Consolidate dashboard clear-filters controls to one shared function (#76)

The sidebar's own Clear button cleared status/category/type/dates but
never search/priority/assigned_to, while the page-level "Clear All
Filters" button cleared a different subset. Neither control alone
reliably returned the dashboard to a fully unfiltered state. The
sidebar button now delegates to clearAllFilters() so both controls
always clear the same complete set of params.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015nCxwFFsy8ouMWzn56rPVP

assets/js/dashboard.js

@@ -361,14 +361,9 @@ function initSidebarFilters() {
     }
 
     if (clearFiltersBtn) {
-        clearFiltersBtn.addEventListener('click', () => {
+        // Delegate to clearAllFilters() so both controls always clear the same
-            const params = new URLSearchParams(window.location.search);
+        // complete set of filter params instead of two independently-maintained lists.
-            ['status','category','type',
+        clearFiltersBtn.addEventListener('click', clearAllFilters);
-             'created_from','created_to','updated_from','updated_to','closed_from','closed_to'
-            ].forEach(k => params.delete(k));
-            params.set('page', '1');
-            window.location.search = params.toString();
-        });
     }
 }