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, 14 insertions, 0 deletions

diff --git a/DomainDig/DomainDig.entitlements b/DomainDig/DomainDig.entitlements
new file mode 100644
index 0000000..d792729
--- /dev/null
+++ b/DomainDig/DomainDig.entitlements
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+    <key>com.apple.developer.icloud-container-identifiers</key>
+    <array>
+        <string>iCloud.net.cleberg.DomainDig</string>
+    </array>
+    <key>com.apple.developer.icloud-services</key>
+    <array>
+        <string>CloudKit</string>
+    </array>
+</dict>
+</plist>