Stage 4 — Labor Catalog: fixed price + default parts + service templates

Schema:
- labors.pricing_mode (hourly/fixed) + fixed_price
- labor_parts (default parts auto-added with a labor)
- service_templates + service_template_items (labor/part bundles)

ServiceComposer:
- addLabor(wo, labor, withParts) — hourly (hours×rate) or fixed (fixed_price),
  then auto-adds the labor's default parts
- addPart(wo, part, qty) — catalog price snapshot
- applyTemplate(wo, template) — adds all labor+part lines, recalcs total
- hourlyRate from settings.labor_rate

Filament:
- LaborResource: pricing_mode (live) toggles hours/fixed_price fields,
  DefaultPartsRelationManager
- ServiceTemplateResource (Service group) with ItemsRelationManager
- WorkOrder edit "Aplică șablon" action → applyTemplate
- WorksRelationManager CreateAction auto-adds labor default parts

Tests (6 new):
- hourly rate×hours; fixed uses fixed_price; default parts auto-added;
  withParts=false skips; applyTemplate adds lines + recalcs total;
  templates tenant-isolated

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

app/Filament/Tenant/Resources/WorkOrderResource/RelationManagers/WorksRelationManager.php

@@ -69,7 +69,23 @@ class WorksRelationManager extends RelationManager
                     ->colors(['gray' => ['todo'], 'warning' => ['in_progress'], 'success' => ['done']]),
             ])
             ->headerActions([
-                Actions\CreateAction::make(),
+                Actions\CreateAction::make()
+                    ->after(function (WorkOrderWork $record) {
+                        // Auto-add the labor's default parts to the parent WO.
+                        if (! $record->labor_id) return;
+                        $labor = Labor::with('laborParts.part')->find($record->labor_id);
+                        $wo = $record->workOrder;
+                        if (! $labor || ! $wo || $labor->laborParts->isEmpty()) return;
+                        $composer = app(\App\Services\ServiceComposer::class);
+                        foreach ($labor->laborParts as $lp) {
+                            if ($lp->part) {
+                                $composer->addPart($wo, $lp->part, (float) $lp->qty, $lp->unit);
+                            }
+                        }
+                        \Filament\Notifications\Notification::make()
+                            ->title('Piese implicite adăugate (' . $labor->laborParts->count() . ')')
+                            ->success()->send();
+                    }),
             ])
             ->actions([
                 Actions\EditAction::make(),