holdings: a member of a Space publishes what they hold as room-salted album keys, sealed to the room, so "who has this" is answered while they are offline

src-tauri/src/slsk_link.rs

@@ -293,6 +293,12 @@ pub(crate) fn remember(app: &tauri::AppHandle, link: KnownLink) {
 
 /// The Soulseek account a verified persona key belongs to, if this device
 /// verified one (our own included).
+/// The Soulseek name this device has VERIFIED as its own through the link
+/// handshake, if any — not merely the account signed in right now.
+pub(crate) fn own_linked_username(app: &tauri::AppHandle) -> Option<String> {
+    load(app).own.map(|o| o.username)
+}
+
 pub(crate) fn username_for_key(app: &tauri::AppHandle, persona_key: &str) -> Option<String> {
     let links = load(app);
     if let Some(o) = &links.own {