fix: sync support private chat content protection

internal/app/help/service.go

@@ -56,8 +56,9 @@ const tdesktopClient = "tdesktop"
 // WebK directly calls Array.some on fragment_prefixes while rendering user profiles,
 // so this compatibility key must always remain an array, even when it is empty.
 const tdesktopDefaultAppConfigBase = `{"chat_read_mark_expire_period":604800,"chat_read_mark_size_threshold":50,"pm_read_date_expire_period":604800,"quote_length_max":1024,"telegram_antispam_group_size_min":200,"telegram_antispam_user_id":"5434988373","fragment_prefixes":["888"],"forum_upgrade_participants_min":2,"reactions_default":{"_":"reactionEmoji","emoticon":"👍"},"reactions_uniq_max":11,"reactions_user_max_default":1,"reactions_user_max_premium":3,"reactions_in_chat_max":3,"boosts_channel_level_max":100,"rich_message_posting":"enabled","upload_markup_video":true,"emojies_send_dice":["🎲","🎯","🏀","⚽","⚽️","🎳","🎰"],"premium_purchase_blocked":false,"stars_purchase_blocked":false,"stargifts_blocked":false,"stargifts_pinned_to_top_limit":6,"stories_stealth_future_period":1500,"stories_stealth_past_period":300,"stories_stealth_cooldown_period":10800,"quick_replies_limit":100,"quick_reply_messages_limit":20,"business_chat_links_limit":100,"dialog_filters_enabled":true,"chatlist_update_period":3600,"chatlist_invites_limit_default":3,"chatlist_invites_limit_premium":20,"chatlists_joined_limit_default":2,"chatlists_joined_limit_premium":20,"about_length_limit_default":70,"about_length_limit_premium":140,"bot_verification_description_length_limit":70,"caption_length_limit_default":1024,"caption_length_limit_premium":4096,"channels_limit_default":500,"channels_limit_premium":1000,"channels_public_limit_default":10,"channels_public_limit_premium":20,"dialog_filters_limit_default":10,"dialog_filters_limit_premium":20,"dialog_filters_chats_limit_default":100,"dialog_filters_chats_limit_premium":200,"dialogs_pinned_limit_default":5,"dialogs_pinned_limit_premium":10,"dialogs_folder_pinned_limit_default":100,"dialogs_folder_pinned_limit_premium":200,"saved_dialogs_pinned_limit_default":5,"saved_dialogs_pinned_limit_premium":100,"saved_gifs_limit_default":200,"saved_gifs_limit_premium":400,"stickers_faved_limit_default":5,"stickers_faved_limit_premium":10,"recommended_channels_limit_default":10,"recommended_channels_limit_premium":100,"aicompose_tone_examples_num":3,"aicompose_tone_title_length_max":12,"aicompose_tone_prompt_length_max":1024,"aicompose_tone_saved_limit_default":5,"aicompose_tone_saved_limit_premium":20,"upload_max_fileparts_default":4000,"upload_max_fileparts_premium":8000`
+const tdesktopNoForwardsAppConfig = `,"no_forwards_request_expire_period":86400`
 
-const defaultAppConfigHash = 25 // 默认 app config 内容变更时必须递增，否则缓存端只会收到 notModified。
+const defaultAppConfigHash = 26 // 默认 app config 内容变更时必须递增，否则缓存端只会收到 notModified。
 
 // Service 提供客户端启动配置与国家区号目录。
 //
@@ -117,14 +118,14 @@ func defaultAppConfig(mapboxToken string) domain.AppConfig {
 
 func defaultAppConfigJSON(mapboxToken string) []byte {
 	if mapboxToken == "" {
-		return []byte(tdesktopDefaultAppConfigBase + `}`)
+		return []byte(tdesktopDefaultAppConfigBase + tdesktopNoForwardsAppConfig + `}`)
 	}
 	token, err := json.Marshal(mapboxToken)
 	if err != nil {
-		return []byte(tdesktopDefaultAppConfigBase + `}`)
+		return []byte(tdesktopDefaultAppConfigBase + tdesktopNoForwardsAppConfig + `}`)
 	}
 	tokenJSON := string(token)
-	return []byte(tdesktopDefaultAppConfigBase + `,"tdesktop_config_map":{"maps":` + tokenJSON + `,"geo":` + tokenJSON + `,"bmaps":` + tokenJSON + `,"bgeo":` + tokenJSON + `}}`)
+	return []byte(tdesktopDefaultAppConfigBase + tdesktopNoForwardsAppConfig + `,"tdesktop_config_map":{"maps":` + tokenJSON + `,"geo":` + tokenJSON + `,"bmaps":` + tokenJSON + `,"bgeo":` + tokenJSON + `}}`)
 }
 
