chore: cleanup dead code + format with Pint

- Remove unused FeaturesController (empty stubs, no routes)
- Remove ConvertSpatialFile CLI command (unused; service used in LayerManager)
- Remove MigrateGeojsonToFeatures CLI command (one-shot migration, not referenced)
- Remove .claude/worktrees/ (11 old agent worktrees from June)
- Apply Laravel Pint formatting across 219 files (style only, no functional changes)

Tests: 101 passing (319 assertions)
API routes: unchanged (8 routes intact)

lang/ru/auth.php

@@ -17,4 +17,4 @@ return [
     'password' => 'Предоставленный пароль неверен.',
     'throttle' => 'Слишком много попыток входа. Пожалуйста, попробуйте снова через :seconds секунд.',
 
-];
+];