Collapse filter rules and add code block filter

modules/story-summary/story-summary-ui.js

@@ -73,10 +73,11 @@
         '陌生': 'trend-stranger', '投缘': 'trend-click', '亲密': 'trend-close', '交融': 'trend-merge'
     };
 
-    const DEFAULT_FILTER_RULES = [
-        { start: '<think>', end: '</think>' },
-        { start: '<thinking>', end: '</thinking>' },
-    ];
+const DEFAULT_FILTER_RULES = [
+    { start: '<think>', end: '</think>' },
+    { start: '<thinking>', end: '</thinking>' },
+    { start: '```', end: '```' },
+];
 
     // ═══════════════════════════════════════════════════════════════════════════
     // State
@@ -209,8 +210,11 @@
         list.querySelectorAll('.btn-del-rule').forEach(btn => {
             btn.onclick = () => {
                 btn.closest('.filter-rule-item')?.remove();
+                updateFilterRulesCount();
             };
         });
+
+        updateFilterRulesCount();
     }
 
     function collectFilterRules() {
@@ -244,8 +248,19 @@
             </div>
             <button class="btn-del-rule">✕</button>
         `);
-        div.querySelector('.btn-del-rule').onclick = () => div.remove();
+        div.querySelector('.btn-del-rule').onclick = () => {
+            div.remove();
+            updateFilterRulesCount();
+        };
         list.appendChild(div);
+        updateFilterRulesCount();
+    }
+
+    function updateFilterRulesCount() {
+        const el = $('filter-rules-count');
+        if (!el) return;
+        const count = $('filter-rules-list')?.querySelectorAll('.filter-rule-item')?.length || 0;
+        el.textContent = count;
     }
 
 
@@ -1565,6 +1580,17 @@
             };
         }
 
+        // Filter rules collapsible
+        const filterRulesToggle = $('filter-rules-toggle');
+        const filterRulesContent = $('filter-rules-content');
+        if (filterRulesToggle && filterRulesContent) {
+            filterRulesToggle.onclick = () => {
+                const collapse = filterRulesToggle.closest('.settings-collapse');
+                collapse.classList.toggle('open');
+                filterRulesContent.classList.toggle('hidden');
+            };
+        }
+
         // Auto summary sub-options toggle
         const triggerEnabled = $('trigger-enabled');
         const autoSummaryOptions = $('auto-summary-options');