fix: include SSH key variable in destroy workflow

Pass SSH_KEY_PUBLIC in secrets.auto.tfvars so terraform destroy plan no longer prompts for required cloud-init variable.

.gitea/workflows/terraform-destroy.yml

@@ -43,6 +43,7 @@ jobs:
         run: |
           cat > secrets.auto.tfvars << EOF
           pm_api_token_secret = "${{ secrets.PM_API_TOKEN_SECRET }}"
+          SSH_KEY_PUBLIC      = "$(printf '%s' "${{ secrets.SSH_KEY_PUBLIC }}" | tr -d '\r\n')"
           EOF
           cat > backend.hcl << EOF
           bucket                      = "${{ secrets.B2_TF_BUCKET }}"