Improve Telegram keyboards and fix admin user menu navigation

Unified inline menus, user callbacks for all users, Home button to exit admin panel.

Co-authored-by: Cursor <cursoragent@cursor.com>

internal/bot/keyboards.go

@@ -0,0 +1,108 @@
+package bot
+
+import (
+	"fmt"
+
+	"telegramvpn/internal/config"
+
+	tgbotapi "github.com/go-telegram-bot-api/telegram-bot-api/v5"
+)
+
+const (
+	cbUserConfig = "user:config"
+	cbUserHome   = "user:home"
+	cbAdminMenu  = "admin:menu"
+	cbAdminUser  = "admin:user"
+	cbAdminSquads = "admin:squads"
+	cbAdminCheck = "admin:check"
+	cbAdminConfig = "admin:config"
+)
+
+func trialDays(cfg *config.Config) int {
+	d := cfg.TrialUserDays
+	if d <= 0 {
+		return 1
+	}
+	return d
+}
+
+func userConfigLabel(cfg *config.Config) string {
+	return fmt.Sprintf("🔐 Подключить VPN · %d дн.", trialDays(cfg))
+}
+
+func userHomeLabel() string {
+	return "🏠 Главная"
+}
+
+func adminPanelLabel() string {
+	return "🛠 Админ-панель"
+}
+
+// userMenuKeyboard — главное меню пользователя (и выход из админки).
+func userMenuKeyboard(cfg *config.Config, userID, adminID int64) tgbotapi.InlineKeyboardMarkup {
+	rows := [][]tgbotapi.InlineKeyboardButton{
+		tgbotapi.NewInlineKeyboardRow(
+			tgbotapi.NewInlineKeyboardButtonData(userConfigLabel(cfg), cbUserConfig),
+		),
+	}
+	if userID == adminID {
+		rows = append(rows, tgbotapi.NewInlineKeyboardRow(
+			tgbotapi.NewInlineKeyboardButtonData(adminPanelLabel(), cbAdminMenu),
+		))
+	}
+	return tgbotapi.NewInlineKeyboardMarkup(rows...)
+}
+
+// configResultKeyboard — после выдачи конфига: ссылка + возврат в меню.
+func configResultKeyboard(cfg *config.Config, userID, adminID int64, subscriptionURL string) tgbotapi.InlineKeyboardMarkup {
+	var rows [][]tgbotapi.InlineKeyboardButton
+	if subscriptionURL != "" {
+		rows = append(rows, tgbotapi.NewInlineKeyboardRow(
+			tgbotapi.NewInlineKeyboardButtonURL("🔗 Открыть подписку", subscriptionURL),
+		))
+	}
+	rows = append(rows,
+		tgbotapi.NewInlineKeyboardRow(
+			tgbotapi.NewInlineKeyboardButtonData(userConfigLabel(cfg), cbUserConfig),
+		),
+		tgbotapi.NewInlineKeyboardRow(
+			tgbotapi.NewInlineKeyboardButtonData(userHomeLabel(), cbUserHome),
+		),
+	)
+	if userID == adminID {
+		rows = append(rows, tgbotapi.NewInlineKeyboardRow(
+			tgbotapi.NewInlineKeyboardButtonData(adminPanelLabel(), cbAdminMenu),
+		))
+	}
+	return tgbotapi.NewInlineKeyboardMarkup(rows...)
+}
+
+// adminMenuKeyboard — панель администратора.
+func adminMenuKeyboard() tgbotapi.InlineKeyboardMarkup {
+	return tgbotapi.NewInlineKeyboardMarkup(
+		tgbotapi.NewInlineKeyboardRow(
+			tgbotapi.NewInlineKeyboardButtonData("👤 Новый пользователь", cbAdminUser),
+			tgbotapi.NewInlineKeyboardButtonData("📡 Сквады", cbAdminSquads),
+		),
+		tgbotapi.NewInlineKeyboardRow(
+			tgbotapi.NewInlineKeyboardButtonData("🔌 Проверка API", cbAdminCheck),
+			tgbotapi.NewInlineKeyboardButtonData("⚙️ Настройки", cbAdminConfig),
+		),
+		tgbotapi.NewInlineKeyboardRow(
+			tgbotapi.NewInlineKeyboardButtonURL("📖 Remnawave Docs", docsURL),
+		),
+		tgbotapi.NewInlineKeyboardRow(
+			tgbotapi.NewInlineKeyboardButtonData(userHomeLabel(), cbUserHome),
+		),
+	)
+}
+
+// adminContextKeyboard — под ответами админки (проверка, конфиг и т.д.).
+func adminContextKeyboard() tgbotapi.InlineKeyboardMarkup {
+	return tgbotapi.NewInlineKeyboardMarkup(
+		tgbotapi.NewInlineKeyboardRow(
+			tgbotapi.NewInlineKeyboardButtonData("🛠 В админ-панель", cbAdminMenu),
+			tgbotapi.NewInlineKeyboardButtonData(userHomeLabel(), cbUserHome),
+		),
+	)
+}