improve merging by year, support query url

public/index.html

@@ -82,6 +82,7 @@
   async function search() {
     const query = document.getElementById('q').value.trim();
     if (!query) return;
+    window.history.replaceState({}, '', '?q=' + encodeURIComponent(query));
     const filmsDiv = document.getElementById('films');
     filmsDiv.innerHTML = '<p class="loader">Searching...</p>';
 
@@ -189,6 +190,14 @@
       filmsDiv.innerHTML = `<p class="no-results">Search failed. Check the console.</p>`;
     }
   }
+    window.addEventListener('DOMContentLoaded', () => {
+      const params = new URLSearchParams(window.location.search);
+      const q = params.get('q');
+      if (q) {
+	document.getElementById('q').value = q;
+	search();
+      }
+    });
   document.getElementById('q').addEventListener('keydown', e => { if (e.key === 'Enter') search(); });
 </script>
 </body>