feat: enforce RPG dependency for League — cannot enable League without RPG

- handleSelectCallback: disabling RPG also disables League; enabling
  League when RPG is off shows toast error via answerCbWithText
- handleLeagueToggleCmd (/leaguetoggle): rejects with message if RPG off
- leagueToggleCallback (inline): rejects with message if RPG off
- buildSettingsKeyboard: League status shows as 'off' when RPG is disabled
  (even if the DB still has LeagueOptIn=true, since RPG disable forces it false)

internal/bot/settings.go

@@ -189,7 +189,9 @@ func (h *Handler) buildSettingsKeyboard(user *db.User, st *db.UserSettings, brea
 		rpgStatus = "on"
 	}
 	leagueStatus := "off"
-	if st.LeagueOptIn {
+	if !st.RPGEnabled {
+		leagueStatus = "off"
+	} else if st.LeagueOptIn {
 		leagueStatus = "on"
 	}
 	rows := [][]models.InlineKeyboardButton{
@@ -494,13 +496,22 @@ func (h *Handler) handleRPGSettingsMsg(ctx context.Context, msg *models.Message)
 	h.sendWithKB(ctx, msg.Chat.ID, text, kb)
 }
 
-// handleLeagueSettingsMsg shows the League enable/disable picker (command).
-func (h *Handler) handleLeagueSettingsMsg(ctx context.Context, msg *models.Message) {
+// handleLeagueToggleCmd handles /leaguetoggle — checks RPG is enabled first.
+func (h *Handler) handleLeagueToggleCmd(ctx context.Context, msg *models.Message) {
 	user, err := h.getOrCreateUser(msg.Chat.ID)
 	if err != nil {
 		h.sendText(ctx, msg.Chat.ID, "Error loading profile")
 		return
 	}
+	st, err := h.DB.GetOrCreateSettings(user.ID)
+	if err != nil {
+		h.sendText(ctx, msg.Chat.ID, "Error loading settings")
+		return
+	}
+	if !st.RPGEnabled {
+		h.sendText(ctx, msg.Chat.ID, "League requires the RPG system. Enable RPG first with /rpgtoggle.")
+		return
+	}
 	text, kb := h.buildLeagueToggleKeyboard(user.ID)
 	h.sendWithKB(ctx, msg.Chat.ID, text, kb)
 }
@@ -523,6 +534,14 @@ func (h *Handler) leagueToggleCallback(ctx context.Context, chatID int64, msgID
 	if err != nil {
 		return
 	}
+	st, err := h.DB.GetOrCreateSettings(user.ID)
+	if err != nil {
+		return
+	}
+	if !st.RPGEnabled {
+		h.editText(ctx, chatID, msgID, "League requires the RPG system. Enable RPG first in Settings.", nil)
+		return
+	}
 	text, kb := h.buildLeagueToggleKeyboard(user.ID)
 	h.editText(ctx, chatID, msgID, text, &kb)
 }
@@ -646,8 +665,14 @@ func (h *Handler) handleSelectCallback(ctx context.Context, chatID int64, msgID
 		st.RPGEnabled = value
 		if value {
 			h.DB.GetOrCreateRPGStats(user.ID)
+		} else {
+			st.LeagueOptIn = false
 		}
 	case "league_enable":
+		if value && !st.RPGEnabled {
+			h.answerCbWithText(ctx, callbackID, "Enable RPG first")
+			return
+		}
 		st.LeagueOptIn = value
 	}
 	if err := h.DB.UpdateSettings(st); err != nil {