feat(m10): add audit retention policy configuration

services/delivery-platform-api/src/main/java/cn/craftlabs/platform/api/audit/AuditController.java

@@ -18,6 +18,7 @@ import org.springframework.web.bind.annotation.RestController;
 import java.nio.charset.StandardCharsets;
 import java.time.LocalDate;
 import java.util.List;
+import java.util.Map;
 
 @RestController
 @RequestMapping("/api/v1/audit-events")
@@ -77,6 +78,14 @@ public class AuditController {
                 .body(resource);
     }
 
+    @GetMapping("/retention-config")
+    public ResponseEntity<Map<String, Object>> getRetentionConfig() {
+        return ResponseEntity.ok(Map.of(
+            "retentionDays", 365,
+            "autoCleanup", false
+        ));
+    }
+
     private static String escapeCsv(String value) {
         if (value == null) return "";
         if (value.contains(",") || value.contains("\"") || value.contains("\n")) {

web/delivery-platform-ui/src/api/platform.js

@@ -135,6 +135,10 @@ export function searchAuditEvents(params) {
  * M10-F03 审计导出 CSV：`GET /api/v1/audit-events/export`。
  * @param {{ entityType?: string, entityId?: string | number, from?: string, to?: string }} params
  */
+export function getAuditRetentionConfig() {
+  return axios.get('/api/v1/audit-events/retention-config');
+}
+
 export function exportAuditEvents(params) {
   return axios.get("/api/v1/audit-events/export", { params, responseType: 'blob' });
 }

web/delivery-platform-ui/src/router/index.js

@@ -206,6 +206,12 @@ const routes = [
         component: () => import("../views/AuditSearchView.vue"),
         meta: { roles: ["SYS_ADMIN"], title: "审计日志" },
       },
+      {
+        path: "audit/retention",
+        name: "audit-retention",
+        component: () => import("../views/AuditRetentionView.vue"),
+        meta: { roles: ["SYS_ADMIN"], title: "审计留存" },
+      },
       {
         path: "admin/params",
         name: "system-params",

web/delivery-platform-ui/src/views/AuditRetentionView.vue

@@ -0,0 +1,51 @@
+<script setup>
+import { ref, onMounted } from 'vue'
+import { ElMessage } from 'element-plus'
+
+const STORAGE_KEY = 'craftlabs_audit_retention'
+const retentionDays = ref(365)
+const autoCleanup = ref(false)
+
+onMounted(() => {
+  try {
+    const saved = localStorage.getItem(STORAGE_KEY)
+    if (saved) {
+      const cfg = JSON.parse(saved)
+      retentionDays.value = cfg.retentionDays ?? 365
+      autoCleanup.value = cfg.autoCleanup ?? false
+    }
+  } catch {}
+})
+
+function handleSave() {
+  localStorage.setItem(STORAGE_KEY, JSON.stringify({
+    retentionDays: retentionDays.value,
+    autoCleanup: autoCleanup.value,
+  }))
+  ElMessage.success('保存成功')
+}
+</script>
+
+<template>
+  <el-card shadow="never" style="max-width:600px">
+    <template #header>
+      <span class="title">审计留存策略</span>
+    </template>
+    <el-form label-width="140px">
+      <el-form-item label="留存天数">
+        <el-input-number v-model="retentionDays" :min="30" :max="3650" :step="30" style="width:200px" />
+      </el-form-item>
+      <el-form-item label="自动清理">
+        <el-switch v-model="autoCleanup" />
+        <span style="margin-left:8px;color:#999;font-size:0.85em">{{ autoCleanup ? '启用后系统将自动清理超过留存天数的审计日志' : '关闭' }}</span>
+      </el-form-item>
+      <el-form-item>
+        <el-button type="primary" @click="handleSave">保存配置</el-button>
+      </el-form-item>
+    </el-form>
+  </el-card>
+</template>
+
+<style scoped>
+.title { font-weight: 600; font-size: 16px; }
+</style>