refactor(section-managers): adapt to unified clipping API

SectionAxisDialogManager:
- Update activateSectionAxis → activeSection in callbacks

SectionBoxDialogManager:
- Update activateSectionBox → activeSection('box')
- Disable fitSectionBoxToModel and resetSectionBox (not supported)

SectionPlaneDialogManager:
- Add activeSection('face') to onDialogCreated
- Add deactivateSection() to onBeforeDestroy
- Wire onHide to engine.clipping.disabled()
- Keep onReverse/onReset as log-only (not supported)

src/managers/section-axis-dialog-manager.ts

@@ -66,7 +66,7 @@ export class SectionAxisDialogManager extends BaseDialogManager {
             },
             onAxisChange: (axis) => {
                 console.log('[SectionAxisDialogManager] 切换轴向：', axis);
-                this.registry.engine3d?.activateSectionAxis(axis);
+                this.registry.engine3d?.activeSection(axis);
             }
         });
         this.panel.init();
@@ -84,7 +84,7 @@ export class SectionAxisDialogManager extends BaseDialogManager {
         }
         
         // 自动激活默认轴向剖切（X轴）
-        this.registry.engine3d.activateSectionAxis('x');
+        this.registry.engine3d.activeSection('x');
     }
 
     /** 对话框关闭时的回调，取消工具栏按钮激活状态 */
@@ -94,8 +94,7 @@ export class SectionAxisDialogManager extends BaseDialogManager {
 
     /** 销毁前的清理，销毁面板实例 */
     protected onBeforeDestroy(): void {
-        // 停用轴向剖切
-        this.registry.engine3d?.deactivateSectionAxis();
+        this.registry.engine3d?.deactivateSection();
         
         if (this.panel) {
             this.panel.destroy();

src/managers/section-box-dialog-manager.ts

@@ -65,10 +65,10 @@ export class SectionBoxDialogManager extends BaseDialogManager {
                 console.log('[SectionBoxDialogManager] 反向切换（底层暂不支持）：', isReversed);
             },
             onFitToModel: () => {
-                this.registry.engine3d?.fitSectionBoxToModel();
+                console.log('[SectionBoxDialogManager] Fit to model not supported in new API');
             },
             onReset: () => {
-                this.registry.engine3d?.resetSectionBox();
+                console.log('[SectionBoxDialogManager] Reset not supported in new API');
             },
             onRangeChange: (range) => {
                 this.registry.engine3d?.setSectionBoxRange(range);
@@ -80,7 +80,7 @@ export class SectionBoxDialogManager extends BaseDialogManager {
 
     /** 对话框创建后的回调，激活剖切盒并自适应高度 */
     protected onDialogCreated(): void {
-        this.registry.engine3d?.activateSectionBox();
+        this.registry.engine3d?.activeSection('box');
         this.dialog?.fitHeight(false);
     }
 
@@ -91,7 +91,7 @@ export class SectionBoxDialogManager extends BaseDialogManager {
 
     /** 销毁前的清理，停用剖切盒并销毁面板实例 */
     protected onBeforeDestroy(): void {
-        this.registry.engine3d?.deactivateSectionBox();
+        this.registry.engine3d?.deactivateSection();
         if (this.panel) {
             this.panel.destroy();
             this.panel = null;

src/managers/section-plane-dialog-manager.ts

@@ -49,18 +49,27 @@ export class SectionPlaneDialogManager extends BaseDialogManager {
         this.panel = new SectionPlanePanel({
             onHide: () => {
                 console.log('[SectionPlaneDialogManager] 隐藏');
+                if (this.registry.engine3d) {
+                    (this.registry.engine3d as any).engine?.clipping?.disabled();
+                }
             },
             onReverse: () => {
-                console.log('[SectionPlaneDialogManager] 反向');
+                console.log('[SectionPlaneDialogManager] 反向 (not supported in new API)');
             },
             onReset: () => {
-                console.log('[SectionPlaneDialogManager] 重置');
+                console.log('[SectionPlaneDialogManager] 重置 (not supported in new API)');
             }
         });
         this.panel.init();
         return this.panel.element;
     }
 
+    /** 对话框创建后的回调 */
+    protected onDialogCreated(): void {
+        this.registry.engine3d?.activeSection('face');
+        this.dialog?.fitHeight(false);
+    }
+
     /** 对话框关闭时的回调 */
     protected onDialogClose(): void {
         this.registry.toolbar?.setBtnActive('section-plane', false);
@@ -68,6 +77,7 @@ export class SectionPlaneDialogManager extends BaseDialogManager {
 
     /** 销毁前的清理 */
     protected onBeforeDestroy(): void {
+        this.registry.engine3d?.deactivateSection();
         if (this.panel) {
             this.panel.destroy();
             this.panel = null;