feat(ts-sdk): refresh AWiki profiles and unread summaries

[Howe829]

Summary

• hydrate and persist WNS display names
• add display-name updates and peer resolution
• project unread counts and latest-message previews for direct and group conversations
• add mark-conversation-read support

Validation

• focused AWiki IM tests: 23/23 passed
• TypeScript typecheck passed
• ESM, CJS, and declaration build passed
• full suite: 67/68 passed; the unrelated Python HTTP example failed locally while the WNS and AWiki IM suites passed