Modernize: remove unused deps, replace qirolab/laravel-themer with custom ThemeService, drop doctrine/dbal

- Remove whichbrowser/parser, mockery/mockery, fruitcake/laravel-debugbar,
  itsgoingd/clockwork (all unused)
- Replace qirolab/laravel-themer (dev-master) with custom App\Services\ThemeService
  and App\Providers\ThemeServiceProvider
- Drop doctrine/dbal: rewrite all ->change() calls in 8 migrations to raw
  DB::statement('ALTER TABLE ... MODIFY ...') SQL
- RenameColumn() kept intact (works without dbal in Laravel 13)
- Fix 2026_04_04 migration: inverted column-exists logic corrected
- Clear bootstrap cache to remove stale references to removed packages

composer.json

@@ -12,7 +12,6 @@
   "require": {
     "php": "^8.1|^8.2|^8.3|^8.4|^8.5",
     "ext-sockets": "*",
-    "doctrine/dbal": "^4.4",
     "filament/filament": "^5.6",
     "guzzlehttp/guzzle": "^7.10",
     "inertiajs/inertia-laravel": "^3.1",
@@ -24,7 +23,6 @@
     "laravel/tinker": "^3.0",
     "livewire/livewire": "^4.3",
     "opcodesio/log-viewer": "^3.24",
-    "qirolab/laravel-themer": "dev-master",
     "ryangjchandler/laravel-cloudflare-turnstile": "^3.0",
     "spatie/laravel-activitylog": "^5.0",
     "spatie/laravel-sluggable": "^4.0",
@@ -35,19 +33,15 @@
   "require-dev": {
     "fakerphp/faker": "^1.24",
     "filament/upgrade": "^5.6",
-    "fruitcake/laravel-debugbar": "^4.2",
-    "itsgoingd/clockwork": "^5.3",
     "laravel/boost": "^2.4",
     "laravel/pint": "^v1.29",
     "laravel/sail": "^1.60",
-    "mockery/mockery": "^1.6",
     "nunomaduro/collision": "^8.9",
     "pestphp/pest": "^4.7",
     "phpstan/phpstan": "^2.1",
     "phpunit/phpunit": "^12.5",
     "rector/rector": "^2.4",
-    "spatie/laravel-ignition": "^2.12",
-    "whichbrowser/parser": "^2.1"
+    "spatie/laravel-ignition": "^2.12"
   },
   "autoload": {
     "psr-4": {
@@ -99,7 +93,6 @@
       "pestphp/pest-plugin": true
     }
   },
-  "repositories": [],
   "minimum-stability": "stable",
   "prefer-stable": true
 }