deleteMessage, prepareMessage noSend, streamMessageDeletions (libxmtp 1.9.0 updates)

[cameronvoell]

Add Client.sendSyncRequest(), extend message preparation with noSend, implement Conversations.streamMessageDeletions(), and upgrade native SDKs to libxmtp 1.9.0 across iOS (XMTP 4.9.0) and Android (org.xmtp:android 4.9.0)

Introduce manual device sync via Client.sendSyncRequest(), support deferred publishing with Conversation.prepareMessage(..., noSend), add real-time deletion streaming with Conversations.streamMessageDeletions(), implement enriched message decoding/serialization (DecodedMessageV2) and deletion/leave-request codecs, expose publish/delete/enriched messages APIs, and pass appData through group creation; bump native dependencies to XMTP 4.9.0.

📍Where to Start

Start with the deletion streaming flow at Conversations.streamMessageDeletions in Conversations.ts, then review the platform handlers in XMTPModule.swift and XMTPModule.kt.

---

Macroscope summarized 271c9d1.

[changeset-bot]

⚠️ No Changeset found

Latest commit: 271c9d1

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR