Fix sync job: use smart cache lookup instead of submodule scripts

- Replace .haf_app_fetch_haf_cache with .haf_app_smart_cache_lookup
  (extracts directly to job dir with permissions fixed)
- Replace .haf_app_copy_blockchain/.haf_app_copy_datadir with inline scripts
  (these templates referenced haf/scripts/copy_datadir.sh from submodule)
- Add cache hit detection to skip wait when app already synced
- Use .haf_app_sync_save_cache_conditional for smarter cache saves
- Increase timeout to 2 hours for NFS cache push