refactor(ci): use curl + retries for website build webhook

.github/workflows/website-build.yml

@@ -1,14 +1,36 @@
+name: Trigger Website Build
+
 on:
   release:
     types:
       - published
       - unpublished
       - deleted
+
+permissions:
+  contents: read
+
 jobs:
   trigger-website-build:
     runs-on: ubuntu-latest
+    timeout-minutes: 5
     steps:
-      - name: Install HTTPie
-        run: sudo snap install --edge httpie
       - name: Trigger website build
-        run: http --ignore-stdin POST ${{ secrets.PIE_WEB_VERCEL_HOOK }}
+        env:
+          WEBHOOK_URL: ${{ secrets.PIE_WEB_VERCEL_HOOK }}
+        run: |
+          set -euo pipefail
+          if [[ -z "${WEBHOOK_URL:-}" ]]; then
+            echo "::error::PIE_WEB_VERCEL_HOOK secret is not set"
+            exit 1
+          fi
+          for i in 1 2 3; do
+            if curl -fsS -X POST "${WEBHOOK_URL}"; then
+              echo "Webhook triggered successfully (attempt $i)"
+              exit 0
+            fi
+            echo "Attempt $i failed, retrying..."
+            sleep 5
+          done
+          echo "::error::Failed to trigger webhook after 3 attempts"
+          exit 1