Enhance money history logging: Implement best-effort insert into money_history for UI visibility across BaseWorker, EventsWorker, and UndergroundWorker, improving tracking of monetary changes.

src/worker/underground.rs

@@ -962,6 +962,24 @@ fn change_falukant_user_money(
     let p2: &(dyn ToSql + Sync) = &money_change;
     let p3: &(dyn ToSql + Sync) = &action;
     conn.execute("ug_update_money", &[p1, p2, p3])?;
+
+    // Best-effort insert into money_history for UI visibility
+    let money_str = format!("{:.2}", money_change);
+    fn escape_sql_literal(s: &str) -> String { s.replace('\'', "''") }
+    let escaped_action = escape_sql_literal(action);
+    let history_sql = format!(
+        "INSERT INTO falukant_log.money_history (user_id, change, action, created_at) VALUES ({uid}, {money}::numeric, '{act}', NOW());",
+        uid = falukant_user_id,
+        money = money_str,
+        act = escaped_action
+    );
+    if let Err(err) = conn.query(&history_sql) {
+        eprintln!(
+            "[UndergroundWorker] Warning: inserting money_history failed for user {}: {}",
+            falukant_user_id, err
+        );
+    }
+
     Ok(())
 }