fix: chat UI

internal/handler/chat.go

@@ -96,6 +96,17 @@ type openDMReq struct {
 	Handle string `json:"handle"`
 }
 
+// Unread — GET /chat/unread. Drives the nav badge, so it stays a single
+// count rather than anything the caller has to aggregate.
+func (h *ChatHandler) Unread(w http.ResponseWriter, r *http.Request) {
+	n, err := h.svc.UnreadCount(r.Context(), middleware.UserID(r.Context()))
+	if err != nil {
+		writeChatError(w, err)
+		return
+	}
+	response.JSON(w, http.StatusOK, map[string]int{"count": n})
+}
+
 // OpenDM — POST /chat/conversations/dm. Idempotent: returns the existing
 // thread when there is one, so the client can call it every time it opens a
 // profile without checking first.

internal/handler/soketi_webhook.go

@@ -1,6 +1,7 @@
 package handler
 
 import (
+	"context"
 	"crypto/hmac"
 	"crypto/sha256"
 	"encoding/hex"
@@ -41,11 +42,29 @@ type SoketiWebhookHandler struct {
 	appKey    string
 	appSecret string
 	feed      *repository.FeedRepo
-	logger    *zap.Logger
+	// chat records presence so a message doesn't push to someone who is
+	// already looking at the app. Optional.
+	chat   ChatPresence
+	logger *zap.Logger
 }
 
-func NewSoketiWebhookHandler(appKey, appSecret string, feed *repository.FeedRepo, logger *zap.Logger) *SoketiWebhookHandler {
-	return &SoketiWebhookHandler{appKey: appKey, appSecret: appSecret, feed: feed, logger: logger}
+// ChatPresence is the slice of ChatService this handler needs — narrow so the
+// webhook doesn't depend on the whole chat surface.
+type ChatPresence interface {
+	MarkPresence(ctx context.Context, userID string, online bool)
+}
+
+func (h *SoketiWebhookHandler) presence(ctx context.Context, userID string, online bool) {
+	if h.chat == nil {
+		return
+	}
+	h.chat.MarkPresence(ctx, userID, online)
+}
+
+func NewSoketiWebhookHandler(appKey, appSecret string, feed *repository.FeedRepo, chat ChatPresence, logger *zap.Logger) *SoketiWebhookHandler {
+	return &SoketiWebhookHandler{
+		appKey: appKey, appSecret: appSecret, feed: feed, chat: chat, logger: logger,
+	}
 }
 
 type soketiWebhookBody struct {
@@ -91,12 +110,20 @@ func (h *SoketiWebhookHandler) Handle(w http.ResponseWriter, r *http.Request) {
 	ctx := r.Context()
 	cleared := 0
 	for _, e := range payload.Events {
-		// A per-user notifications channel emptying = that user is offline.
-		if e.Name != "channel_vacated" {
+		uid, ok := userIDFromNotifChannel(e.Channel)
+		if !ok {
 			continue
 		}
-		if uid, ok := userIDFromNotifChannel(e.Channel); ok {
+		switch e.Name {
+		case "channel_occupied":
+			// This user has a live connection, so chat push is suppressed
+			// for them — they will see the message in the app.
+			h.presence(ctx, uid, true)
+		case "channel_vacated":
+			// Their last tab closed: they are offline. Evict the feed
+			// seen-set and let chat push resume.
 			h.feed.Reset(ctx, uid)
+			h.presence(ctx, uid, false)
 			cleared++
 		}
 	}