ ./internal/graph/