UI: flatten preferences behavior tabs and add node parameter editor shortcut

- Move Behavior-General options (hover focus, slider ladder, scroll zooms)
  into the General preferences tab.
- Move Behavior-Audio option (audio scrubbing) into the Audio preferences tab.
- Promote remaining Behavior categories (Timeline, Playback, Project, Nodes,
  Rendering) to top-level sidebar entries without the 'Behavior - ' prefix.
- Update Chinese translations for the new sidebar titles and fill unfinished
  Behavior tab strings.

NodeView:
- Remove double-click jump-to-parameter-editor behavior; keep expand/collapse.
- Add right-click context menu item 'Show in Parameter Editor'.
- Add Shift+P shortcut bound to the same action.

Render:
- Fix crash in PreviewAutoCacher::ClearSingleFrameRenders when proxy playback
  causes a render ticket to finish synchronously before the watcher pointer is
  returned. Defer the watcher Finished signal via queued connection so the
  caller can safely register the watcher before it is deleted.

app/ts/zh_CN.ts

@@ -5919,7 +5919,12 @@ Do you wish to paste values onto the existing nodes or paste new nodes?</source>
         <translation>在查看器中打开</translation>
     </message>
     <message>
-        <location filename="../widget/nodeview/nodeview.cpp" line="865"/>
+        <location filename="../widget/nodeview/nodeview.cpp" line="863"/>
+        <source>Show in Parameter Editor</source>
+        <translation>在参数编辑器中显示</translation>
+    </message>
+    <message>
+        <location filename="../widget/nodeview/nodeview.cpp" line="869"/>
         <source>P&amp;roperties</source>
         <translation>属性(&amp;R)</translation>
     </message>
@@ -6438,7 +6443,7 @@ This is equivalent to multiplying a video by a number between 0.0 and 1.0.</sour
     <message>
         <location filename="../dialog/preferences/tabs/preferencesbehaviortab.cpp" line="57"/>
         <source>Enable audio scrubbing</source>
-        <translation>启用音频清理</translation>
+        <translation>启用音频搓擦</translation>
     </message>
     <message>
         <location filename="../dialog/preferences/tabs/preferencesbehaviortab.cpp" line="60"/>
@@ -6545,11 +6550,7 @@ This is equivalent to multiplying a video by a number between 0.0 and 1.0.</sour
         <source>Enable slider ladder</source>
         <translation>启用滑块阶梯</translation>
     </message>
-    <message>
-        <location filename="../dialog/preferences/tabs/preferencesbehaviortab.cpp" line="41"/>
-        <source>Setting</source>
-        <translation type="unfinished"></translation>
-    </message>
+
     <message>
         <location filename="../dialog/preferences/tabs/preferencesbehaviortab.cpp" line="51"/>
         <source>Scrolling zooms by default</source>
@@ -6561,30 +6562,30 @@ This is equivalent to multiplying a video by a number between 0.0 and 1.0.</sour
         <translation>默认情况下，滚动将移动视图，按住Ctrl/Cmd将使其变为缩放。启用此选项将切换这些视图，默认情况下滚动将缩放，而按住Ctrl/Cmd将移动视图。</translation>
     </message>
     <message>
-        <location filename="../dialog/preferences/tabs/preferencesbehaviortab.cpp" line="102"/>
+        <location filename="../dialog/preferences/tabs/preferencesbehaviortab.cpp" line="76"/>
         <source>Rendering</source>
-        <translation type="unfinished"></translation>
+        <translation>渲染</translation>
     </message>
     <message>
-        <location filename="../dialog/preferences/tabs/preferencesbehaviortab.cpp" line="104"/>
+        <location filename="../dialog/preferences/tabs/preferencesbehaviortab.cpp" line="78"/>
         <source>Graphics Backend</source>
-        <translation type="unfinished"></translation>
+        <translation>图形后端</translation>
     </message>
     <message>
-        <location filename="../dialog/preferences/tabs/preferencesbehaviortab.cpp" line="106"/>
+        <location filename="../dialog/preferences/tabs/preferencesbehaviortab.cpp" line="80"/>
         <source>Selects the graphics API Oak should request on next launch. Vulkan is experimental: on most systems it will fall back to OpenGL or use a prototype Vulkan path that is not yet fully validated.</source>
-        <translation type="unfinished"></translation>
+        <translation>选择 Oak 在下次启动时应请求的图形 API。Vulkan 是实验性的：在大多数系统上它会回退到 OpenGL，或使用尚未完全验证的原型 Vulkan 路径。</translation>
     </message>
     <message>
-        <location filename="../dialog/preferences/tabs/preferencesbehaviortab.cpp" line="111"/>
-        <location filename="../dialog/preferences/tabs/preferencesbehaviortab.cpp" line="125"/>
+        <location filename="../dialog/preferences/tabs/preferencesbehaviortab.cpp" line="85"/>
+        <location filename="../dialog/preferences/tabs/preferencesbehaviortab.cpp" line="99"/>
         <source>OpenGL</source>
-        <translation></translation>
+        <translation>OpenGL</translation>
     </message>
     <message>
-        <location filename="../dialog/preferences/tabs/preferencesbehaviortab.cpp" line="112"/>
+        <location filename="../dialog/preferences/tabs/preferencesbehaviortab.cpp" line="86"/>
         <source>Vulkan (experimental)</source>
-        <translation type="unfinished"></translation>
+        <translation>Vulkan（实验性）</translation>
     </message>
     <message>
         <location filename="../dialog/preferences/tabs/preferencesbehaviortab.cpp" line="126"/>
@@ -6611,24 +6612,40 @@ This is equivalent to multiplying a video by a number between 0.0 and 1.0.</sour
     </message>
     <message>
         <location filename="../dialog/preferences/preferences.cpp" line="48"/>
-        <source>Behavior</source>
-        <translation>行为</translation>
-    </message>
-    <message>
-        <location filename="../dialog/preferences/preferences.cpp" line="49"/>
-        <source>Disk</source>
-        <translation>磁盘</translation>
-    </message>
-    <message>
-        <location filename="../dialog/preferences/preferences.cpp" line="50"/>
         <source>Audio</source>
         <translation>音频</translation>
     </message>
     <message>
-        <location filename="../dialog/preferences/preferences.cpp" line="51"/>
-        <source>Keyboard</source>
-        <translation>键盘</translation>
+        <location filename="../dialog/preferences/preferences.cpp" line="49"/>
+        <source>Timeline</source>
+        <translation>时间线</translation>
     </message>
+    <message>
+        <location filename="../dialog/preferences/preferences.cpp" line="50"/>
+        <source>Playback</source>
+        <translation>回放</translation>
+    </message>
+    <message>
+        <location filename="../dialog/preferences/preferences.cpp" line="51"/>
+        <source>Project</source>
+        <translation>项目</translation>
+    </message>
+    <message>
+        <location filename="../dialog/preferences/preferences.cpp" line="52"/>
+        <source>Nodes</source>
+        <translation>节点</translation>
+    </message>
+    <message>
+        <location filename="../dialog/preferences/preferences.cpp" line="53"/>
+        <source>Rendering</source>
+        <translation>渲染</translation>
+    </message>
+    <message>
+        <location filename="../dialog/preferences/preferences.cpp" line="54"/>
+        <source>Disk</source>
+        <translation>磁盘</translation>
+    </message>
+
 </context>
 <context>
     <name>olive::PreferencesDiskTab</name>