Stage 6 — Purchase System: partial receipt + supplier analytics

Schema:
- purchase_items.qty_received (backfilled from `received` boolean)
- purchases.warehouse_id (target warehouse FK)
- supplier_part_prices (price history per supplier/part with purchase ref)
- New status `partial` between ordered and received

Purchase ↔ Warehouse integration:
- Purchase::receiveItem(item, qty, warehouse?) — routes through
  WarehouseService::receive: creates batch + receipt event + supplier price row
- Purchase::receiveAllRemaining(warehouse?) — receives all outstanding lines
- Purchase::recomputeStatus() — auto: ordered → partial → received

Old flat markReceived() removed — every receipt now writes batches + ledger.

Filament:
- Purchase list: progress %, partial badge, warehouse picker on form
- ItemsRelationManager: per-line "Recepționează" with qty + warehouse modal,
  qty_received shown as "X.XX / Y.YY" with colour
- PartResource: new PriceHistoryRelationManager (supplier price history)
- SupplierResource: derived columns onTimeRate / avgDeliveryDays / spend(90d)
  + "Rerating" action

Analytics:
- App\Services\Warehouse\SupplierAnalytics (onTimeRate, avgDeliveryDays,
  spend, count, computedRating)
- `suppliers:rate` artisan command + weekly schedule (Mon 04:00)
- Computed rating: 70% on-time + 20% volume + 10% speed bonus

Tests (6 new, all pass):
- Partial receipt of 3/10 → status=partial + 1 batch + 1 price row
- receiveAllRemaining → status=received with received_at set
- Over-receive throws InvalidArgumentException
- Two partial receipts (4+6) → 2 batches FIFO + status=received
- onTimeRate 50% with 1 on-time + 1 late
- computedRating null when <2 deliveries

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

app/Filament/Tenant/Resources/PurchaseResource.php

@@ -6,6 +6,7 @@ use App\Filament\Tenant\Resources\PurchaseResource\Pages;
 use App\Filament\Tenant\Resources\PurchaseResource\RelationManagers;
 use App\Models\Tenant\Purchase;
 use App\Models\Tenant\Supplier;
+use App\Models\Tenant\Warehouse;
 use Filament\Actions;
 use Filament\Forms;
 use Filament\Notifications\Notification;
@@ -43,6 +44,11 @@ class PurchaseResource extends Resource
                         ->options(fn () => Supplier::where('is_active', true)->pluck('name', 'id'))
                         ->searchable()
                         ->required(),
+                    Forms\Components\Select::make('warehouse_id')
+                        ->label('Depozit țintă')
+                        ->options(fn () => Warehouse::where('is_active', true)->pluck('name', 'id'))
+                        ->default(fn () => Warehouse::where('is_default', true)->value('id'))
+                        ->required(),
                     Forms\Components\Select::make('status')
                         ->options(Purchase::STATUSES)
                         ->default('draft')
@@ -71,9 +77,19 @@ class PurchaseResource extends Resource
                     ->colors([
                         'gray' => ['draft'],
                         'warning' => ['ordered'],
+                        'info' => ['partial'],
                         'success' => ['received'],
                         'danger' => ['cancelled'],
                     ]),
+                Tables\Columns\TextColumn::make('received_progress')
+                    ->label('Progres')
+                    ->state(function (Purchase $r) {
+                        $items = $r->items;
+                        $ord = (float) $items->sum('qty');
+                        $rec = (float) $items->sum('qty_received');
+                        return $ord > 0 ? sprintf('%d%%', (int) round($rec / $ord * 100)) : '—';
+                    })
+                    ->alignRight(),
                 Tables\Columns\TextColumn::make('total')->money('MDL')->alignRight(),
             ])
             ->filters([
@@ -83,19 +99,27 @@ class PurchaseResource extends Resource
                     ->options(fn () => Supplier::pluck('name', 'id')),
             ])
             ->actions([
-                Actions\Action::make('receive')
-                    ->label('Recepționează')
+                Actions\Action::make('receive_all')
+                    ->label('Recepție totală')
                     ->icon('heroicon-m-check-circle')
                     ->color('success')
-                    ->visible(fn (Purchase $r) => $r->status !== 'received' && $r->status !== 'cancelled')
+                    ->visible(fn (Purchase $r) => ! in_array($r->status, ['received', 'cancelled', 'draft'], true))
                     ->requiresConfirmation()
-                    ->modalDescription('Se va incrementa stocul pieselor legate.')
+                    ->modalDescription('Se vor crea batch-uri pentru toate restanțele rămase în depozitul țintă.')
                     ->action(function (Purchase $r) {
-                        $r->markReceived();
-                        Notification::make()
-                            ->title('Recepționat — stoc actualizat')
-                            ->success()
-                            ->send();
+                        try {
+                            $r->receiveAllRemaining();
+                            Notification::make()
+                                ->title('Recepție completă — batch-uri create')
+                                ->success()
+                                ->send();
+                        } catch (\Throwable $e) {
+                            Notification::make()
+                                ->title('Eroare')
+                                ->body($e->getMessage())
+                                ->danger()
+                                ->send();
+                        }
                     }),
                 Actions\EditAction::make(),
                 Actions\DeleteAction::make(),