Initial commit: split VNOX monorepo into VNOX-Client

Desktop client with egui + wgpu UI, audio pipeline (cpal/opus/rodio),
networking (LNEx protocol), and identity management with encrypted vault.

Jitter buffer module extracted from voice-node for standalone operation.

src/net/internal/dispatch/mod.rs

@@ -0,0 +1,53 @@
+use anyhow::Result;
+use tokio::sync::mpsc;
+use tracing::debug;
+
+use super::super::payloads::*;
+use super::super::types::*;
+
+mod channel;
+mod dm;
+mod social;
+
+pub async fn incoming(pid: u16, payload: &[u8], tx: &mpsc::Sender<NetEvent>) -> Result<()> {
+    match pid {
+        PID_CHANNEL_STATE
+        | PID_CHAT_MESSAGE
+        | PID_CHAT_HISTORY
+        | PID_USER_JOIN
+        | PID_USER_LEAVE
+        | PID_PONG
+        | PID_READ_RECEIPT_BROADCAST
+        | PID_ERROR
+        | PID_DISCONNECT
+        | PID_TYPING_START => channel::handle(pid, payload, tx).await?,
+
+        PID_DM_START
+        | PID_DM_MESSAGE
+        | PID_DM_HISTORY
+        | PID_FRIEND_LIST
+        | PID_MESSAGE_REACTION_ADD
+        | PID_MESSAGE_REACTION_REMOVE
+        | PID_MESSAGE_EDIT
+        | PID_MESSAGE_DELETE
+        | PID_FRIEND_EVENT => dm::handle(pid, payload, tx).await?,
+
+        PID_GUILD_LIST
+        | PID_GUILD_CREATE
+        | PID_GUILD_DELETE
+        | PID_GUILD_MEMBER_JOIN
+        | PID_GUILD_MEMBER_LEAVE
+        | PID_GUILD_MEMBER_KICK
+        | PID_INVITE_CREATE
+        | PID_INVITE_ACCEPT
+        | PID_INVITE_DELETE
+        | PID_ROLE_CREATE
+        | PID_ROLE_DELETE
+        | PID_USER_ROLE_UPDATE
+        | PID_PRESENCE_SYNC
+        | PID_PRESENCE_EVENT => social::handle(pid, payload, tx).await?,
+
+        other => debug!("unhandled 0x{:04X}", other),
+    }
+    Ok(())
+}