refactor(channelbridge): 多气泡分割+旁白剥离+随机延迟上移为IM公共出口——sendReply/SendProactive统一(微信主动推送也分割)

internal/services/channelbridge/channelbridge.go

@@ -169,8 +169,12 @@ type Bridge struct {
 	engage        EngageConfig
 	engageFor     func(platform, groupID string) *EngageConfig
 	engageRand    func() float64
-	engageMu      sync.Mutex
-	engageGroups  map[string]*engageGroupState
+	// bubbleGapFn is the injectable delay between IM outbound bubbles (0.5-2s),
+	// defaulting to the package bubbleGap. Tests inject a fixed short gap so the
+	// multi-bubble delay is asserted deterministically without sleeping a real 0.5-2s.
+	bubbleGapFn  func() time.Duration
+	engageMu     sync.Mutex
+	engageGroups map[string]*engageGroupState
 
 	mu          sync.RWMutex
 	adapters    map[string]adapter.PlatformAdapter
@@ -242,6 +246,7 @@ func New(opts Options) (*Bridge, error) {
 		engage:         opts.Engage,
 		engageFor:      opts.EngageFor,
 		engageRand:     engageRand,
+		bubbleGapFn:    bubbleGap,
 		engageGroups:   make(map[string]*engageGroupState),
 		adapters:       make(map[string]adapter.PlatformAdapter),
 		connected:      make(map[string]bool),
@@ -660,7 +665,8 @@ func (b *Bridge) buildLoopMessages(_ context.Context, text string, env loop.Sess
 // sendReply delivers the loop's text back to the channel's source conversation
 // through the account adapter that received the message (multi-account safe,
 // design/16 §4.6 §5). It mirrors the inbound message's channel targeting fields so
-// the adapter resolves the same peer the message came from.
+// the adapter resolves the same peer the message came from, and it exits through the
+// shared IM bubble dispatcher (strip role-play/narration + <p> split + 0.5-2s gap).
 func (b *Bridge) sendReply(ctx context.Context, in adapter.UnifiedMessage, a adapter.PlatformAdapter, text string) error {
 	if a == nil {
 		a = b.adapter(in.Platform)
@@ -668,38 +674,9 @@ func (b *Bridge) sendReply(ctx context.Context, in adapter.UnifiedMessage, a ada
 	if a == nil {
 		return fmt.Errorf("channelbridge: no adapter for platform %q", in.Platform)
 	}
-	// IM channels receive the reply as one or more bubbles: role-play/action/narration
-	// markup (rendered as muted italic on the Web) is stripped, and each <p> paragraph
-	// becomes its own bubble/message (design/17 §2). A reply that was only an action is
-	// dropped rather than sent empty. A multi-bubble reply spaces its sends 0.5-2s apart
-	// so a burst doesn't flood the channel; the Web frontend has no such delay.
-	bubbles := splitBubbles(text)
-	if len(bubbles) == 0 {
-		b.log.Debug("reply has no plain text, skipped", "platform", in.Platform, "channel", in.ChannelID)
-		return nil
-	}
-	for i, content := range bubbles {
-		if i > 0 {
-			time.Sleep(bubbleGap())
-		}
-		out := adapter.UnifiedMessage{
-			Platform:    in.Platform,
-			ChannelType: in.ChannelType,
-			ChannelID:   in.ChannelID,
-			GroupID:     in.GroupID,
-			GroupName:   in.GroupName,
-			SenderID:    in.SenderID,
-			Sender:      in.Sender,
-			Content:     content,
-			ContentType: adapter.ContentText,
-			Timestamp:   time.Now().UTC(),
-		}
-		// Each bubble is its own send so the gap lands between messages.
-		if err := a.SendMessage(ctx, adapter.UnifiedResponse{Messages: []adapter.UnifiedMessage{out}}); err != nil {
-			return fmt.Errorf("channelbridge: send bubble #%d of %d: %w", i+1, len(bubbles), err)
-		}
-	}
-	return nil
+	return b.sendIMBubbles(ctx, in, func(ctx context.Context, msg adapter.UnifiedMessage) error {
+		return a.SendMessage(ctx, adapter.UnifiedResponse{Messages: []adapter.UnifiedMessage{msg}})
+	}, text)
 }
 
 // adapter returns the registered adapter for a platform name, or nil.