chore: consolidate deploy workflow to single-job GitHub Pages model

Align with the new GitHub Actions deployment model used in speedy-bird-lynx.
Merges build and deploy into a single job, bumps Node to 22, removes
verbose step names, and updates concurrency group.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: jonathanperis

.github/workflows/deploy.yml

@@ -2,55 +2,38 @@ name: Deploy to GitHub Pages
 
 on:
   push:
-    branches: ["main"]
+    branches: [main]
   workflow_dispatch:
 
 permissions:
-  contents: read
   pages: write
   id-token: write
+  contents: read
 
 concurrency:
-  group: "pages"
+  group: github-pages
   cancel-in-progress: false
 
 jobs:
-  build:
+  deploy:
     runs-on: ubuntu-latest
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
     steps:
-      - name: Checkout
-        uses: actions/checkout@v6
-
-      - name: Setup Node
-        uses: actions/setup-node@v6
+      - uses: actions/checkout@v6
+      - uses: actions/setup-node@v6
         with:
-          node-version: "20"
+          node-version: "22"
           cache: "npm"
-
-      - name: Setup Pages
-        uses: actions/configure-pages@v6
-
-      - name: Install dependencies
-        run: npm ci
-
-      - name: Build
-        run: npm run build
+      - uses: actions/configure-pages@v6
+      - run: npm ci
+      - run: npm run build
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           NEXT_PUBLIC_GA_ID: G-35CN95481D
-
-      - name: Upload artifact
-        uses: actions/upload-pages-artifact@v4
+      - uses: actions/upload-pages-artifact@v4
         with:
           path: ./out
-
-  deploy:
-    environment:
-      name: github-pages
-      url: ${{ steps.deployment.outputs.page_url }}
-    runs-on: ubuntu-latest
-    needs: build
-    steps:
-      - name: Deploy to GitHub Pages
-        id: deployment
+      - id: deployment
         uses: actions/deploy-pages@v5