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>

config/filesystems.php

@@ -1,52 +1,19 @@
 <?php
 
+/*
+|--------------------------------------------------------------------------
+| Filesystem Disks
+|--------------------------------------------------------------------------
+|
+| The encrypted share files. Laravel merges this disk into its own default
+| disks (local, public, s3).
+|
+*/
+
 return [
 
-    /*
-    |--------------------------------------------------------------------------
-    | Default Filesystem Disk
-    |--------------------------------------------------------------------------
-    |
-    | Here you may specify the default filesystem disk that should be used
-    | by the framework. The "local" disk, as well as a variety of cloud
-    | based disks are available to your application for file storage.
-    |
-    */
-
-    'default' => env('FILESYSTEM_DISK', 'local'),
-
-    /*
-    |--------------------------------------------------------------------------
-    | Filesystem Disks
-    |--------------------------------------------------------------------------
-    |
-    | Below you may configure as many filesystem disks as necessary, and you
-    | may even configure multiple disks for the same driver. Examples for
-    | most supported storage drivers are configured here for reference.
-    |
-    | Supported drivers: "local", "ftp", "sftp", "s3"
-    |
-    */
-
     'disks' => [
 
-        'local' => [
-            'driver' => 'local',
-            'root' => storage_path('app/private'),
-            'serve' => true,
-            'throw' => false,
-            'report' => false,
-        ],
-
-        'public' => [
-            'driver' => 'local',
-            'root' => storage_path('app/public'),
-            'url' => rtrim(env('APP_URL', 'http://localhost'), '/').'/storage',
-            'visibility' => 'public',
-            'throw' => false,
-            'report' => false,
-        ],
-
         'shares' => [
             'driver' => 'local',
             'root' => storage_path('app/shares'),
@@ -54,34 +21,6 @@ return [
             'report' => false,
         ],
 
-        's3' => [
-            'driver' => 's3',
-            'key' => env('AWS_ACCESS_KEY_ID'),
-            'secret' => env('AWS_SECRET_ACCESS_KEY'),
-            'region' => env('AWS_DEFAULT_REGION'),
-            'bucket' => env('AWS_BUCKET'),
-            'url' => env('AWS_URL'),
-            'endpoint' => env('AWS_ENDPOINT'),
-            'use_path_style_endpoint' => env('AWS_USE_PATH_STYLE_ENDPOINT', false),
-            'throw' => false,
-            'report' => false,
-        ],
-
-    ],
-
-    /*
-    |--------------------------------------------------------------------------
-    | Symbolic Links
-    |--------------------------------------------------------------------------
-    |
-    | Here you may configure the symbolic links that will be created when the
-    | `storage:link` Artisan command is executed. The array keys should be
-    | the locations of the links and the values should be their targets.
-    |
-    */
-
-    'links' => [
-        public_path('storage') => storage_path('app/public'),
     ],
 
 ];