Add boolean filter toggle functionality

- Add TOGGLE_BOOLEAN_FILTER action to reducer
- Export toggleBooleanFilter action for reasoning filter controls
- Remove unused boolean filtering logic from modelMatchesFilters

frontend/src/pages/LeaderboardPage/components/Leaderboard/context/LeaderboardContext.js

@@ -125,24 +125,6 @@ const modelMatchesFilters = (model, filters) => {
     if (!modelName.includes(searchLower)) return false;
   }
 
-  // Boolean filters
-  if (filters.booleanFilters.length > 0) {
-    return filters.booleanFilters.every((filter) => {
-      const filterValue = typeof filter === "object" ? filter.value : filter;
-
-      // Maintainer's Highlight keeps positive logic
-      if (filterValue === "is_official_provider") {
-        return model.features[filterValue];
-      }
-
-      // For all other filters, invert the logic
-      if (filterValue === "is_not_available_on_hub") {
-        return model.features[filterValue];
-      }
-
-      return !model.features[filterValue];
-    });
-  }
 
   return true;
 };
@@ -289,6 +271,21 @@ const reducer = (state, action) => {
         },
       };
 
+    case "TOGGLE_BOOLEAN_FILTER":
+      const { filter } = action;
+      const currentFilters = state.filters.booleanFilters;
+      const newBooleanFilters = currentFilters.includes(filter)
+        ? currentFilters.filter((f) => f !== filter)
+        : [...currentFilters, filter];
+
+      return {
+        ...state,
+        filters: {
+          ...state.filters,
+          booleanFilters: newBooleanFilters,
+        },
+      };
+
     case "SET_DISPLAY_OPTION":
       return {
         ...state,
@@ -673,6 +670,7 @@ const LeaderboardProvider = ({ children }) => {
         dispatch({ type: "SET_LOADING", payload: loading }),
       setError: (error) => dispatch({ type: "SET_ERROR", payload: error }),
       setFilter: (key, value) => dispatch({ type: "SET_FILTER", key, value }),
+      toggleBooleanFilter: (filter) => dispatch({ type: "TOGGLE_BOOLEAN_FILTER", filter }),
       setDisplayOption: (key, value) =>
         dispatch({ type: "SET_DISPLAY_OPTION", key, value }),
       togglePinnedModel: (modelKey) =>