When UpdateService encounters bind address conflicts (port already in use),
the handler now automatically deletes existing forward services and retries
the AddService operation. This resolves issues where a forward's own stale
listener prevents the update.
- Add isBindAddressInUseError() to detect port bind conflicts
- Add rebindForwardServiceOnSelfOccupiedPort() for automatic cleanup and retry
- Add HasOtherForwardOnNodePort() repository method to verify port ownership
- Add unit tests for bind conflict detection
- Add replaceForwardPortsPreservingInIP to maintain existing InIP values
- Track inIpTouched state in frontend to distinguish user changes
- Only send inIp in update request when user explicitly changed it
- Add unit tests for forward port replacement with preserved InIP
- Support optional listen_port field for automatic port assignment
- Add alias field mapping (dest/dst/target, listenPort/port, name/forward_name)
- Update help text to document auto port assignment
- Add parser tests for alias fields and missing port handling
Entire-Checkpoint: efae74a1f03c
- Pass connectIp through resolveChainProbeTarget in diagnosis stream start items
- Pass connectIp in appendChainHopDiagnosis for full chain probes
- Reconstruct tunnel state with connectIp field preserved
- Fix forward service config when bindIP already contains port
- Add contract tests for connectIp diagnosis scenarios
- Add unit test for bindIP with port in buildForwardServiceConfigs
- Update AGENTS.md with plan document rules
Entire-Checkpoint: 35a2e61c2431
sagitchu