feat: add /summary, /setbreak, weekly totals, and fix command dispatch for arg-bearing commands

- Add /summary [YYYY-MM] command for monthly work/break/day-off totals

- Add weekly totals row to main menu status

- Add /setbreak <minutes> for configurable daily break threshold

- Fix HandleMessage routing: extract command name instead of exact match (fixes /export YYYY-MM, /edit, /note, /summary, /setbreak)

- Update README with full command table and configurable break docs

internal/bot/settings.go

@@ -95,6 +95,43 @@ func (h *Handler) handleSetTimezone(ctx context.Context, msg *models.Message) {
 	h.sendText(ctx, msg.Chat.ID, fmt.Sprintf("Timezone set to %s (current time: %s)", args, now.Format("15:04")))
 }
 
+// handleSetBreakMsg sets the minimum break threshold for today.
+func (h *Handler) handleSetBreakMsg(ctx context.Context, msg *models.Message) {
+	args := strings.TrimSpace(strings.TrimPrefix(msg.Text, "/setbreak"))
+	if args == "" {
+		_, day, err := h.getUserToday(msg.Chat.ID)
+		if err != nil {
+			h.sendText(ctx, msg.Chat.ID, "Error loading profile")
+			return
+		}
+		h.sendText(ctx, msg.Chat.ID, fmt.Sprintf("Current break threshold: %dm\nUsage: /setbreak <minutes> (e.g. /setbreak 15)", day.MinBreakThreshold/60))
+		return
+	}
+	mins, err := strconv.Atoi(args)
+	if err != nil || mins < 0 || mins > 480 {
+		h.sendText(ctx, msg.Chat.ID, "Invalid value. Must be between 0 and 480 minutes (8 hours).")
+		return
+	}
+	user, err := h.getOrCreateUser(msg.Chat.ID)
+	if err != nil {
+		h.sendText(ctx, msg.Chat.ID, "Error loading profile")
+		return
+	}
+	now := time.Now()
+	date := now.Format("2006-01-02")
+	day, err := h.DB.GetOrCreateDay(user.ID, date)
+	if err != nil {
+		h.sendText(ctx, msg.Chat.ID, "Error updating break threshold")
+		return
+	}
+	day.MinBreakThreshold = int64(mins) * 60
+	if err := h.DB.UpdateDay(day); err != nil {
+		h.sendText(ctx, msg.Chat.ID, "Error saving break threshold")
+		return
+	}
+	h.sendText(ctx, msg.Chat.ID, fmt.Sprintf("Break threshold set to %d minutes", mins))
+}
+
 // settingsCallback shows the settings inline menu.
 func (h *Handler) settingsCallback(ctx context.Context, chatID int64, msgID int, callbackID string) {
 	h.answerCb(ctx, callbackID)