feat: enable TradingView drawing toolbar + add GitHub Actions workflow

- TvAdvancedChart: hide_top_toolbar false → outils de dessin visibles
- GitHub Actions: workflow fetch-rate-data.yml (cron horaire)

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

.github/workflows/fetch-rate-data.yml

@@ -0,0 +1,29 @@
+name: Fetch Rate Probabilities
+
+on:
+  schedule:
+    - cron: '0 * * * *'   # toutes les heures
+  workflow_dispatch:        # déclenchement manuel
+
+jobs:
+  fetch:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+
+      - name: Fetch rate probabilities from rateprobability.com
+        run: node .github/scripts/fetch-rate-data.mjs
+
+      - name: Commit updated data (if changed)
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+          git add data/rate-probabilities.json
+          git diff --staged --quiet || git commit -m "chore: update rate-probabilities data [skip ci]"
+          git push

components/TvChart.tsx

@@ -80,12 +80,14 @@ export function TvAdvancedChart({
         locale:               "fr",
         backgroundColor:      "rgba(8,12,20,0)",
         gridColor:            "rgba(30,45,61,0.5)",
-        hide_top_toolbar:     true,
+        hide_top_toolbar:     false,
         hide_legend:          false,
         allow_symbol_change:  false,
         calendar:             false,
         hide_volume:          true,
         isTransparent:        true,
+        save_image:           true,
+        drawings_access:      { type: "all", tools: [{ name: "Regression Trend" }] },
       },
       height
     );