feat(admin): 添加提示词批量删除和定时同步功能

- 后端新增批量删除提示词接口和实现
- 前端管理页面添加多选和批量删除功能
- 添加定时同步GitHub远程提示词源功能
- 新增系统设置中的提示词同步配置选项
- 更新文档说明新的批量操作和定时同步功能
- 添加相关的测试用例和依赖库

service/prompt_sync_scheduler.go

@@ -0,0 +1,70 @@
+package service
+
+import (
+	"log"
+	"sync"
+
+	"github.com/basketikun/infinite-canvas/model"
+	"github.com/basketikun/infinite-canvas/repository"
+	"github.com/robfig/cron/v3"
+)
+
+const defaultPromptSyncCron = "0 3 * * *"
+
+var (
+	promptSyncCron *cron.Cron
+	promptSyncOnce sync.Once
+	promptSyncMu   sync.Mutex
+)
+
+func StartPromptSyncScheduler() {
+	promptSyncOnce.Do(func() {
+		promptSyncCron = cron.New()
+		promptSyncCron.Start()
+	})
+	RefreshPromptSyncScheduler()
+}
+
+func RefreshPromptSyncScheduler() {
+	promptSyncMu.Lock()
+	defer promptSyncMu.Unlock()
+	if promptSyncCron == nil {
+		return
+	}
+	for _, entry := range promptSyncCron.Entries() {
+		promptSyncCron.Remove(entry.ID)
+	}
+	settings, err := repository.GetSettings()
+	if err != nil {
+		log.Printf("load prompt sync setting failed err=%v", err)
+		return
+	}
+	setting := normalizePromptSyncSetting(settings.Private.PromptSync)
+	if !setting.Enabled {
+		return
+	}
+	if _, err := promptSyncCron.AddFunc(setting.Cron, SyncRemotePromptCategories); err != nil {
+		log.Printf("add prompt sync cron failed cron=%s err=%v", setting.Cron, err)
+	}
+}
+
+func SyncRemotePromptCategories() {
+	for _, category := range repository.PromptCategories() {
+		if !category.Remote {
+			continue
+		}
+		log.Printf("scheduled prompt sync start category=%s", category.Category)
+		if _, err := SyncPromptCategory(category.Category); err != nil {
+			log.Printf("scheduled prompt sync failed category=%s err=%v", category.Category, err)
+			continue
+		}
+		log.Printf("scheduled prompt sync done category=%s", category.Category)
+	}
+}
+
+func normalizePromptSyncSetting(setting model.PromptSyncSetting) model.PromptSyncSetting {
+	if setting.Cron == "" {
+		setting.Cron = defaultPromptSyncCron
+	}
+	return setting
+}

service/prompts.go

@@ -48,6 +48,13 @@ func DeletePrompt(id string) error {
 	return repository.DeletePrompt(id)
 }
 
+func DeletePrompts(ids []string) error {
+	if len(ids) == 0 {
+		return nil
+	}
+	return repository.DeletePrompts(ids)
+}
+
 func promptCategoryCodes(items []model.PromptCategory) []string {
 	codes := []string{}
 	for _, item := range items {

service/settings.go

@@ -32,6 +32,9 @@ func SaveSettings(settings model.Settings) (model.Settings, error) {
 	settings = normalizeSettings(settings)
 	keepPrivateAPIKeys(&settings, normalizeSettings(saved))
 	result, err := repository.SaveSettings(settings, now())
+	if err == nil {
+		RefreshPromptSyncScheduler()
+	}
 	return hidePrivateAPIKeys(result), err
 }
 
@@ -72,6 +75,7 @@ func normalizePrivateSetting(setting model.PrivateSetting) model.PrivateSetting
 	if setting.Channels == nil {
 		setting.Channels = []model.ModelChannel{}
 	}
+	setting.PromptSync = normalizePromptSyncSetting(setting.PromptSync)
 	for i := range setting.Channels {
 		if setting.Channels[i].Protocol == "" {
 			setting.Channels[i].Protocol = "openai"