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/mail.php

@@ -1,140 +1,24 @@
 <?php
 
+/*
+|--------------------------------------------------------------------------
+| Markdown Mail Settings
+|--------------------------------------------------------------------------
+|
+| Markdown mail wears Livewire Material's theme, coloured from the light
+| scheme in resources/css/material-scheme.json. Every other key comes from
+| the framework's defaults.
+|
+*/
+
 return [
 
-    /*
-    |--------------------------------------------------------------------------
-    | Default Mailer
-    |--------------------------------------------------------------------------
-    |
-    | This option controls the default mailer that is used to send all email
-    | messages unless another mailer is explicitly specified when sending
-    | the message. All additional mailers can be configured within the
-    | "mailers" array. Examples of each type of mailer are provided.
-    |
-    */
-
-    'default' => env('MAIL_MAILER', 'log'),
-
-    /*
-    |--------------------------------------------------------------------------
-    | Mailer Configurations
-    |--------------------------------------------------------------------------
-    |
-    | Here you may configure all of the mailers used by your application plus
-    | their respective settings. Several examples have been configured for
-    | you and you are free to add your own as your application requires.
-    |
-    | Laravel supports a variety of mail "transport" drivers that can be used
-    | when delivering an email. You may specify which one you're using for
-    | your mailers below. You may also add additional mailers if needed.
-    |
-    | Supported: "smtp", "sendmail", "mailgun", "ses", "ses-v2",
-    |            "postmark", "resend", "log", "array",
-    |            "failover", "roundrobin"
-    |
-    */
-
-    'mailers' => [
-
-        'smtp' => [
-            'transport' => 'smtp',
-            'scheme' => env('MAIL_SCHEME'),
-            'url' => env('MAIL_URL'),
-            'host' => env('MAIL_HOST', '127.0.0.1'),
-            'port' => env('MAIL_PORT', 2525),
-            'username' => env('MAIL_USERNAME'),
-            'password' => env('MAIL_PASSWORD'),
-            'timeout' => null,
-            'local_domain' => env('MAIL_EHLO_DOMAIN', parse_url((string) env('APP_URL', 'http://localhost'), PHP_URL_HOST)),
-        ],
-
-        'ses' => [
-            'transport' => 'ses',
-        ],
-
-        'postmark' => [
-            'transport' => 'postmark',
-            // 'message_stream_id' => env('POSTMARK_MESSAGE_STREAM_ID'),
-            // 'client' => [
-            //     'timeout' => 5,
-            // ],
-        ],
-
-        'resend' => [
-            'transport' => 'resend',
-        ],
-
-        'sendmail' => [
-            'transport' => 'sendmail',
-            'path' => env('MAIL_SENDMAIL_PATH', '/usr/sbin/sendmail -bs -i'),
-        ],
-
-        'log' => [
-            'transport' => 'log',
-            'channel' => env('MAIL_LOG_CHANNEL'),
-        ],
-
-        'array' => [
-            'transport' => 'array',
-        ],
-
-        'failover' => [
-            'transport' => 'failover',
-            'mailers' => [
-                'smtp',
-                'log',
-            ],
-            'retry_after' => 60,
-        ],
-
-        'roundrobin' => [
-            'transport' => 'roundrobin',
-            'mailers' => [
-                'ses',
-                'postmark',
-            ],
-            'retry_after' => 60,
-        ],
-
-    ],
-
-    /*
-    |--------------------------------------------------------------------------
-    | Global "From" Address
-    |--------------------------------------------------------------------------
-    |
-    | You may wish for all emails sent by your application to be sent from
-    | the same address. Here you may specify a name and address that is
-    | used globally for all emails that are sent by your application.
-    |
-    */
-
-    'from' => [
-        'address' => env('MAIL_FROM_ADDRESS', 'hello@example.com'),
-        'name' => env('MAIL_FROM_NAME', 'Example'),
-    ],
-
-    /*
-    |--------------------------------------------------------------------------
-    | Markdown Mail Settings
-    |--------------------------------------------------------------------------
-    |
-    | Markdown mail wears Livewire Material's theme, coloured from the light
-    | scheme in resources/css/material-scheme.json.
-    |
-    */
-
     'markdown' => [
         'theme' => env('MAIL_MARKDOWN_THEME', 'livewire-material::mail.theme'),
 
         'paths' => [
             resource_path('views/vendor/mail'),
         ],
-
-        'extensions' => [
-            // \League\CommonMark\Extension\Strikethrough\StrikethroughExtension::class,
-        ],
     ],
 
 ];