* fix: tolerate service not found during forward deletion
- Refactor deleteForwardServicesOnNode to handle not-found errors gracefully
- Extract deleteForwardServiceCandidates helper for reuse
- Add tests for not-found tolerance scenarios
- Ensures compatibility with legacy node versions
Entire-Checkpoint: a3bacf836c57
* fix: add forward port occupancy validation and runtime residual cleanup
- Add forward port occupancy validation on create/update paths
- Extend self-occupy recovery to clean residual candidate service names
- Add regression tests for address-in-use recovery with legacy runtime residue
Fixes port conflict issues when upgrading from 2.1.6 to later versions
Entire-Checkpoint: fb0a2aee4cb5
sagit