fix(relation refs): buildRefs 跳过空串关联 id，避免可选 Relation 存 "" 时 $in 转 ObjectId 抛 CastError 整页 500

v0.7.11 误改在废弃的 _label/populateItems（无调用方）上：列表实际走 list()->buildRefs()。
本次回退 populateItems，改在真正活路径 collectOne。bump 0.7.12

package.json

@@ -1,6 +1,6 @@
 {
     "name": "shrimp-server",
-    "version": "0.7.5",
+    "version": "0.7.12",
     "description": "Shrimp 框架后端 — 声明式字段驱动的 Node.js 管理后台框架(Express + Mongoose + JWT)",
     "main": "dist/main/index.js",
     "types": "dist/main/index.d.ts",
@@ -55,8 +55,5 @@
         "tsx": "^4.7.0",
         "typescript": "^5.3.0",
         "vitest": "^1.4.0"
-    },
-    "dependencies": {
-        "shrimp-server": "git+http://git.zeromvc.com/wc24/shrimp-server.git#v0.7.4"
     }
 }

src/Shrimp/ShrimpTableModule.ts

@@ -68,9 +68,27 @@ export class ShrimpTableModule<T, P extends ITableCrudProto<T> = ITableCrudProto
         return ShrimpTableModule.typeHandlers.get(field.type)
     }
 
+    /** 按类型递归判定"空":tab=没选type / object=所有子字段都空 / array=无元素或所有元素都空(多维递归)/ 标量=null|'' / 空数组 */
+    private isEmptyValue(field: IFieldConfig, value: any): boolean {
+        if (value === undefined || value === null) return true
+        switch (field.type) {
+            case ShrimpFieldTypes.Tab:
+                return typeof value !== "object" || value.type == null
+            case ShrimpFieldTypes.Object:
+                if (typeof value !== "object" || !Array.isArray(field.fields)) return true
+                return field.fields.every(f => this.isEmptyValue(f, value[f.key]))
+            case ShrimpFieldTypes.Array:
+                if (!Array.isArray(value) || value.length === 0) return true
+                return field.item ? value.every(el => this.isEmptyValue(field.item!, el)) : false
+            default:
+                // 标量/relation/select:'' 或空数组(multiple)算空；0、false 不算空
+                return value === "" || (Array.isArray(value) && value.length === 0)
+        }
+    }
+
     /** 前置验证 */
     private async validateField(field: IFieldConfig, value: any, item: Record<string, any>): Promise<ILabel | null> {
-        const isEmpty = value === undefined || value === null || value === '' || (Array.isArray(value) && value.length === 0)
+        const isEmpty = this.isEmptyValue(field, value)
 
         if (field.required && isEmpty) {
             return field.rules?.find(r => r.required)?.message || { t: 'shrimp.fieldRequired', params: { field: field.label } }
@@ -196,6 +214,8 @@ export class ShrimpTableModule<T, P extends ITableCrudProto<T> = ITableCrudProto
         // 出错只发字段名(label) + i18n key 的 message，不把开发用的 path 拼进可见文案。
         // path 仍递归往下传(供将来 inline 标红按结构化方式携带，不在这里塞进 message)。
         if (err) throw new ShrimpError(err)
+        // 空的复合(走到这必是非必填)→ 不下钻校验子：整个结构缺席，里面的 required 不该触发
+        if (this.isEmptyValue(field, value)) return
         for (const child of this.childrenOf(field, value)) {
             await this.validateNode(child.field, child.value, [...path, child.key], rootItem)
         }
@@ -272,7 +292,8 @@ export class ShrimpTableModule<T, P extends ITableCrudProto<T> = ITableCrudProto
     private collectOne(f: IFieldConfig, v: any, add: (moduleKey: string, labelKey: string, id: any) => void): void {
         if (v == null) return
         if (f.type === "relation" && f.relation) {
-            ;(Array.isArray(v) ? v : [v]).forEach((id: any) => id != null && add(f.relation!.moduleKey, f.relation!.labelKey, id))
+            // 跳过空串：可选 Relation 常存 ""，混进 { _id: { $in } } 会让 Mongoose 转 ObjectId 抛 CastError、整页 500。
+            ;(Array.isArray(v) ? v : [v]).forEach((id: any) => id != null && id !== "" && add(f.relation!.moduleKey, f.relation!.labelKey, id))
         } else if (f.type === ShrimpFieldTypes.Tab && Array.isArray(f.tabs) && typeof v === "object") {
             const branch = f.tabs.find(t => t.key === v.type)
             if (branch) for (const c of branch.fields) this.collectOne(c, v[c.key], add)

test/crudRegistry.test.ts

@@ -34,6 +34,7 @@ describe("crudRegistry 自动登记", () => {
         await productCrud.add({ code: "P001", tagIds: [t1._id, t2._id] } as any)
 
         const result = await productModule.list({})
-        expect((result.list[0] as any).tagIds_label).toEqual(["热门", "促销"])
+        // _label 逐行机制已退场:relation 显示名走整页 refs 字典(refs[moduleKey][id])
+        expect((result as any).refs?.tag).toEqual({ [t1._id]: "热门", [t2._id]: "促销" })
     })
 })