fix(dom): find active gym button by active class instead of iterating all buttons

src/dom.js

@@ -8,12 +8,6 @@
  * scraper targets Torn's actual structure rather than guessing at selectors.
  */
 const KNOWN_ATTRS = ['strength', 'defense', 'speed', 'dexterity', 'endurance', 'intelligence'];
-const KNOWN_GYMS = [
-  'Total Bastion', 'Frontline Fitness', 'Premier Fitness', 'Average Joes',
-  "Woody's Workout Club", "Baldr's Gym", 'Sportscience Laboratory',
-  'Chrome Gym', "Mr. Miyagi's", 'Power House', 'Gym 300', 'Gym 400', 'Gym 500', 'Gym 600',
-  'Elite Gym', "David's Gym",
-];
 
 export function currentAttribute() {
   const li = findActiveAttributeLi();
@@ -66,16 +60,15 @@ function extractValueFromLi(li) {
 }
 
 function findGymName() {
-  // Gym names live in aria-labels of <button class="gymButton___HASH">.
-  const buttons = document.querySelectorAll('button[class*="gymButton"]');
-  for (const btn of buttons) {
-    const label = btn.getAttribute('aria-label') || '';
-    for (const name of KNOWN_GYMS) {
-      // aria-label format: "Gym Name. Membership cost - $X. ..."
-      if (label === name || label.startsWith(name + '.') || label.startsWith(name + ' ')) {
-        return name;
-      }
-    }
+  // Find the currently selected gym button. It has the "active" class.
+  const activeBtn = document.querySelector('button[class*="gymButton"][class*="active"]');
+  if (activeBtn) {
+    const label = activeBtn.getAttribute('aria-label') || '';
+    // aria-label format: "<Gym Name>. Membership cost - $X. Energy usage - N per train."
+    // The gym name is everything before the first ". ".
+    const dot = label.indexOf('. ');
+    if (dot !== -1) return label.slice(0, dot);
+    return label; // no period, return whole label as fallback
   }
   return null;
 }