feat: 编辑器增加「重置」和「丢弃预览版」按钮，支持回退预览版快照

par-api/src/main/java/com/par/api/controller/AdminController.java

@@ -462,6 +462,15 @@ public class AdminController {
         return ApiResponse.success(result);
     }
 
+    /** 丢弃预览版快照（删除所有 draft），站点配置回退到正式版 */
+    @PostMapping("/sites/{siteId}/discard-draft")
+    public ApiResponse<Map<String, Object>> discardDraft(@PathVariable("siteId") String siteId,
+                                                          HttpServletRequest request) {
+        checkAdmin(request);
+        int deleted = snapshotService.discardDraft(siteId);
+        return ApiResponse.success(Map.of("siteId", siteId, "deleted", deleted));
+    }
+
     @GetMapping("/sites")
     public ApiResponse<List<com.par.core.dto.SiteDTO>> listAllSites(HttpServletRequest request) {
         checkAdmin(request);

par-core/src/main/java/com/par/core/mapper/SiteSnapshotMapper.java

@@ -23,4 +23,8 @@ public interface SiteSnapshotMapper extends BaseMapper<SiteSnapshot> {
     /** 查询站点最新快照：draft 优先，无 draft 则取 published */
     @Select("SELECT * FROM site_snapshots WHERE site_id = #{siteId} AND status IN ('draft','published') ORDER BY CASE WHEN status = 'draft' THEN 0 ELSE 1 END, version DESC LIMIT 1")
     SiteSnapshot selectLatestWithDraft(@Param("siteId") String siteId);
+
+    /** 删除站点指定状态的快照 */
+    @org.apache.ibatis.annotations.Delete("DELETE FROM site_snapshots WHERE site_id = #{siteId} AND status = #{status}")
+    int deleteBySiteIdAndStatus(@Param("siteId") String siteId, @Param("status") String status);
 }

par-core/src/main/java/com/par/core/service/SiteSnapshotService.java

@@ -71,4 +71,10 @@ public interface SiteSnapshotService {
      * @return 成功发布的站点数
      */
     int publishChanged();
+
+    /**
+     * 丢弃预览版快照（删除所有 draft 记录），回退到正式版
+     * @return 删除的 draft 记录数
+     */
+    int discardDraft(String siteId);
 }

par-core/src/main/java/com/par/core/service/impl/SiteSnapshotServiceImpl.java

@@ -333,6 +333,19 @@ public class SiteSnapshotServiceImpl implements SiteSnapshotService {
         return count;
     }
 
+    @Override
+    @Transactional
+    public int discardDraft(String siteId) {
+        int deleted = snapshotMapper.deleteBySiteIdAndStatus(siteId, "draft");
+        if (deleted > 0) {
+            jsonCache.invalidate(draftKey(siteId));
+            log.info("预览版已丢弃: siteId={}, 删除 {} 条记录", siteId, deleted);
+        } else {
+            log.info("站点 {} 无预览版可丢弃", siteId);
+        }
+        return deleted;
+    }
+
     /** 将快照转为 mediabot 可用的 JSON 字符串 */
     private String toBundleJson(SiteSnapshot snapshot) {
         try {

web/src/views/AccessResultCheck.vue

@@ -48,6 +48,7 @@
               <el-option v-for="v in allConfigVersions" :key="v.id" :label="'v'+v.version+' '+v.status" :value="v.id" />
             </el-select>
             <el-button size="small" @click="revertScript">回滚</el-button>
+            <el-button v-if="hasUnsavedChanges" size="small" @click="resetScript" type="warning">重置</el-button>
             <el-button size="small" type="primary" @click="saveScript" :loading="saving">保存</el-button>
             <el-button size="small" type="danger" @click="deleteScript" :loading="deleting">删除</el-button>
             <template v-if="selectedConfig?.status==='pending'">
@@ -58,6 +59,7 @@
             <!-- 快照发布 -->
             <el-button size="small" @click="savePreview" :loading="savingPreview" v-if="snapshotStatus">保存预览版</el-button>
             <el-button size="small" type="success" @click="publishSnapshot" :loading="publishing" v-if="snapshotStatus?.draft.exists || snapshotStatus?.hasPendingPublish">发布正式版</el-button>
+            <el-button size="small" type="danger" @click="discardDraftSnapshot" :loading="discardingDraft" v-if="snapshotStatus?.draft.exists">丢弃预览版</el-button>
             <el-tag v-if="hasUnsavedChanges" size="small" type="danger" effect="dark">未保存</el-tag>
           </template>
           <el-button v-if="!scriptExpanded && selectedConfigId" size="small" type="primary" @click="saveScript" :loading="saving">保存</el-button>
@@ -161,7 +163,7 @@ const siteId = route.params.siteId
 const loading = ref(false), parseLoading = ref(false), scriptExpanded = ref(true), historyVersion = ref(null), urlFilter = ref(''), deleting = ref(false)
 const selectedConfigId = ref(null), selectedConfig = ref(null)
 const scriptContent = ref(''), originalScript = ref(''), saving = ref(false), approving = ref(false), rejecting = ref(false)
-const savingPreview = ref(false), publishing = ref(false)
+const savingPreview = ref(false), publishing = ref(false), discardingDraft = ref(false)
 const snapshotStatus = ref(null)
 const allConfigVersions = ref([]), allResults = ref([])
 const pageParsed = ref({}), reparsingUrls = reactive(new Set()), expanded = reactive(new Set())
@@ -254,6 +256,22 @@ const publishSnapshot = async () => {
   finally { publishing.value = false }
 }
 
