bench(zero-cache): add rm vs load benchmark harness

.github/actions/playwright-install/action.yml

@@ -0,0 +1,24 @@
+name: 'Install Playwright'
+description: 'Install Playwright browsers and system dependencies with caching. Requires node and npm dependencies to be set up before use.'
+
+runs:
+  using: 'composite'
+  steps:
+    - name: Get Playwright version
+      id: playwright-version
+      run: echo "version=$(pnpm exec playwright --version | awk '{print $NF}')" >> "$GITHUB_OUTPUT"
+      shell: bash
+    - name: Cache Playwright browsers
+      id: playwright-cache
+      uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5
+      with:
+        path: ~/.cache/ms-playwright
+        key: playwright-${{ runner.os }}-${{ runner.arch }}-${{ steps.playwright-version.outputs.version }}
+    - name: Install Playwright browsers and system deps
+      if: steps.playwright-cache.outputs.cache-hit != 'true'
+      run: pnpm exec playwright install --with-deps
+      shell: bash
+    - name: Install Playwright system deps only
+      if: steps.playwright-cache.outputs.cache-hit == 'true'
+      run: pnpm exec playwright install-deps
+      shell: bash

.github/workflows/api-snapshot.yml

@@ -0,0 +1,33 @@
+name: API Snapshot
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+  merge_group:
+
+concurrency:
+  group: '${{ github.workflow }} @ ${{ github.event.pull_request.head.label || github.head_ref || github.ref }}'
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
+permissions:
+  contents: read
+
+jobs:
+  api-snapshot:
+    name: API Snapshot
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        with:
+          persist-credentials: false
+      - uses: pnpm/action-setup@0e279bb959325dab635dd2c09392533439d90093 # v6
+      - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6
+
+        with:
+          node-version: 24.x
+          cache: 'pnpm'
+      - run: pnpm install --frozen-lockfile
+      - run: pnpm run build
+      - run: pnpm run api-snapshot