Fix Friends & Social member search; purge all account data on deletion

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DjMbLQujBHunCCu5GpsHaT

launcher/src-tauri/src/commands.rs

@@ -994,10 +994,12 @@ pub async fn remove_friend(state: State<'_, AppState>, friend_uuid: Option<Strin
 
 #[tauri::command]
 pub async fn search_members(state: State<'_, AppState>, query: String) -> Res<Vec<MemberProfile>> {
-    let req = account_api(&state, reqwest::Method::GET, &format!("/social/members?q={query}")).await?;
-    let resp = req.send().await.map_err(err)?;
+    let req = account_api(&state, reqwest::Method::GET, "/social/members").await?;
+    // `.query` percent-encodes, so names with spaces, `&` or `#` search correctly.
+    let resp = req.query(&[("q", query.trim())]).send().await.map_err(err)?;
     if !resp.status().is_success() {
-        return Err("unable to search members".into());
+        let body: serde_json::Value = resp.json().await.unwrap_or_default();
+        return Err(body["error"].as_str().unwrap_or("unable to search members").to_string());
     }
     resp.json().await.map_err(err)
 }