ci: add SSH secret test workflow

.gitea/workflows/test-ssh-secret.yml

@@ -0,0 +1,26 @@
+name: Test SSH Secrets
+
+on:
+  workflow_dispatch:
+
+jobs:
+  test-ssh:
+    name: Test Staging SSH
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Setup SSH key
+        shell: sh
+        run: |
+          mkdir -p ~/.ssh
+          echo "${{ secrets.STAGING_SSH_KEY }}" > ~/.ssh/staging_key
+          chmod 600 ~/.ssh/staging_key
+          echo "SSH key file created"
+
+      - name: Test SSH connection
+        shell: sh
+        run: |
+          ssh -i ~/.ssh/staging_key \
+              -o StrictHostKeyChecking=no \
+              -o ConnectTimeout=10 \
+              ${{ secrets.STAGING_SSH_USER }}@${{ secrets.STAGING_SSH_HOST }} \
+              "echo 'SSH connection successful! Host: \$(hostname)'"