feat(#2050): set matrix avatar in the daemon over the live client

hive-matrix-mcp/src/main.rs

@@ -196,6 +196,10 @@ async fn bring_up_account(
         client::build_and_restore(&homeserver, &cfg.token_file, &cfg.state_dir, is_primary)
             .await
             .with_context(|| format!("build matrix client for account {}", cfg.name))?;
+    // Best-effort: sync the agent icon to this account's matrix avatar over
+    // the live (authenticated, correct-homeserver) Client. Replaces the old
+    // curl oneshot; failures are swallowed inside sync_avatar.
+    client::sync_avatar(&client, &cfg.state_dir, &cfg.name).await;
     timeline::install_message_handler(&client, hyperhive_socket.to_path_buf(), tag.clone());
 
     let sync_client = client.clone();