Fix Contacts TCC entitlement key: contacts -> addressbook

Confirmed root cause via tccd's own log output: the hardened-runtime
hardened-runtime prompting policy checks for
com.apple.security.personal-information.addressbook (the Contacts
framework's TCC service is still internally named kTCCServiceAddressBook,
a holdover from the old AddressBook framework), not
com.apple.security.personal-information.contacts as the entitlements
file had. With the correct key, tccd allows the prompt and access is
now granted correctly on both macOS 27 beta and 26.5.1 stable — this
was never an OS bug, notarization requirement, or beta-only issue.

Also keeps the fuller CNError domain/code/userInfo logging added while
diagnosing this, in case Contacts TCC issues resurface.

oAI/Services/ContactsService.swift

@@ -63,7 +63,8 @@ class ContactsService {
             store.requestAccess(for: .contacts) { granted, error in
                 let after = CNContactStore.authorizationStatus(for: .contacts)
                 if let error {
-                    Log.mcp.error("ContactsService.requestAccess: error=\(error.localizedDescription); granted=\(granted); status after = \(Self.describe(after)) (raw=\(after.rawValue))")
+                    let nsError = error as NSError
+                    Log.mcp.error("ContactsService.requestAccess: error=\(error.localizedDescription) domain=\(nsError.domain) code=\(nsError.code) userInfo=\(nsError.userInfo); granted=\(granted); status after = \(Self.describe(after)) (raw=\(after.rawValue))")
                 } else {
                     Log.mcp.info("ContactsService.requestAccess: granted=\(granted); status after = \(Self.describe(after)) (raw=\(after.rawValue))")
                 }