Cut over-engineering found by a repo-wide audit

- Config: auth, services, logging, queue and database only repeated the
  framework's own files and are gone; the others keep only the keys that
  differ (app version, cache serializable_classes, session cookie name,
  Markdown mail theme, the shares disk, three Octane values, Livewire's
  pagination theme and payload guards).
- Email verification is removed: User never implemented MustVerifyEmail,
  so it was never enforced, and SealShare has a single admin and no
  registration. CreateNewUser goes with it.
- FileEncryptionService::encryptFile() and generateSalt() were only used
  by tests; tests build files with encryptTestFile() in tests/Pest.php.
- The expiration options are defined once, as Share::EXPIRATIONS. "30 Days"
  now lasts 30 days instead of a calendar month, and Admin settings only
  save a default expiration that is one of the options.
- One-caller helpers are inlined, the uploader reads chunk responses with
  XHR's responseType, and starter-kit leftovers are removed.
- Docker: PHP reads the PHP_* limits from the environment itself
  (${VAR:-default} in uploads.ini); both entrypoints stop writing the ini.
  docker-compose.yml shares the app and scheduler variables through one
  anchor. The dev image installs gd for the screenshot publisher and fake
  test images.
- Development runs in Docker only: the composer dev script, concurrently,
  laravel/pail, laravel/sail, autoprefixer and the shell-quote override
  are gone.
- phpunit.xml forces the test environment with <server> entries, so tests
  run in the dev container no longer use its real database.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

app/Providers/FortifyServiceProvider.php

@@ -2,7 +2,6 @@
 
 namespace App\Providers;
 
-use App\Actions\Fortify\CreateNewUser;
 use App\Actions\Fortify\ResetUserPassword;
 use Illuminate\Cache\RateLimiting\Limit;
 use Illuminate\Http\Request;
@@ -13,14 +12,6 @@ use Laravel\Fortify\Fortify;
 
 class FortifyServiceProvider extends ServiceProvider
 {
-    /**
-     * Register any application services.
-     */
-    public function register(): void
-    {
-        //
-    }
-
     /**
      * Bootstrap any application services.
      */
@@ -37,7 +28,6 @@ class FortifyServiceProvider extends ServiceProvider
     private function configureActions(): void
     {
         Fortify::resetUserPasswordsUsing(ResetUserPassword::class);
-        Fortify::createUsersUsing(CreateNewUser::class);
     }
 
     /**
@@ -46,7 +36,6 @@ class FortifyServiceProvider extends ServiceProvider
     private function configureViews(): void
     {
         Fortify::loginView(fn () => view('pages::auth.login'));
-        Fortify::verifyEmailView(fn () => view('pages::auth.verify-email'));
         Fortify::twoFactorChallengeView(fn () => view('pages::auth.two-factor-challenge'));
         Fortify::confirmPasswordView(fn () => view('pages::auth.confirm-password'));
         Fortify::resetPasswordView(fn () => view('pages::auth.reset-password'));