Add 2FA, email + password reset, and batch-7 pages

Auth (hand-built on the auth core):
- 2FA: User model gains two_factor_secret/recovery_codes/confirmed_at (+ idempotent
  MariaDB migration). authorize() requires a valid TOTP code when 2FA is confirmed
  (secret decrypted via Laravel APP_KEY, fail-closed). Two-step login (precheckLogin
  reveals the code field). /settings/2fa enable/confirm/disable flow.
- Password reset: nodemailer email service; PasswordReset model + migration;
  /forgot (request, generic response) + /reset (token sha256 + 1h TTL, sets argon2id
  hash). Login links to forgot.

Batch 7 (parallel agents): /admin/commandocentrum (RCON controls + emulator_errors),
social write actions (friend request + guild forum new thread), /help/[category],
/badges (public). env: APP_KEY, APP_URL, SMTP_*. Nav extended.

Verified: tsc exit 0, vitest 48/48, next build exit 0 (64 page routes).

src/lib/auth/totp.ts

@@ -18,6 +18,11 @@ export function generateTotp(secret: string): string {
   return authenticator.generate(secret);
 }
 
+/** Generate a fresh base32 secret for enrolling a new authenticator. */
+export function generateTotpSecret(): string {
+  return authenticator.generateSecret();
+}
+
 /** otpauth:// URI for provisioning a QR code. */
 export function totpKeyUri(secret: string, accountName: string, issuer: string): string {
   return authenticator.keyuri(accountName, issuer, secret);