feat(ui): show hidden floor count and render limit

ui/hide-engine.js

@@ -34,6 +34,13 @@ function getTimerApi(runtime = {}) {
   };
 }
 
+function notifyRuntimeHideStateChanged(runtime = {}) {
+  try {
+    runtime.refreshPanelLiveState?.();
+  } catch {
+  }
+}
+
 function getCurrentContext(runtime = {}) {
   try {
     return typeof runtime.getContext === "function" ? runtime.getContext() : null;
@@ -487,10 +494,15 @@ export function scheduleHideSettingsApply(
   const snapshot = normalizeHideSettings(settings);
   hideState.scheduledTimer = timers.setTimeout(() => {
     hideState.scheduledTimer = null;
-    void applyHideSettings(snapshot, runtime).catch((error) => {
-      console.warn?.("[ST-BME] scheduled hide apply failed", error);
-    });
+    void applyHideSettings(snapshot, runtime)
+      .then(() => {
+        notifyRuntimeHideStateChanged(runtime);
+      })
+      .catch((error) => {
+        console.warn?.("[ST-BME] scheduled hide apply failed", error);
+      });
   }, Math.max(0, Math.trunc(Number(delayMs) || 0)));
+  notifyRuntimeHideStateChanged(runtime);
 }
 
 export async function unhideAll(runtime = {}) {

ui/panel-bridge.js

@@ -151,6 +151,7 @@ async function ensurePanelBridgeReady(runtime) {
     getLastInjection: runtime.getLastInjection,
     getRuntimeDebugSnapshot: runtime.getRuntimeDebugSnapshot,
     getGraphPersistenceState: runtime.getGraphPersistenceState,
+    getHideStateSnapshot: runtime.getHideStateSnapshot,
     updateSettings: (patch) => {
       const nextSettings = runtime.updateSettings(patch);
       if (Object.prototype.hasOwnProperty.call(patch || {}, "panelTheme")) {

ui/panel.html

@@ -1366,6 +1366,41 @@
                   <div class="bme-config-help">
                     设置修改后会自动生效。`0` 表示不隐藏；“取消全部隐藏”会立即把当前聊天里由 ST-BME 隐藏的楼层恢复。
                   </div>
+                  <div class="bme-config-help">
+                    当前隐藏：<strong id="bme-hide-old-messages-hidden-count">0</strong>
+                    层；<span id="bme-hide-old-messages-status-detail">未应用</span>
+                  </div>
+                  <label
+                    class="bme-toggle-item"
+                    for="bme-setting-hide-old-messages-render-limit-enabled"
+                  >
+                    <span class="bme-toggle-copy">
+                      <span class="bme-toggle-title">限制聊天区渲染楼层</span>
+                      <span class="bme-toggle-desc">
+                        只控制前端最多加载最近多少层；不等于隐藏，未隐藏楼层仍可能进入上下文。
+                      </span>
+                    </span>
+                    <input
+                      id="bme-setting-hide-old-messages-render-limit-enabled"
+                      type="checkbox"
+                    />
+                  </label>
+                  <div class="bme-config-row">
+                    <label for="bme-setting-hide-old-messages-render-limit">
+                      最多渲染最近 N 条消息
+                    </label>
+                    <input
+                      id="bme-setting-hide-old-messages-render-limit"
+                      class="bme-config-input"
+                      type="number"
+                      min="0"
+                      max="1000"
+                      placeholder="0 = 不限制渲染"
+                    />
+                  </div>
+                  <div class="bme-config-help">
+                    参考隐藏助手的“限制楼层”：用于减少超长聊天界面卡顿；真正节省上下文 token 仍由上方“旧楼层隐藏”负责。
+                  </div>
                   <div class="bme-config-actions">
                     <button
                       class="bme-config-secondary-btn"

ui/panel.js

@@ -388,6 +388,7 @@ let _getLastRecallStatus = null;
 let _getLastInjection = null;
 let _getRuntimeDebugSnapshot = null;
 let _getGraphPersistenceState = null;
+let _getHideStateSnapshot = null;
 let _updateSettings = null;
 let _actionHandlers = {};
 
@@ -952,6 +953,7 @@ export async function initPanel({
   getLastInjection,
   getRuntimeDebugSnapshot,
   getGraphPersistenceState,
+  getHideStateSnapshot,
   updateSettings,
   actions,
 }) {
@@ -967,6 +969,7 @@ export async function initPanel({
   _getLastInjection = getLastInjection;
   _getRuntimeDebugSnapshot = getRuntimeDebugSnapshot;
   _getGraphPersistenceState = getGraphPersistenceState;
+  _getHideStateSnapshot = getHideStateSnapshot;
   _updateSettings = updateSettings;
   _actionHandlers = actions || {};
 
