Fork Stalwart WebUI v1.0.11 as INBUXA Admin

- One edition: whatever edition the server reports, nothing is hidden or
  disabled as Enterprise-only (accountStore.setAccountInfo).
- INBUXA branding: name, logo (mark plus a text-colored wordmark), favicon,
  page titles, setup wizard text, and ihasmail's palette in light and dark.
- Two-factor setup names INBUXA as the issuer and drops the image parameter
  that made authenticator apps fetch a logo from a third-party site.
- Runs apart from the server: the server address can be set at deploy time
  with <meta name="api-base-url">, and OAuth endpoints the server returns as
  relative paths are resolved against the server's address, not the page's.
  Verified end to end against a separate inbuxa-server.
- Upstream's release workflow moved to .github-upstream so it never runs.

Upstream's history contains no Enterprise-only code, so this is an ordinary
fork. upstream is a fetch-only remote.

src/components/bootstrap/BootstrapWizard.tsx

@@ -333,7 +333,7 @@ export function BootstrapWizard() {
     <WizardShell>
       <div className="space-y-6">
         <div>
-          <h2 className="text-2xl font-semibold tracking-tight">{t('bootstrap.welcome', 'Welcome to Stalwart')}</h2>
+          <h2 className="text-2xl font-semibold tracking-tight">{t('bootstrap.welcome', 'Welcome to INBUXA')}</h2>
           <p className="text-sm text-muted-foreground mt-1">
             {t('bootstrap.welcomeSubtitle', "Let's get your server set up.")}
           </p>
@@ -468,7 +468,7 @@ function SuccessScreen({
                   'bootstrap.credentialsCreated',
                   'Your administrator account has been created. Write these down now: the password will not be shown again.',
                 )
-              : t('bootstrap.configuredSuccessfully', 'Stalwart has been configured successfully.')}
+              : t('bootstrap.configuredSuccessfully', 'INBUXA has been configured successfully.')}
           </p>
         </div>
       </div>
@@ -500,7 +500,7 @@ function SuccessScreen({
           <span className="font-medium">{t('bootstrap.nextStepLabel', 'Next step:')}</span>{' '}
           {t(
             'bootstrap.nextStepBody',
-            'restart Stalwart for the new configuration to take effect. Once restarted, sign in with the credentials above to continue administering your server.',
+            'restart INBUXA for the new configuration to take effect. Once restarted, sign in with the credentials above to continue administering your server.',
           )}
         </p>
       </div>