Add comma-separated and regex pattern support for set filtering

client/db/index.jsx

@@ -305,7 +305,7 @@ function QueryForm () {
             <input type='number' className='form-control' id='max-return-length' placeholder='# to Display' value={maxReturnLength} onChange={event => { setMaxReturnLength(event.target.value); }} />
           </div>
           <div className='input-group col-12 col-xl-6 mb-2'>
-            <input type='text' className='form-control' id='set-name' placeholder='Set Name' list='set-list' value={setName} onChange={event => { setSetName(event.target.value); }} />
+            <input type='text' className='form-control' id='set-name' placeholder='Set Name (supports regex, commas)' list='set-list' value={setName} onChange={event => { setSetName(event.target.value); }} />
             <datalist id='set-list' />
             <button type='button' className='btn btn-danger' id='category-select-button' data-bs-toggle='modal' data-bs-target='#category-modal'>Categories</button>
           </div>

database/qbreader/get-query.js

@@ -272,7 +272,13 @@ function buildQueryAggregation ({ query, difficulties, categories, subcategories
   }
 
   if (setName) {
-    query['set.name'] = setName;
+    // setName is now an array after being split by commas
+    if (Array.isArray(setName)) {
+      query['set.name'] = { $in: setName.map(name => new RegExp(name, 'i')) };
+    } else {
+      // Backward compatibility: if setName is a string (shouldn't happen after API route change)
+      query['set.name'] = { $regex: setName, $options: 'i' };
+    }
   }
 
   if (minYear && maxYear) {

routes/api/query.js

@@ -38,6 +38,10 @@ router.get('/', async (req, res) => {
     req.query.subcategories = req.query.subcategories.split(',');
   }
 
+  if (req.query.setName) {
+    req.query.setName = req.query.setName.split(',').map(s => s.trim());
+  }
+
   if (!req.query.tossupPagination) {
     req.query.tossupPagination = 1;
   }