 func defaultAppConfigHashFor(mapboxToken string) int {

internal/app/help/service_premium_test.go

@@ -4,6 +4,8 @@ import (
 	"context"
 	"encoding/json"
 	"testing"
+
+	"telesrv/internal/domain"
 )
 
 // TestAppConfigPremiumKeys 断言 premium / Stars 相关 key 完整下发且 hash 已递增：
@@ -26,6 +28,9 @@ func TestAppConfigPremiumKeys(t *testing.T) {
 	if err := json.Unmarshal(cfg.JSON, &decoded); err != nil {
 		t.Fatalf("app config json invalid: %v", err)
 	}
+	if period, ok := decoded["no_forwards_request_expire_period"].(float64); !ok || int(period) != domain.PrivateNoForwardsRequestExpirePeriod {
+		t.Fatalf("no_forwards_request_expire_period = %v, want %d", decoded["no_forwards_request_expire_period"], domain.PrivateNoForwardsRequestExpirePeriod)
+	}
 	if blocked, ok := decoded["premium_purchase_blocked"].(bool); !ok || blocked {
 		t.Fatalf("premium_purchase_blocked = %v, want false (star gift 送礼入口耦合此 flag)", decoded["premium_purchase_blocked"])
 	}

internal/app/messages/service.go

@@ -222,6 +222,42 @@ func (s *Service) SetChatTheme(ctx context.Context, userID int64, req domain.Set
 	return out, nil
 }
 
+// GetPrivateNoForwards returns the canonical content-protection state for one
+// ordinary private chat.
+func (s *Service) GetPrivateNoForwards(ctx context.Context, userID, peerUserID int64) (domain.PrivateNoForwardsState, error) {
+	if s == nil || s.messages == nil || userID == 0 || peerUserID == 0 || userID == peerUserID {
+		return domain.PrivateNoForwardsState{}, domain.ErrMessageIDInvalid
+	}
+	backend, ok := s.messages.(store.PrivateNoForwardsStore)
+	if !ok {
+		return domain.PrivateNoForwardsState{}, nil
+	}
+	return backend.GetPrivateNoForwards(ctx, userID, peerUserID)
+}
+
+// TogglePrivateNoForwards atomically mutates the pair state and appends the
+// corresponding service message when the official state machine requires one.
+func (s *Service) TogglePrivateNoForwards(ctx context.Context, userID int64, req domain.TogglePrivateNoForwardsRequest) (domain.TogglePrivateNoForwardsResult, error) {
+	if s == nil || s.messages == nil || userID == 0 {
+		return domain.TogglePrivateNoForwardsResult{}, domain.ErrMessageIDInvalid
+	}
+	if req.ActorUserID == 0 {
+		req.ActorUserID = userID
+	}
+	if req.ActorUserID != userID || req.PeerUserID == 0 || req.PeerUserID == userID ||
+		req.RequestMsgID < 0 || req.RequestMsgID > domain.MaxMessageBoxID {
+		return domain.TogglePrivateNoForwardsResult{}, domain.ErrMessageIDInvalid
+	}
+	if err := s.ensureCanSend(ctx, userID); err != nil {
+		return domain.TogglePrivateNoForwardsResult{}, err
+	}
+	backend, ok := s.messages.(store.PrivateNoForwardsStore)
+	if !ok {
+		return domain.TogglePrivateNoForwardsResult{}, domain.ErrMessageIDInvalid
+	}
+	return backend.TogglePrivateNoForwards(ctx, req)
+}
+
 func chatThemeServiceMedia(emoticon string) *domain.MessageMedia {
 	return &domain.MessageMedia{
 		Kind: domain.MessageMediaKindService,