Automate the evaluation on a weekly schedule

- scripts/sync-catalog.mjs: rebuilds the Go catalogue from models.dev and benchmark
  scores from Artificial Analysis, and records what changed in snapshot.json
- scripts/build-models-md.mjs: regenerates MODELS.md from the data layers
- scripts/notify-new-models.mjs: files an issue when a new model needs a write-up
- weekly-eval.yml: cron every Monday 05:23 UTC -> refresh -> commit -> Pages deploy
- site now renders every model in the catalogue (33) with a data-snapshot stamp;
  auto-added models are flagged 'no write-up' until described
- replaced scripts/refresh-evals.mjs with the wider sync script

.gitea/workflows/weekly-eval.yml

@@ -0,0 +1,56 @@
+name: Weekly evaluation refresh
+
+on:
+  schedule:
+    # Mondays, 05:23 UTC — off the hour so it does not pile onto every other cron
+    - cron: "23 5 * * 1"
+  workflow_dispatch:
+
+permissions:
+  contents: write
+  issues: write
+
+jobs:
+  refresh:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v4
+
+      - name: Set up Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+
+      - name: Refresh catalogue and benchmark scores
+        run: node scripts/sync-catalog.mjs
+
+      - name: Rebuild MODELS.md
+        run: node scripts/build-models-md.mjs
+
+      - name: Report new models
+        env:
+          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN || gitea.token }}
+          GITHUB_API_URL: ${{ github.api_url }}
+          GITHUB_REPOSITORY: ${{ github.repository }}
+        run: node scripts/notify-new-models.mjs
+
+      - name: Commit refreshed data
+        env:
+          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN || gitea.token }}
+        run: |
+          git config user.name "opencode-go-evals"
+          git config user.email "[email protected]"
+          if git diff --quiet -- site/assets MODELS.md; then
+            echo "no data changes — nothing to commit"
+            exit 0
+          fi
+          git add site/assets MODELS.md
+          git commit -m "chore: weekly evaluation refresh $(date -u +%Y-%m-%d)"
+          # the checkout action's credentials are usually enough; fall back to the token
+          if ! git push origin HEAD:main; then
+            git remote set-url origin \
+              "https://x-access-token:${GITEA_TOKEN}@git.wallacenet.ca/devadmin/OpenCodeGoEvals.git"
+            git push origin HEAD:main
+          fi
+          echo "pushed — the Cloudflare Pages workflow will publish the update"