+const resetScript = () => {
+  scriptContent.value = originalScript.value
+  ElMessage.success('已重置到上次保存的状态')
+}
+
+const discardDraftSnapshot = async () => {
+  try { await ElMessageBox.confirm('确认丢弃预览版？将回退到正式版。', '丢弃预览版', {confirmButtonText:'确认丢弃',type:'warning'}) } catch { return }
+  discardingDraft.value = true
+  try {
+    await api.raw.post('/admin/sites/' + siteId + '/discard-draft')
+    ElMessage.success('预览版已丢弃，当前为正式版')
+    fetchSnapshotStatus()
+  } catch { ElMessage.error('丢弃预览版失败') }
+  finally { discardingDraft.value = false }
+}
+
 watch(selectedConfig, (v) => { if (v) loadScript() })
 
 const loadHistoryScript = async (configId) => {

web/src/views/RiskRules.vue

@@ -41,9 +41,11 @@
       </div>
       <div style="display:flex;gap:8px">
         <el-button size="small" type="primary" @click="saveRules" :loading="saving">保存</el-button>
+        <el-button v-if="hasUnsavedChanges" size="small" @click="resetEditor" type="warning">重置</el-button>
         <el-button size="small" @click="uploadRules" :loading="uploading">上传</el-button>
         <el-button v-if="snapshotStatus" size="small" @click="savePreview" :loading="savingPreview">保存预览版</el-button>
         <el-button v-if="snapshotStatus?.draft.exists" size="small" type="success" @click="publishSnapshot" :loading="publishing">发布正式版</el-button>
+        <el-button v-if="snapshotStatus?.draft.exists" size="small" type="danger" @click="discardDraft" :loading="discardingDraft">丢弃预览版</el-button>
         <el-button size="small" @click="editType=''">返回列表</el-button>
       </div>
     </div>
@@ -279,7 +281,7 @@ const presets = [
 ]
 
 // ============ 状态 ============
-const loading = ref(false), saving = ref(false), uploading = ref(false), savingPreview = ref(false), publishing = ref(false)
+const loading = ref(false), saving = ref(false), uploading = ref(false), savingPreview = ref(false), publishing = ref(false), discardingDraft = ref(false)
 const sites = ref([]), rulesMap = ref({})
 const editType = ref(''), editorJson = ref('[]'), originalJson = ref('')
 const snapshotStatus = ref(null)
@@ -403,6 +405,22 @@ const publishSnapshot = async () => {
   finally { publishing.value = false }
 }
 
+const resetEditor = () => {
+  editorJson.value = originalJson.value
+  ElMessage.success('已重置到上次保存的状态')
+}
+
+const discardDraft = async () => {
+  try { await ElMessageBox.confirm('确认丢弃预览版？将回退到正式版。', '丢弃预览版', {confirmButtonText:'确认丢弃',type:'warning'}) } catch { return }
+  discardingDraft.value = true
+  try {
+    await api.raw.post('/admin/sites/' + editType.value + '/discard-draft')
+    ElMessage.success('预览版已丢弃，当前为正式版')
+    fetchSnapshotStatus()
+  } catch { ElMessage.error('丢弃预览版失败') }
+  finally { discardingDraft.value = false }
+}
+
 const sync = () => { editorJson.value = JSON.stringify(parsed.value, null, 2) }
 
 const confirmRemove = async (idx) => {

web/src/views/SitePages.vue

@@ -53,9 +53,11 @@
       </div>
       <div style="display:flex;gap:8px">
         <el-button size="small" type="primary" @click="savePages" :loading="saving">保存</el-button>
+        <el-button v-if="hasUnsavedChanges" size="small" @click="resetEditor" type="warning">重置</el-button>
         <el-button size="small" @click="uploadPages" :loading="uploading">上传</el-button>
         <el-button v-if="!isDefaultEditor && snapshotStatus" size="small" @click="savePreview" :loading="savingPreview">保存预览版</el-button>
         <el-button v-if="!isDefaultEditor && snapshotStatus?.draft.exists" size="small" type="success" @click="publishSnapshot" :loading="publishing">发布正式版</el-button>
+        <el-button v-if="!isDefaultEditor && snapshotStatus?.draft.exists" size="small" type="danger" @click="discardDraft" :loading="discardingDraft">丢弃预览版</el-button>
         <el-button size="small" type="danger" @click="deletePages" :loading="deleting">删除</el-button>
         <el-button size="small" @click="editSiteId=''">返回列表</el-button>
       </div>
@@ -122,7 +124,7 @@
 <script setup>
 import api from '../api'; import { Refresh } from '@element-plus/icons-vue'
 
