deploy.yml

name: Deploy docs to GitHub Pages

# Build the Zensical site and publish it to GitHub Pages on every push to the
# default branch (and on manual dispatch). Uses the GitHub Actions Pages flow
# (Settings → Pages → Source: GitHub Actions), so no gh-pages branch is needed.

on:
  push:
    branches: [main]
  workflow_dispatch:

# Least privilege needed for the Pages deployment.
permissions:
  contents: read
  pages: write
  id-token: write

# Allow one concurrent deployment; let an in-progress run finish rather than
# cancelling it (avoids a half-published site).
concurrency:
  group: pages
  cancel-in-progress: false

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-python@v5
        with:
          python-version: "3.13"

      # Zensical is pre-1.0 — pin it (keep in sync with build/preview.sh and
      # .claude/skills/manage-docs-site/scripts/build.sh).
      - name: Install Zensical
        run: pip install zensical==0.0.45

      # --strict fails the build on broken links / unresolved references, so a
      # regression is caught here instead of being published. Outputs to public/
      # (the site_dir set in zensical.toml).
      - name: Build (strict)
        run: zensical build --strict

      # Custom domain — written into the published output on every deploy so the
      # Pages custom-domain setting can't drift. Must match site_url in zensical.toml.
      - name: Set custom domain (CNAME)
        run: echo "docs.computestacks.com" > public/CNAME

      - name: Upload Pages artifact
        uses: actions/upload-pages-artifact@v3
        with:
          path: public

  deploy:
    needs: build
    runs-on: ubuntu-latest
    environment:
      name: github-pages
      url: ${{ steps.deployment.outputs.page_url }}
    steps:
      - name: Deploy to GitHub Pages
        id: deployment
        uses: actions/deploy-pages@v4