feat(v3.6.0): add iCloud sharing for workflows and tracked domains

- implement CloudKit sharing (CKShare) for TrackedDomain and DomainWorkflow
- support read-only and editable permissions
- add Share actions and shared state indicators in UI
- handle shared record ownership and participant roles
- implement deterministic conflict resolution to prevent duplication
- ensure compatibility with existing iCloud sync layer
- maintain local-first behavior with graceful offline handling
- remove debug logging for domain availability/rdap messages

notes:
- no custom backend or accounts introduced
- sharing is Apple ecosystem only (iCloud-based)
- large history data remains local-only

1 files changed, 2 insertions, 0 deletions

diff --git a/DomainDigCLI.swift b/DomainDigCLI.swift
index 8c433d8..bb9dd80 100644
--- a/DomainDigCLI.swift
+++ b/DomainDigCLI.swift
@@ -428,6 +428,8 @@ struct DomainDigCLI {
                domaindig backup export [path]
                domaindig backup import <path> [--replace]
                domaindig backup validate <path> [--json]
+        
+        note: the CLI remains local-only and does not sync with iCloud yet.
         """
     }
 }