feat: OCR invoice import via Claude Vision

Upload an invoice photo → Claude extracts {supplier_name, date, currency,
items, total} as JSON → auto-create a draft Purchase + PurchaseItems →
redirect to edit so the user reviews before confirming/receiving.

OcrInvoiceService:
- Validates supported MIME (jpg/png/webp/gif)
- Reads tenant Claude key (settings.ai.claude_key) — friendly error if missing
- Calls /v1/messages with image content block + structured-output system prompt
- Tolerant parser: strips ```json fences, falls back to first {…} block
- normalize(): computes per-item total when absent, fills overall total
- All return shapes: {ok:bool, data?, error?, raw?, tokens?}

Filament:
- "Import factură (OCR)" header action on Purchases list
- Image file upload → service → matches Supplier by case-insensitive name
  (notes the unmapped name if no match) → creates draft Purchase + items →
  redirects to the Edit page

Tests (6 new):
- clean JSON parses; markdown fences stripped; malformed → graceful error;
  missing key → friendly message + no HTTP; unsupported MIME rejected;
  item total computed when missing

Full suite: 123 passed.

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

app/Filament/Tenant/Resources/PurchaseResource/Pages/ListPurchases.php

@@ -3,8 +3,15 @@
 namespace App\Filament\Tenant\Resources\PurchaseResource\Pages;
 
 use App\Filament\Tenant\Resources\PurchaseResource;
+use App\Models\Tenant\Purchase;
+use App\Models\Tenant\PurchaseItem;
+use App\Models\Tenant\Supplier;
+use App\Services\Ai\OcrInvoiceService;
 use Filament\Actions;
+use Filament\Forms;
+use Filament\Notifications\Notification;
 use Filament\Resources\Pages\ListRecords;
+use Illuminate\Support\Facades\Storage;
 
 class ListPurchases extends ListRecords
 {
@@ -12,6 +19,78 @@ class ListPurchases extends ListRecords
 
     protected function getHeaderActions(): array
     {
-        return [Actions\CreateAction::make()];
+        return [
+            Actions\Action::make('ocr')
+                ->label('Import factură (OCR)')
+                ->icon('heroicon-m-document-arrow-up')
+                ->color('gray')
+                ->modalHeading('Import factură via OCR')
+                ->modalDescription('Încarcă o poză cu factura. AI-ul extrage furnizorul, data și liniile. Verifici și salvezi.')
+                ->schema([
+                    Forms\Components\FileUpload::make('invoice')
+                        ->label('Foto factură')
+                        ->image()
+                        ->disk('local')
+                        ->directory('ocr-imports')
+                        ->required()
+                        ->maxSize(5120),
+                ])
+                ->action(function (array $data) {
+                    $abs = Storage::disk('local')->path($data['invoice']);
+                    $result = app(OcrInvoiceService::class)->extract($abs);
+
+                    if (! ($result['ok'] ?? false)) {
+                        Notification::make()
+                            ->title('OCR eșuat')
+                            ->body($result['error'] ?? 'Eroare necunoscută.')
+                            ->danger()->send();
+                        @unlink($abs);
+                        return;
+                    }
+
+                    $payload = $result['data'];
+
+                    // Match supplier by case-insensitive name.
+                    $supplierId = null;
+                    if ($payload['supplier_name']) {
+                        $supplierId = Supplier::whereRaw('LOWER(name) = ?', [mb_strtolower($payload['supplier_name'])])
+                            ->value('id');
+                    }
+
+                    $purchase = Purchase::create([
+                        'number' => Purchase::generateNumber(
+                            app(\App\Tenancy\TenantManager::class)->currentId()
+                        ),
+                        'supplier_id' => $supplierId,
+                        'order_date' => $payload['date'] ?? today()->toDateString(),
+                        'status' => 'draft',
+                        'notes' => 'Importat OCR' . ($payload['supplier_name'] && ! $supplierId
+                            ? " · furnizor nemap-uit: „{$payload['supplier_name']}”"
+                            : ''),
+                    ]);
+
+                    foreach ($payload['items'] as $item) {
+                        PurchaseItem::create([
+                            'purchase_id' => $purchase->id,
+                            'name' => $item['name'],
+                            'qty' => $item['qty'],
+                            'unit' => 'buc',
+                            'buy_price' => $item['unit_price'],
+                        ]);
+                    }
+                    $purchase->refresh()->recalcTotal();
+
+                    @unlink($abs);
+
+                    Notification::make()
+                        ->title('Factură importată')
+                        ->body(sprintf('%d linii, total %.2f. Verifică și ajustează înainte de a confirma.',
+                            count($payload['items']), (float) $purchase->total))
+                        ->success()->send();
+
+                    $this->redirect(PurchaseResource::getUrl('edit', ['record' => $purchase]));
+                }),
+            Actions\CreateAction::make(),
+        ];
     }
 }