tauri-runtime-servocat 3.15.0

Servo-replacement runtime for Tauri: wires html-cat, css-cat, dom-cat, layout-cat, paint-cat, net-cat, boa-cat, ecma-runtime-cat, and web-api-cat into a single rendering + scripting pipeline. v3.15.0 closes the async arc end-to-end: bumps to boa-cat 0.6 (Promise type + microtask driver + `await` evaluator) + ecma-runtime-cat 0.3 (`Promise.{resolve,reject,all,race}` global) + web-api-cat 0.5, and proves the wiring with an end-to-end test that has a `HostCommands` callback return a `Value::Promise` and a JS script `await invoke('cmd', ...)` to unwrap it. The existing `NativeFn` host-command surface is unchanged -- promises returned from commands now compose naturally with `.then` / `await` / `Promise.all` through the engine's dispatch path.
name: Docs

on:
  push:
    branches: [main]
  workflow_dispatch:

permissions:
  contents: read
  pages: write
  id-token: write

concurrency:
  group: pages
  cancel-in-progress: false

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: dtolnay/rust-toolchain@stable
      - run: cargo doc --no-deps --all-features
      - run: echo '<meta http-equiv="refresh" content="0; url=tauri_runtime_servocat/index.html">' > target/doc/index.html
      - uses: actions/upload-pages-artifact@v3
        with:
          path: target/doc
  deploy:
    needs: build
    runs-on: ubuntu-latest
    environment:
      name: github-pages
      url: ${{ steps.deployment.outputs.page_url }}
    steps:
      - id: deployment
        uses: actions/deploy-pages@v4