fix: switch Pages deploy to actions/upload-pages-artifact

Replaced commit-to-docs approach with proper GitHub Pages artifact
upload. Avoids Jekyll processing, no docs/ dir needed in repo, and
sets build_type=workflow in Pages settings.

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

Author: sirdeggen

.github/workflows/deploy.yml

@@ -5,10 +5,16 @@ on:
     branches: [main]
 
 permissions:
-  contents: write
+  contents: read
+  pages: write
+  id-token: write
+
+concurrency:
+  group: pages
+  cancel-in-progress: true
 
 jobs:
-  build-and-deploy:
+  build:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
@@ -24,15 +30,18 @@ jobs:
       - name: Build
         run: npm run build
 
-      - name: Move build to docs/
-        run: |
-          rm -rf docs
-          mv dist docs
-
-      - name: Commit and push docs/
-        run: |
-          git config user.name "github-actions[bot]"
-          git config user.email "github-actions[bot]@users.noreply.github.com"
-          git add docs/
-          git diff --staged --quiet || git commit -m "chore: deploy to docs/ [skip ci]"
-          git push
+      - name: Upload Pages artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: ./dist
+
+  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