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/Layer.php

@@ -5,13 +5,12 @@ namespace App\Models;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\SoftDeletes;
 
-
 class Layer extends Model
 {
     use SoftDeletes;
 
     protected $fillable = [
-        'project_id', 'phase_id', 'name', 'color', 'geojson_data', 'original_file', 'uploaded_by'
+        'project_id', 'phase_id', 'name', 'color', 'geojson_data', 'original_file', 'uploaded_by',
     ];
 
     protected $casts = [
@@ -32,6 +31,7 @@ class Layer extends Model
     {
         return $this->belongsTo(User::class, 'uploaded_by');
     }
+
     public function features()
     {
         return $this->hasMany(Feature::class);
@@ -46,4 +46,4 @@ class Layer extends Model
     {
         return $this->morphMany(Media::class, 'mediable');
     }
-}
+}