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]>

internal/db/repos/settingsrepo/meeting_integration_test.go

@@ -117,3 +117,66 @@ func TestMeetingLobbiesConcurrent(t *testing.T) {
 		t.Errorf("have %d lobbies, want %d", len(ids), MaxMeetingLobbies)
 	}
 }
+
+func TestGetBetaSettings(t *testing.T) {
+	r, _ := testRepo(t)
+	db := r.db
+	ctx := context.Background()
+	_, err := db.ExecContext(ctx, `CREATE TABLE IF NOT EXISTS beta_settings (
+		id BOOLEAN PRIMARY KEY DEFAULT TRUE CHECK (id), guild_id BIGINT, role_id BIGINT, updated_by BIGINT,
+		updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW())`)
+	if err != nil {
+		t.Fatal(err)
+	}
+	var wasG, wasR sql.NullInt64
+	hadRow := db.QueryRowContext(ctx, `SELECT guild_id, role_id FROM beta_settings WHERE id`).Scan(&wasG, &wasR) == nil
+	t.Cleanup(func() {
+		if hadRow {
+			_, _ = db.ExecContext(ctx, `UPDATE beta_settings SET guild_id=$1, role_id=$2 WHERE id`, wasG, wasR)
+		} else {
+			_, _ = db.ExecContext(ctx, `DELETE FROM beta_settings`)
+		}
+	})
+
+	_, err = db.ExecContext(ctx, `DELETE FROM beta_settings`)
+	if err != nil {
+		t.Fatal(err)
+	}
+	g, role, err := r.GetBetaSettings(ctx)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if g != "" {
+		t.Fatalf("g = %q, want empty", g)
+	}
+	if role != "" {
+		t.Fatalf("role = %q, want empty", role)
+	}
+
+	_, err = db.ExecContext(ctx, `INSERT INTO beta_settings (id, guild_id) VALUES (TRUE, 1170934850157547600)`)
+	if err != nil {
+		t.Fatal(err)
+	}
+	g, role, err = r.GetBetaSettings(ctx)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if g != "1170934850157547600" {
+		t.Fatalf("g = %q, want %q", g, "1170934850157547600")
+	}
+	if role != "" {
+		t.Fatalf("role = %q, want empty", role)
+	}
+
+	_, err = db.ExecContext(ctx, `UPDATE beta_settings SET role_id = 42`)
+	if err != nil {
+		t.Fatal(err)
+	}
+	_, role, err = r.GetBetaSettings(ctx)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if role != "42" {
+		t.Fatalf("role = %q, want %q", role, "42")
+	}
+}

internal/db/repos/settingsrepo/repo.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"database/sql"
 	"errors"
+	"strconv"
 
 	"github.com/jackc/pgx/v5/pgconn"
 )
@@ -401,3 +402,23 @@ func (r *Repo) SetMusicEnabled(ctx context.Context, guildID int64, enabled bool)
 	_, err := r.db.ExecContext(ctx, q, guildID, enabled)
 	return err
 }
+
+// GetBetaSettings returns the beta server and Beta Tester role as set on the
+// dashboard. Either is "" when not set (or when there's no row yet).
+func (r *Repo) GetBetaSettings(ctx context.Context) (guildID, roleID string, err error) {
+	var g, role sql.NullInt64
+	err = r.db.QueryRowContext(ctx, `SELECT guild_id, role_id FROM beta_settings WHERE id = TRUE`).Scan(&g, &role)
+	if errors.Is(err, sql.ErrNoRows) {
+		return "", "", nil
+	}
+	if err != nil {
+		return "", "", err
+	}
+	if g.Valid {
+		guildID = strconv.FormatInt(g.Int64, 10)
+	}
+	if role.Valid {
+		roleID = strconv.FormatInt(role.Int64, 10)
+	}
+	return guildID, roleID, nil
+}