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/Media.php

@@ -48,10 +48,17 @@ class Media extends Model
     public function getFormattedSizeAttribute()
     {
         $bytes = $this->file_size;
-        if ($bytes >= 1073741824) return round($bytes / 1073741824, 2) . ' GB';
-        if ($bytes >= 1048576) return round($bytes / 1048576, 1) . ' MB';
-        if ($bytes >= 1024) return round($bytes / 1024) . ' KB';
-        return $bytes . ' B';
+        if ($bytes >= 1073741824) {
+            return round($bytes / 1073741824, 2).' GB';
+        }
+        if ($bytes >= 1048576) {
+            return round($bytes / 1048576, 1).' MB';
+        }
+        if ($bytes >= 1024) {
+            return round($bytes / 1024).' KB';
+        }
+
+        return $bytes.' B';
     }
 
     // Scopes
@@ -72,4 +79,4 @@ class Media extends Model
             Storage::delete($media->file_path);
         });
     }
-}
+}