feat(preference): 票14 自定义视图 Controller 接线 /api/preference/view

SavedViewController(与列偏好同处 /api/preference 前缀，挂 /view 子路径)：
- GET  /list        列出当前用户某 scope 视图(按 seqNo)
- POST /save        保存(@RequestBody SavedView；viewId 空=新建/非空=编辑)
- POST /delete      删除
- POST /set-default 图钉设默认(单值互斥)

userId 从 SecurityContext，不接受前端传入；scope 由业务方约定(商机本期
opportunity.sales)；内置视图不走本接口。mvn -pl crm-preference test 16 全绿。

crm-preference/src/main/java/com/crm/preference/controller/SavedViewController.java

@@ -0,0 +1,71 @@
+package com.crm.preference.controller;
+
+import com.crm.base.domain.result.Result;
+import com.crm.base.security.SecurityUtils;
+import com.crm.preference.domain.dto.SavedView;
+import com.crm.preference.service.SavedViewService;
+import io.swagger.v3.oas.annotations.Operation;
+import lombok.RequiredArgsConstructor;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+
+/**
+ * 自定义视图接口（票 14）。
+ *
+ * <p>平台级第二种偏好，与 {@link ColumnPreferenceController} 同处 {@code /api/preference} 前缀下、
+ * 挂 {@code /view} 子路径。权限策略同列偏好：不种子化权限点，ApiPermissionInterceptor 对未注册 URL
+ * fail-open。视图为用户私有，userId 从 SecurityContext 获取，不接受前端传入。</p>
+ *
+ * <p>scope 由业务方约定（商机销售机会工作区本期传 {@code opportunity.sales}）；内置视图不走本接口
+ * （内置口径硬编码在业务方），本接口只管理用户自建视图。</p>
+ */
+@RestController
+@RequestMapping("/api/preference/view")
+@RequiredArgsConstructor
+public class SavedViewController {
+
+    private final SavedViewService savedViewService;
+
+    @Operation(summary = "列出当前用户在某 scope 的自定义视图（按 seqNo）",
+            tags = {"销售机会/自定义视图"})
+    @GetMapping("/list")
+    public Result<List<SavedView>> list(@RequestParam("scopeKey") String scopeKey) {
+        Long userId = Long.valueOf(SecurityUtils.getRequiredUserId());
+        return Result.success(savedViewService.list(userId, scopeKey));
+    }
+
+    @Operation(summary = "保存自定义视图（viewId 空=新建，非空=覆盖编辑；isDefault 单值互斥）",
+            tags = {"销售机会/自定义视图"})
+    @PostMapping("/save")
+    public Result<String> save(@RequestParam("scopeKey") String scopeKey,
+                               @RequestBody SavedView view) {
+        Long userId = Long.valueOf(SecurityUtils.getRequiredUserId());
+        return Result.success(savedViewService.save(userId, scopeKey, view));
+    }
+
+    @Operation(summary = "删除自定义视图",
+            tags = {"销售机会/自定义视图"})
+    @PostMapping("/delete")
+    public Result<Void> delete(@RequestParam("scopeKey") String scopeKey,
+                               @RequestParam("viewId") String viewId) {
+        Long userId = Long.valueOf(SecurityUtils.getRequiredUserId());
+        savedViewService.delete(userId, scopeKey, viewId);
+        return Result.success();
+    }
+
+    @Operation(summary = "图钉：设为该 scope 的默认视图（单值互斥）",
+            tags = {"销售机会/自定义视图"})
+    @PostMapping("/set-default")
+    public Result<Void> setDefault(@RequestParam("scopeKey") String scopeKey,
+                                   @RequestParam("viewId") String viewId) {
+        Long userId = Long.valueOf(SecurityUtils.getRequiredUserId());
+        savedViewService.setDefault(userId, scopeKey, viewId);
+        return Result.success();
+    }
+}