diff --git a/pkg/agent/loop.go b/pkg/agent/loop.go
index 87d72b116..879db8d45 100644
--- a/pkg/agent/loop.go
+++ b/pkg/agent/loop.go
@@ -186,9 +186,10 @@ func (al *AgentLoop) Run(ctx context.Context) error {
 		if response, handled := al.handleCommand(ctx, msg); handled {
 			if response != "" {
 				al.bus.PublishOutbound(bus.OutboundMessage{
-					Channel: msg.Channel,
-					ChatID:  msg.ChatID,
-					Content: response,
+					Channel:         msg.Channel,
+					ChatID:          msg.ChatID,
+					Content:         response,
+					SkipPlaceholder: true,
 				})
 			}
 			continue
diff --git a/pkg/agent/loop_test.go b/pkg/agent/loop_test.go
index 8abc2f142..fb8de7a15 100644
--- a/pkg/agent/loop_test.go
+++ b/pkg/agent/loop_test.go
@@ -798,6 +798,57 @@ func TestResolveProvider_EmptyNameReturnsFallback(t *testing.T) {
 	}
 }
 
+// TestSlashCommandResponseSkipsPlaceholder verifies that slash command responses
+// are published with SkipPlaceholder=true so they don't overwrite the ongoing task
+// status bubble.
+func TestSlashCommandResponseSkipsPlaceholder(t *testing.T) {
+	tmpDir, err := os.MkdirTemp("", "agent-test-*")
+	if err != nil {
+		t.Fatalf("Failed to create temp dir: %v", err)
+	}
+	defer os.RemoveAll(tmpDir)
+
+	cfg := &config.Config{
+		Agents: config.AgentsConfig{
+			Defaults: config.AgentDefaults{
+				Workspace:         tmpDir,
+				Model:             "test-model",
+				MaxTokens:         4096,
+				MaxToolIterations: 10,
+			},
+		},
+	}
+
+	msgBus := bus.NewMessageBus()
+	provider := &mockProvider{}
+	al := NewAgentLoop(cfg, msgBus, provider)
+
+	ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
+	defer cancel()
+
+	go func() {
+		_ = al.Run(ctx)
+	}()
+
+	// Send a slash command
+	msgBus.PublishInbound(bus.InboundMessage{
+		Channel:  "telegram",
+		SenderID: "user1",
+		ChatID:   "chat1",
+		Content:  "/todo",
+	})
+
+	// Read the outbound message
+	outMsg, ok := msgBus.SubscribeOutbound(ctx)
+	if !ok {
+		t.Fatal("expected outbound message from slash command")
+	}
+
+	if !outMsg.SkipPlaceholder {
+		t.Errorf("expected SkipPlaceholder=true for slash command response, got false")
+	}
+}
+
 func TestBuildTaskReminder_Truncation(t *testing.T) {
 	// Build a long message (1000 runes)
 	longMsg := strings.Repeat("あ", 1000)
diff --git a/pkg/bus/types.go b/pkg/bus/types.go
index 84f9458ed..debe1fc57 100644
--- a/pkg/bus/types.go
+++ b/pkg/bus/types.go
@@ -11,10 +11,11 @@ type InboundMessage struct {
 }
 
 type OutboundMessage struct {
-	Channel  string `json:"channel"`
-	ChatID   string `json:"chat_id"`
-	Content  string `json:"content"`
-	IsStatus bool   `json:"is_status,omitempty"`
+	Channel         string `json:"channel"`
+	ChatID          string `json:"chat_id"`
+	Content         string `json:"content"`
+	IsStatus        bool   `json:"is_status,omitempty"`
+	SkipPlaceholder bool   `json:"skip_placeholder,omitempty"`
 }
 
 type MessageHandler func(InboundMessage) error
diff --git a/pkg/channels/telegram.go b/pkg/channels/telegram.go
index 130e1812c..ce05fb149 100644
--- a/pkg/channels/telegram.go
+++ b/pkg/channels/telegram.go
@@ -185,31 +185,34 @@ func (c *TelegramChannel) Send(ctx context.Context, msg bus.OutboundMessage) err
 		return fmt.Errorf("invalid chat ID: %w", err)
 	}
 
-	// Stop thinking animation
-	if stop, ok := c.stopThinking.Load(msg.ChatID); ok {
-		if cf, ok := stop.(*thinkingCancel); ok && cf != nil {
-			cf.Cancel()
-		}
-		c.stopThinking.Delete(msg.ChatID)
-	}
-
 	cleanContent := sanitizeTelegramOutgoingContent(msg.Content)
 	chunks := utils.SplitMessage(cleanContent, telegramMaxMessageChars)
 	if len(chunks) == 0 {
 		chunks = []string{cleanContent}
 	}
 
-	// Try to edit placeholder
+	// Slash-command responses (SkipPlaceholder=true) must not touch the
+	// stopThinking/placeholders state that belongs to the ongoing LLM task.
 	firstChunkSent := false
-	if pID, ok := c.placeholders.Load(msg.ChatID); ok {
-		c.placeholders.Delete(msg.ChatID)
-		editMsg := tu.EditMessageText(tu.ID(chatID), pID.(int), markdownToTelegramHTML(chunks[0]))
-		editMsg.ParseMode = telego.ModeHTML
-
-		if _, err = c.bot.EditMessageText(ctx, editMsg); err == nil {
-			firstChunkSent = true
+	if !msg.SkipPlaceholder {
+		// Stop thinking animation
+		if stop, ok := c.stopThinking.Load(msg.ChatID); ok {
+			if cf, ok := stop.(*thinkingCancel); ok && cf != nil {
+				cf.Cancel()
+			}
+			c.stopThinking.Delete(msg.ChatID)
+		}
+
+		if pID, ok := c.placeholders.Load(msg.ChatID); ok {
+			c.placeholders.Delete(msg.ChatID)
+			editMsg := tu.EditMessageText(tu.ID(chatID), pID.(int), markdownToTelegramHTML(chunks[0]))
+			editMsg.ParseMode = telego.ModeHTML
+
+			if _, err = c.bot.EditMessageText(ctx, editMsg); err == nil {
+				firstChunkSent = true
+			}
+			// Fallback to new message if edit fails
 		}
-		// Fallback to new message if edit fails
 	}
 
 	sendChunk := func(text string) error {
@@ -472,7 +475,9 @@ func (c *TelegramChannel) handleQuickCommand(ctx context.Context, message telego
 		"peer_id":    peerID,
 	}
 
-	// No "Thinking..." placeholder — send directly via message bus
+	// No "Thinking..." placeholder — send directly via message bus.
+	// SkipPlaceholder=true on the outbound message prevents Send() from
+	// touching the ongoing task's stopThinking/placeholders state.
 	c.HandleMessage(fmt.Sprintf("%d", user.ID), fmt.Sprintf("%d", chatID), content, nil, metadata)
 	return nil
 }
diff --git a/pkg/channels/telegram_test.go b/pkg/channels/telegram_test.go
index 6afcc1ff9..e4291e035 100644
--- a/pkg/channels/telegram_test.go
+++ b/pkg/channels/telegram_test.go
@@ -86,3 +86,13 @@ func TestDisplayWidth_EmojiIsThree(t *testing.T) {
 		t.Fatalf("displayWidth(stars) = %d, want 15", got)
 	}
 }
+
+func TestParseChatID_Plain(t *testing.T) {
+	id, err := parseChatID("123456789")
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if id != 123456789 {
+		t.Errorf("expected 123456789, got %d", id)
+	}
+}