@@ -1277,6 +1280,7 @@ export function refreshLiveState() {
   _applyGraphRuntimeConfig(_getSettings?.() || {});
   _refreshRuntimeStatus();
   _refreshNativeRolloutStatusUi(_getSettings?.() || {});
+  _refreshHideOldMessagesStatus(_getSettings?.() || {});
 
   switch (currentTabId) {
     case "dashboard":
@@ -1300,6 +1304,45 @@ export function refreshLiveState() {
   _scheduleVisibleGraphWorkspaceRefresh();
 }
 
+function _refreshHideOldMessagesStatus(settings = _getSettings?.() || {}) {
+  const countEl = document.getElementById("bme-hide-old-messages-hidden-count");
+  const detailEl = document.getElementById("bme-hide-old-messages-status-detail");
+  if (!countEl && !detailEl) return;
+
+  const snapshot =
+    typeof _getHideStateSnapshot === "function" ? _getHideStateSnapshot() || {} : {};
+  const hiddenCount = Math.max(
+    0,
+    Math.trunc(Number(snapshot.managedHiddenCount ?? 0) || 0),
+  );
+  const scannedCount = Math.max(
+    0,
+    Math.trunc(Number(snapshot.lastProcessedLength ?? 0) || 0),
+  );
+  const keepLastN = Math.max(
+    0,
+    Math.trunc(Number(settings.hideOldMessagesKeepLastN ?? 0) || 0),
+  );
+  const detailParts = [];
+
+  if (settings.hideOldMessagesEnabled !== true) {
+    detailParts.push("旧楼层隐藏未启用");
+  } else if (keepLastN <= 0) {
+    detailParts.push("保留最近 N 为 0，不会隐藏");
+  } else {
+    detailParts.push(`保留最近 ${keepLastN} 层`);
+  }
+  if (scannedCount > 0) {
+    detailParts.push(`已扫描 ${scannedCount} 层`);
+  }
+  if (snapshot.scheduled === true) {
+    detailParts.push("等待自动应用");
+  }
+
+  if (countEl) countEl.textContent = String(hiddenCount);
+  if (detailEl) detailEl.textContent = detailParts.join(" · ") || "未应用";
+}
+
 // ==================== Tab 切换 ====================
 
 function _bindTabs() {
@@ -6587,6 +6630,10 @@ function _refreshConfigTab() {
     "bme-setting-hide-old-messages-enabled",
     settings.hideOldMessagesEnabled ?? false,
   );
+  _setCheckboxValue(
+    "bme-setting-hide-old-messages-render-limit-enabled",
+    settings.hideOldMessagesRenderLimitEnabled ?? false,
+  );
   _setCheckboxValue(
     "bme-setting-recall-enabled",
     settings.recallEnabled ?? true,
@@ -6746,6 +6793,11 @@ function _refreshConfigTab() {
     "bme-setting-hide-old-messages-keep-last-n",
     settings.hideOldMessagesKeepLastN ?? 12,
   );
+  _setInputValue(
+    "bme-setting-hide-old-messages-render-limit",
+    settings.hideOldMessagesRenderLimit ?? 0,
+  );
+  _refreshHideOldMessagesStatus(settings);
   _setInputValue(
     "bme-setting-extract-context-turns",
     settings.extractContextTurns ?? 2,
@@ -7057,6 +7109,12 @@ function _bindConfigControls() {
   bindCheckbox("bme-setting-hide-old-messages-enabled", (checked) => {
     _patchSettings({ hideOldMessagesEnabled: checked });
   });
+  bindCheckbox(
+    "bme-setting-hide-old-messages-render-limit-enabled",
+    (checked) => {
+      _patchSettings({ hideOldMessagesRenderLimitEnabled: checked });
+    },
+  );
   bindCheckbox("bme-setting-recall-enabled", (checked) => {
     _patchSettings({ recallEnabled: checked });
     _refreshGuardedConfigStates();
@@ -7254,6 +7312,13 @@ function _bindConfigControls() {
     200,
     (value) => _patchSettings({ hideOldMessagesKeepLastN: value }),
   );
+  bindNumber(
+    "bme-setting-hide-old-messages-render-limit",
+    0,
+    0,
+    1000,
+    (value) => _patchSettings({ hideOldMessagesRenderLimit: value }),
+  );
   bindNumber("bme-setting-extract-context-turns", 2, 0, 20, (value) =>
     _patchSettings({ extractContextTurns: value }),
   );
@@ -7775,6 +7840,7 @@ function _bindConfigControls() {
         toastr.error(result.error, "ST-BME");
         return;
       }
+      _refreshHideOldMessagesStatus(_getSettings?.() || {});
       toastr.success("当前聊天的隐藏设置已重新应用", "ST-BME");
     });
   document
@@ -7786,6 +7852,7 @@ function _bindConfigControls() {
         toastr.error(result.error, "ST-BME");
         return;
       }
+      _refreshHideOldMessagesStatus(_getSettings?.() || {});
       toastr.info("已取消当前聊天里由 ST-BME 应用的隐藏", "ST-BME");
     });
   document