-const loading = ref(false), saving = ref(false), uploading = ref(false), deleting = ref(false), savingPreview = ref(false), publishing = ref(false)
+const loading = ref(false), saving = ref(false), uploading = ref(false), deleting = ref(false), savingPreview = ref(false), publishing = ref(false), discardingDraft = ref(false)
 const sites = ref([]), pagesMap = ref({}), sitesList = ref([])
 const editSiteId = ref(''), editorJson = ref('{}'), originalJson = ref('')
 const snapshotStatus = ref(null)
@@ -247,6 +249,22 @@ const publishSnapshot = async () => {
   finally { publishing.value = false }
 }
 
+const resetEditor = () => {
+  editorJson.value = originalJson.value
+  ElMessage.success('已重置到上次保存的状态')
+}
+
+const discardDraft = async () => {
+  try { await ElMessageBox.confirm('确认丢弃预览版？将回退到正式版。', '丢弃预览版', {confirmButtonText:'确认丢弃',type:'warning'}) } catch { return }
+  discardingDraft.value = true
+  try {
+    await api.raw.post('/admin/sites/' + editSiteId.value + '/discard-draft')
+    ElMessage.success('预览版已丢弃，当前为正式版')
+    fetchSnapshotStatus()
+  } catch { ElMessage.error('丢弃预览版失败') }
+  finally { discardingDraft.value = false }
+}
+
 const remove = (idx) => { parsed.value.splice(idx,1); syncToJson() }
 const addEntry = () => { parsed.value.push({key:'',method:'GET',url:'{base}'}); syncToJson() }
 const deletePages = async () => {

web/src/views/Sites.vue

@@ -62,9 +62,11 @@
         <el-tag v-if="hasUnsavedChanges" size="small" type="danger" effect="dark">未保存</el-tag>
       </div>
       <div style="display:flex;gap:8px">
+        <el-button size="small" @click="resetEditor" v-if="hasUnsavedChanges" type="warning">重置</el-button>
         <el-button size="small" @click="editSiteId=''">返回列表</el-button>
         <el-button size="small" @click="saveSite" :loading="saving">保存站点</el-button>
         <el-button size="small" @click="savePreview" :loading="savingPreview">保存预览版</el-button>
+        <el-button size="small" @click="discardDraft" :loading="discarding" v-if="snapshotStatus?.draft.exists" type="danger">丢弃预览版</el-button>
         <el-button size="small" type="success" @click="publishSite" :loading="publishing">发布正式版</el-button>
       </div>
     </div>
@@ -115,7 +117,7 @@
 <script setup>
 import api from '../api'
 
-const loading = ref(false), saving = ref(false), savingPreview = ref(false), publishing = ref(false), pendingCount = ref(0)
+const loading = ref(false), saving = ref(false), savingPreview = ref(false), publishing = ref(false), discarding = ref(false), pendingCount = ref(0)
 const sites = ref([]), editSiteId = ref(''), editorJson = ref('{}'), jsonError = ref(false), originalJson = ref('')
 const snapshotStatus = ref(null)
 const form = reactive({ siteId:'', namesStr:'', urlsStr:'', tagsStr:'', desc:'', siteType:'nexusphp', status:'active' })
@@ -197,6 +199,22 @@ const publishSite = async () => {
   finally { publishing.value = false }
 }
 
+const resetEditor = () => {
+  editorJson.value = originalJson.value
+  ElMessage.success('已重置到上次保存的状态')
+}
+
+const discardDraft = async () => {
+  try { await ElMessageBox.confirm('确认丢弃预览版？将回退到正式版。', '丢弃预览版', {confirmButtonText:'确认丢弃',type:'warning'}) } catch { return }
+  discarding.value = true
+  try {
+    await api.raw.post('/admin/sites/' + editSiteId.value + '/discard-draft')
+    ElMessage.success('预览版已丢弃，当前为正式版')
+    fetchSnapshotStatus()
+  } catch { ElMessage.error('丢弃预览版失败') }
+  finally { discarding.value = false }
+}
+
 const saveSite = async () => {
   saving.value = true
   try {