refactor: rename universal_rebuild/ → provider/

- Rename directory
- Update all 9 devops scripts
- Update 4 generator source files
- Rebuild all binaries

devops/13_generate_yamls_clean.sh

@@ -3,7 +3,7 @@ set -euo pipefail
 
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 ROOT_DIR="${ROOT_DIR:-$(cd "${SCRIPT_DIR}/.." && pwd)}"
-PROVIDER_DIR="${ROOT_DIR}/universal_rebuild"
+PROVIDER_DIR="${ROOT_DIR}/provider"
 
 if [[ ! -d "${PROVIDER_DIR}/resources_yaml" ]]; then
   echo "Error: resources_yaml not found: ${PROVIDER_DIR}/resources_yaml" >&2