fix: add missing confirmations to command handlers for consistency

All /setrate, /setcurrency, /settimezone, /setbreak, /setusername,
/setreporttime now send a confirmation message, matching the UI flow.
Also fixes rate confirmation to show the actual currency symbol.

internal/handler/settings.go

@@ -445,6 +445,12 @@ func (h *Handler) handleSetRate(ctx context.Context, msg *models.Message, user *
 		return
 	}
 	h.saveRate(ctx, msg.Chat.ID, user, rate)
+	st, _ := h.Repo.GetOrCreateSettings(user.ID)
+	sym := "$"
+	if st != nil && st.Currency != "" {
+		sym = domain.CurrencySymbol(st.Currency)
+	}
+	h.sendText(ctx, msg.Chat.ID, fmt.Sprintf("Hourly rate set to %s%.2f", sym, rate))
 }
 
 func (h *Handler) handleSetCurrency(ctx context.Context, msg *models.Message, user *domain.User) {
@@ -460,6 +466,7 @@ func (h *Handler) handleSetCurrency(ctx context.Context, msg *models.Message, us
 		return
 	}
 	h.saveCurrency(ctx, msg.Chat.ID, user, currency)
+	h.sendText(ctx, msg.Chat.ID, fmt.Sprintf("Currency set to: %s", currency))
 }
 
 func (h *Handler) handleSetTimezone(ctx context.Context, msg *models.Message, user *domain.User) {
@@ -474,6 +481,9 @@ func (h *Handler) handleSetTimezone(ctx context.Context, msg *models.Message, us
 		return
 	}
 	h.saveTimezone(ctx, msg.Chat.ID, user, args)
+	loc := h.loadLocation(args)
+	now := time.Now().In(loc).Format(domain.TimeLayout)
+	h.sendText(ctx, msg.Chat.ID, fmt.Sprintf("Timezone set to %s (current time: %s)", args, now))
 }
 
 func (h *Handler) handleSetBreak(ctx context.Context, msg *models.Message, user *domain.User) {
@@ -489,6 +499,7 @@ func (h *Handler) handleSetBreak(ctx context.Context, msg *models.Message, user
 		return
 	}
 	h.saveBreakThreshold(ctx, msg.Chat.ID, user, mins)
+	h.sendText(ctx, msg.Chat.ID, fmt.Sprintf("Break threshold set to %d minutes.", mins))
 }
 
 func (h *Handler) handleSetUsername(ctx context.Context, msg *models.Message, user *domain.User) {
@@ -499,6 +510,7 @@ func (h *Handler) handleSetUsername(ctx context.Context, msg *models.Message, us
 		return
 	}
 	h.saveUsername(ctx, msg.Chat.ID, user, name)
+	h.sendText(ctx, msg.Chat.ID, fmt.Sprintf("Username set to: %s", name))
 }
 
 func (h *Handler) handleSetReportTime(ctx context.Context, msg *models.Message, user *domain.User) {
@@ -515,7 +527,9 @@ func (h *Handler) handleSetReportTime(ctx context.Context, msg *models.Message,
 	}
 	if err := h.validateAndSaveReportTime(ctx, msg.Chat.ID, user, args); err != nil {
 		h.sendText(ctx, msg.Chat.ID, err.Error())
+		return
 	}
+	h.sendText(ctx, msg.Chat.ID, fmt.Sprintf("Report time set to %s", args))
 }
 
 func (h *Handler) handleSetAccent(ctx context.Context, msg *models.Message, user *domain.User) {
@@ -562,8 +576,13 @@ func (h *Handler) processRateInput(ctx context.Context, msg *models.Message, use
 	}
 	h.saveRate(ctx, msg.Chat.ID, user, rate)
 	backKB := settingsBackKeyboard()
+	st, _ := h.Repo.GetOrCreateSettings(user.ID)
+	sym := "$"
+	if st != nil && st.Currency != "" {
+		sym = domain.CurrencySymbol(st.Currency)
+	}
 	h.editText(ctx, msg.Chat.ID, pi.MsgID,
-		fmt.Sprintf("Hourly rate set to %s%.2f", domain.CurrencySymbol(""), rate), &backKB)
+		fmt.Sprintf("Hourly rate set to %s%.2f", sym, rate), &backKB)
 }
 
 func (h *Handler) processCurrencyInput(ctx context.Context, msg *models.Message, user *domain.User, pi *PendingInput, text string) {