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)

app/Models/ActivityLog.php

@@ -12,18 +12,18 @@ class ActivityLog extends Model
     protected $fillable = ['action', 'model_type', 'model_id', 'user_id', 'changes', 'created_at'];
 
     protected $casts = [
-        'changes'    => 'array',
+        'changes' => 'array',
         'created_at' => 'datetime',
     ];
 
     public static function record(string $action, Model $model, array $changes = []): void
     {
         static::create([
-            'action'     => $action,
+            'action' => $action,
             'model_type' => class_basename($model),
-            'model_id'   => $model->getKey(),
-            'user_id'    => Auth::id(),
-            'changes'    => empty($changes) ? null : $changes,
+            'model_id' => $model->getKey(),
+            'user_id' => Auth::id(),
+            'changes' => empty($changes) ? null : $changes,
             'created_at' => now(),
         ]);
     }