Add host-owned chat creation, model discovery, messaging, reading, and waiting with durable delivery receipts. Keep tool presentation compact, mark agent-authored messages, and prevent edits that would remove tool activity.
Adopt the signed AgentKit 0.16.0 release in the package requirement, resolved revision, and submodule.
Share Vault, persistence, SSH/SFTP, forwarding, and SwiftUI components across platforms. Add mobile editors, terminal input, standalone Assistant, Metrics navigation, transfers, and a unified Live Activity with host system icons.
Validation: 35 iOS tests and 100 focused macOS tests pass; formatting and zh-Hans checks pass. The full macOS run reports 14 issues in the documented timing, Keychain, and popover suites. Remaining Assistant tool and CloudKit work is tracked in Memory/MOBILE_ROLLOUT.md.