Stage 7+14 — Mechanic Board + Scan Center

Mechanic Workflow (Stage 7):
- /app/mechanic Filament page filtered to master_id = auth user
- Kanban 4 columns (in_work / awaiting_parts / ready / recent), each card
  shows WO#, plate, client, complaint summary, photo presence
- 2 KPI tiles (active now / closed today)
- Mobile-responsive grid (auto-fit, minmax 260px)

WarehouseService:
- issueNow(WorkOrderPart) — consume reservations immediately scoped to one
  line, without closing the WO (mechanic physically takes part now)
- returnPart(WorkOrderPart, qty?, notes?) — refund to stock as new batch
  at original buy_price, writes `return` event, capped at consumed total

WO PartsRelationManager:
- "Eliberează" action — visible when active reservation exists
- "Restituire" action — visible when consumed reservation exists, with qty
  modal + notes

Scan Center (Stage 14):
- PartResource "QR" action — per-part SVG QR with payload PART:<article|id>
- BulkAction "Tipărește etichete QR" → /parts/labels?ids=N,M (HTML A4 sheet,
  3-col grid, print CSS hides toolbar)
- /app/scan Filament page using html5-qrcode 2.3.8 (CDN), auto-picks back
  camera, decodes → Livewire dispatches scanner-decoded → resolveAndRedirect
- Lookup matches PART:N prefix, parts.article, parts.barcode, or numeric id
- Manual input fallback for browsers without camera

Tests (6 new):
- WarehouseIssueReturnTest (3): issueNow consumes immediately; returnPart
  creates positive batch + return event; over-return is capped
- ScannerLookupTest (3): PART: prefix lookup, raw barcode lookup, unknown miss

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

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

@@ -3,9 +3,12 @@
 namespace App\Filament\Tenant\Resources\WorkOrderResource\RelationManagers;
 
 use App\Models\Tenant\Part;
+use App\Models\Tenant\PartReservation;
 use App\Models\Tenant\WorkOrderPart;
+use App\Services\Warehouse\WarehouseService;
 use Filament\Actions;
 use Filament\Forms;
+use Filament\Notifications\Notification;
 use Filament\Resources\RelationManagers\RelationManager;
 use Filament\Schemas\Components\Utilities\Set;
 use Filament\Schemas\Schema;
@@ -82,6 +85,48 @@ class PartsRelationManager extends RelationManager
                 Actions\CreateAction::make(),
             ])
             ->actions([
+                Actions\Action::make('issue_now')
+                    ->label('Eliberează')
+                    ->icon('heroicon-m-arrow-up-on-square')
+                    ->color('warning')
+                    ->visible(fn (WorkOrderPart $r) => $r->part_id
+                        && PartReservation::where('work_order_part_id', $r->id)
+                            ->where('status', PartReservation::STATUS_ACTIVE)
+                            ->exists())
+                    ->requiresConfirmation()
+                    ->modalDescription('Confirmă că mecanicul ia fizic piesa din depozit. Stocul scade acum, fără să aștepți închiderea fișei.')
+                    ->action(function (WorkOrderPart $r) {
+                        $n = app(WarehouseService::class)->issueNow($r);
+                        Notification::make()
+                            ->title("Eliberat: {$n} rezervări consumate")
+                            ->success()->send();
+                    }),
+                Actions\Action::make('return_part')
+                    ->label('Restituire')
+                    ->icon('heroicon-m-arrow-uturn-left')
+                    ->color('gray')
+                    ->visible(fn (WorkOrderPart $r) => $r->part_id
+                        && PartReservation::where('work_order_part_id', $r->id)
+                            ->where('status', PartReservation::STATUS_CONSUMED)
+                            ->exists())
+                    ->schema([
+                        Forms\Components\TextInput::make('qty')
+                            ->label('Cantitate restituită')
+                            ->numeric()
+                            ->required()
+                            ->minValue(0.001)
+                            ->default(fn (WorkOrderPart $r) => (float) $r->qty),
+                        Forms\Components\Textarea::make('notes')->rows(2)->label('Observații'),
+                    ])
+                    ->action(function (WorkOrderPart $r, array $data) {
+                        $batch = app(WarehouseService::class)->returnPart(
+                            $r, (float) $data['qty'], $data['notes'] ?? null
+                        );
+                        Notification::make()
+                            ->title($batch ? 'Piesa returnată în stoc' : 'Nimic de restituit')
+                            ->{$batch ? 'success' : 'warning'}()
+                            ->send();
+                    }),
                 Actions\EditAction::make(),
                 Actions\DeleteAction::make(),
             ]);