Add personal site with blog and GitHub Pages workflow

.github/workflows/pages.yml

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+name: Publish site
+
+# Builds the static site and publishes it to GitHub Pages.
+# Pull requests run the checks only; pushes to main also deploy.
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+# One deployment at a time; let an in-flight deploy finish rather than cancel it.
+concurrency:
+  group: pages
+  cancel-in-progress: false
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    steps:
+      - name: Check out
+        uses: actions/checkout@v4
+
+      - name: Validate links, alt text, and titles
+        run: python3 scripts/check-site.py
+
+      - name: Assemble site
+        run: |
+          mkdir _site
+          cp index.html 404.html robots.txt .nojekyll _site/
+          cp -r assets blog _site/
+          find _site -type f | sort
+
+      - name: Configure Pages
+        if: github.event_name != 'pull_request'
+        uses: actions/configure-pages@v5
+
+      - name: Upload artifact
+        if: github.event_name != 'pull_request'
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: _site
+
+  deploy:
+    if: github.event_name != 'pull_request'
+    needs: build
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    permissions:
+      pages: write
+      id-token: write
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4

.gitignore

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+# Source material, not part of the published site (the bio contains a birthday)
+Michael Vance.md
+michael-vance-builder-pixel-art.jpg
+.remember/
+_site/
+.DS_Store

404.html

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+<!doctype html>
+<html lang="en">
+<head>
+  <meta charset="utf-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+  <title>Page not found | Michael Vance</title>
+  <meta name="robots" content="noindex">
+  <link rel="icon" href="/assets/favicon.svg" type="image/svg+xml">
+  <style>
+    body{margin:0;min-height:100vh;display:grid;place-items:center;background:#f3ebdb;color:#2b2118;font-family:Georgia,serif;text-align:center;padding:1rem}
+    h1{font-size:clamp(2.2rem,6vw,3.5rem);margin:.2rem 0}
+    code{font-family:ui-monospace,Menlo,monospace;background:#f0b81f;padding:.1em .4em;border:2px solid #2b2118;border-radius:4px}
+    a{color:#1d3b63;font-weight:700}
+    @media (prefers-color-scheme:dark){body{background:#101c2e;color:#efe6d3}a{color:#8fb6ee}}
+  </style>
+</head>
+<body>
+  <main>
+    <p><code>ERR 404</code></p>
+    <h1>Measured twice, cut once. This page isn't here.</h1>
+    <p>The board you were looking for was never milled.</p>
+    <p><a id="home" href="/">Back to the workbench</a></p>
+    <script>
+      // This is a project site served from /michaelvance0092.github.io/, so root-relative links need that prefix.
+      (function () {
+        var base = location.pathname.indexOf('/michaelvance0092.github.io/') === 0 ? '/michaelvance0092.github.io/' : '/';
+        document.getElementById('home').href = base;
+        document.querySelector('link[rel=icon]').href = base + 'assets/favicon.svg';
+      })();
+    </script>
+  </main>
+</body>
+</html>