Beta server and role come from the dashboard

The owner sets them on the admin page; the bot polls the shared beta_settings
row (30s) and moves the beta commands if the server changes. BETA_* env vars
are gone.

Co-Authored-By: Claude Sonnet 5.5 <[email protected]>

main.go

@@ -1,12 +1,12 @@
 package main
 
 import (
+	"context"
 	"fmt"
 	"log"
 	"os"
 	"os/signal"
 	"syscall"
-	"velox-bot/internal/beta"
 	"velox-bot/internal/bot"
 	"velox-bot/internal/commands"
 	cmdtickets "velox-bot/internal/commands/tickets"
@@ -46,7 +46,6 @@ func main() {
 		log.Fatalf("Error loading config: %v", err)
 		return
 	}
-	beta.Configure(config.BetaGuildID, config.BetaRoleID)
 
 	db, err := db.NewDB(config)
 	if err != nil {
@@ -94,6 +93,9 @@ func main() {
 
 	defer bot.Close()
 
+	// Who the beta testers are is set on the dashboard; follow it.
+	bot.WatchBeta(context.Background(), settingsRepo.GetBetaSettings)
+
 	fmt.Println("Bot is running...")
 
 	sc := make(chan os.Signal, 1)