fix: built base emsdk and other tool fixes

.github/workflows/ci.yml

@@ -13,9 +13,6 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
-  # ---------------------------------------------------------------------------
-  # Static checks: Rule R2 boundary + formatting. Fast, gates the build matrix.
-  # ---------------------------------------------------------------------------
   lint:
     runs-on: ubuntu-latest
     steps:
@@ -24,9 +21,6 @@ jobs:
       - name: Rule R2 — PDFium boundary check
         run: bash scripts/check_pdfium_boundary.sh
 
-      # Pinned so CI matches the version the tree was formatted with — clang-format
-      # output drifts between releases, and an unpinned runner version would cause
-      # spurious lint failures.
       - name: Install clang-format (pinned)
         run: pipx install clang-format==22.1.5
 
@@ -36,9 +30,6 @@ jobs:
           find engine \( -name '*.cpp' -o -name '*.cc' -o -name '*.h' -o -name '*.hpp' \) \
             -print0 | xargs -0 clang-format --dry-run --Werror
 
-  # ---------------------------------------------------------------------------
-  # Build + test on all three platforms (Gate G0: compiles clean everywhere).
-  # ---------------------------------------------------------------------------
   build:
     needs: lint
     strategy:
@@ -66,15 +57,10 @@ jobs:
         if: runner.os == 'Windows'
         uses: ilammy/msvc-dev-cmd@v1
 
-      # GitHub-hosted runners ship vcpkg preinstalled. VCPKG_INSTALLATION_ROOT is
-      # a runner OS env var, so it must be promoted to GITHUB_ENV here — it is
-      # NOT visible via the ${{ env.* }} context in a job-level env: block.
       - name: Locate vcpkg
         shell: bash
         run: |
           echo "VCPKG_ROOT=$VCPKG_INSTALLATION_ROOT" >> "$GITHUB_ENV"
-          # The runner's preinstalled vcpkg may predate our pinned builtin-baseline;
-          # fetch so manifest resolution can find that commit's versions tree.
           git -C "$VCPKG_INSTALLATION_ROOT" fetch --quiet origin || true
 
       - name: Create vcpkg binary cache dir
@@ -88,9 +74,6 @@ jobs:
           key: vcpkg-${{ matrix.os }}-${{ hashFiles('vcpkg.json') }}
           restore-keys: vcpkg-${{ matrix.os }}-
 
-      # vcpkg.json ships without a builtin-baseline; the local bootstrap script
-      # normally pins it. In CI we pin it on the fly (idempotent) so the
-      # CMakeLists dependency-pinning guard is satisfied.
       - name: Pin vcpkg dependency baseline
         shell: bash
         run: |
@@ -106,3 +89,74 @@ jobs:
 
       - name: Test
         run: ctest --preset ${{ matrix.preset }}
+
+  gateway:
+    needs: lint
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: gateway
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.11"
+          cache: pip
+          cache-dependency-path: gateway/pyproject.toml
+
+      - name: Install gateway (editable, with dev extras)
+        run: |
+          python -m pip install --upgrade pip
+          python -m pip install -e ".[dev]"
+
+      - name: Ruff — lint
+        run: python -m ruff check .
+
+      - name: Ruff — format check
+        run: python -m ruff format --check .
+
+      - name: Pytest
+        run: python -m pytest
+
+
+  wasm:
+    needs: lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Read pinned emsdk version
+        id: emsdk-version
+        run: |
+          version=$(grep '^EMSDK_VERSION=' wasm/emsdk.pinned | cut -d= -f2)
+          if [ -z "$version" ]; then
+            echo "::error::EMSDK_VERSION not found in wasm/emsdk.pinned"
+            exit 1
+          fi
+          echo "version=$version" >> "$GITHUB_OUTPUT"
+
+      - name: Install Ninja
+        uses: seanmiddleditch/gha-setup-ninja@v5
+
+      - name: Set up Emscripten ${{ steps.emsdk-version.outputs.version }}
+        uses: mymindstorm/setup-emsdk@v14
+        with:
+          version: ${{ steps.emsdk-version.outputs.version }}
+          actions-cache-folder: emsdk-cache-${{ steps.emsdk-version.outputs.version }}
+
+      - name: Set up Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: "20"
+
+      - name: Configure (WASM)
+
+        run: cmake --preset wasm
+
+      - name: Build
+        run: cmake --build --preset wasm
+
+      - name: Smoke test
+        run: node wasm/hello.test.mjs