add year navigation: year row at top of calendar, clickable year in export, shared buildYearPicker with 12-year grid

internal/bot/export.go

@@ -377,7 +377,7 @@ func (h *Handler) editExportMonthPicker(ctx context.Context, chatID int64, msgID
 		// Year navigation
 		{
 			{Text: "<", CallbackData: fmt.Sprintf("exp_year_prev_%d", year)},
-			{Text: fmt.Sprintf("%d", year), CallbackData: "noop"},
+			{Text: fmt.Sprintf("%d", year), CallbackData: fmt.Sprintf("exp_show_years_%d", year)},
 			{Text: ">", CallbackData: fmt.Sprintf("exp_year_next_%d", year)},
 		},
 	}
@@ -405,6 +405,17 @@ func (h *Handler) editExportMonthPicker(ctx context.Context, chatID int64, msgID
 	}
 }
 
+// editExportYearPicker shows a 12-year grid for year selection in the export flow.
+// refY is the year to return to via the Back button.
+func (h *Handler) editExportYearPicker(ctx context.Context, chatID int64, msgID int, centerYear, refY int) {
+	backData := fmt.Sprintf("exp_years_back_%d", refY)
+	navSuffix := fmt.Sprintf("_%d", refY)
+	kb := buildYearPicker("exp_", backData, navSuffix, centerYear)
+	h.Bot.EditMessageText(ctx, &bot.EditMessageTextParams{
+		ChatID: chatID, MessageID: msgID, Text: "Select year:", ReplyMarkup: &kb,
+	})
+}
+
 // formatMonthTitle returns the localized month name and year for a given calendar.
 func formatMonthTitle(cal string, year, month int) string {
 	switch cal {
@@ -437,6 +448,27 @@ func (h *Handler) handleExportCallback(ctx context.Context, chatID int64, msgID
 		h.editExportMonthPicker(ctx, chatID, msgID, y+1, 0, user)
 		return
 	}
+	// Show year picker from month picker
+	if n, _ := fmt.Sscanf(data, "exp_show_years_%d", &y); n == 1 {
+		h.editExportYearPicker(ctx, chatID, msgID, y, y)
+		return
+	}
+	// Navigate year block in picker
+	var refY int
+	if n, _ := fmt.Sscanf(data, "exp_years_%d_%d", &y, &refY); n == 2 {
+		h.editExportYearPicker(ctx, chatID, msgID, y+6, refY)
+		return
+	}
+	// Select year from picker
+	if n, _ := fmt.Sscanf(data, "exp_year_%d", &y); n == 1 {
+		h.editExportMonthPicker(ctx, chatID, msgID, y, 0, user)
+		return
+	}
+	// Back from year picker to month picker
+	if n, _ := fmt.Sscanf(data, "exp_years_back_%d", &y); n == 1 {
+		h.editExportMonthPicker(ctx, chatID, msgID, y, 0, user)
+		return
+	}
 
 	// Export a specific month
 	if n, _ := fmt.Sscanf(data, "exp_do_%d_%d", &y, &m); n == 2 {