ci: add GitHub Actions workflows for daily provider and weekly benchmark data refresh

Workflows commit updated JSON back to the repo, triggering Vercel auto-redeploy.
REQUESTY_API_KEY and OPENROUTER_API_KEY must be set in repo secrets.

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

.github/workflows/update-benchmarks.yml

@@ -0,0 +1,37 @@
+name: Update benchmark data
+
+on:
+  schedule:
+    - cron: '0 4 * * 0'   # weekly, Sunday at 04:00 UTC
+  workflow_dispatch:        # allow manual trigger from GitHub Actions UI
+
+permissions:
+  contents: write
+
+jobs:
+  update:
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+          cache: 'npm'
+
+      - run: npm install
+
+      - name: Fetch all benchmark data
+        run: node scripts/fetch-benchmarks.js
+
+      - name: Commit if changed
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+          git add data/benchmarks.json
+          git diff --staged --quiet && echo "No changes." || (
+            git commit -m "chore: update benchmark data [skip ci]" &&
+            git push
+          )

.github/workflows/update-providers.yml

@@ -0,0 +1,40 @@
+name: Update provider data
+
+on:
+  schedule:
+    - cron: '0 6 * * *'   # daily at 06:00 UTC
+  workflow_dispatch:        # allow manual trigger from GitHub Actions UI
+
+permissions:
+  contents: write
+
+jobs:
+  update:
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+          cache: 'npm'
+
+      - run: npm install
+
+      - name: Fetch all provider data
+        env:
+          REQUESTY_API_KEY: ${{ secrets.REQUESTY_API_KEY }}
+          OPENROUTER_API_KEY: ${{ secrets.OPENROUTER_API_KEY }}
+        run: node scripts/fetch-providers.js
+
+      - name: Commit if changed
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+          git add data/providers.json
+          git diff --staged --quiet && echo "No changes." || (
+            git commit -m "chore: update provider data [skip ci]" &&
+            git push
+          )