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/RelationManagers/ItemsRelationManager.php

@@ -3,8 +3,11 @@
 namespace App\Filament\Tenant\Resources\PurchaseResource\RelationManagers;
 
 use App\Models\Tenant\Part;
+use App\Models\Tenant\PurchaseItem;
+use App\Models\Tenant\Warehouse;
 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;
@@ -52,16 +55,58 @@ class ItemsRelationManager extends RelationManager
             ->columns([
                 Tables\Columns\TextColumn::make('name')->wrap(),
                 Tables\Columns\TextColumn::make('article')->placeholder('—'),
-                Tables\Columns\TextColumn::make('qty')->alignRight(),
+                Tables\Columns\TextColumn::make('qty')->label('Comandat')->alignRight(),
+                Tables\Columns\TextColumn::make('qty_received')
+                    ->label('Recepționat')
+                    ->alignRight()
+                    ->color(fn ($state, $record) => $record->isFullyReceived() ? 'success' : ((float) $state > 0 ? 'warning' : 'gray'))
+                    ->formatStateUsing(fn ($state, $record) => sprintf('%.2f / %.2f', (float) $state, (float) $record->qty)),
                 Tables\Columns\TextColumn::make('unit')->label('UM'),
                 Tables\Columns\TextColumn::make('buy_price')->money('MDL')->alignRight(),
                 Tables\Columns\TextColumn::make('total')->money('MDL')->alignRight(),
-                Tables\Columns\IconColumn::make('received')->boolean()->label('Recepț.'),
             ])
             ->headerActions([
                 Actions\CreateAction::make(),
             ])
             ->actions([
+                Actions\Action::make('receive_item')
+                    ->label('Recepționează')
+                    ->icon('heroicon-m-arrow-down-tray')
+                    ->color('success')
+                    ->visible(fn (PurchaseItem $r) => ! $r->isFullyReceived())
+                    ->schema([
+                        Forms\Components\Placeholder::make('outstanding')
+                            ->label('Restanță')
+                            ->content(fn (PurchaseItem $r) => sprintf('%.2f %s', $r->outstanding(), $r->unit ?? 'buc')),
+                        Forms\Components\TextInput::make('qty')
+                            ->label('Cantitate recepționată')
+                            ->numeric()
+                            ->required()
+                            ->minValue(0.001)
+                            ->default(fn (PurchaseItem $r) => $r->outstanding()),
+                        Forms\Components\Select::make('warehouse_id')
+                            ->label('Depozit țintă')
+                            ->options(fn () => Warehouse::where('is_active', true)->pluck('name', 'id'))
+                            ->default(fn (PurchaseItem $r) => $r->purchase?->warehouse_id
+                                ?? Warehouse::where('is_default', true)->value('id'))
+                            ->required(),
+                    ])
+                    ->action(function (PurchaseItem $r, array $data) {
+                        $wh = $data['warehouse_id'] ? Warehouse::find($data['warehouse_id']) : null;
+                        try {
+                            $r->purchase->receiveItem($r, (float) $data['qty'], $wh);
+                            Notification::make()
+                                ->title('Recepționat — batch creat')
+                                ->success()
+                                ->send();
+                        } catch (\Throwable $e) {
+                            Notification::make()
+                                ->title('Eroare la recepție')
+                                ->body($e->getMessage())
+                                ->danger()
+                                ->send();
+                        }
+                    }),
                 Actions\EditAction::make(),
                 Actions\DeleteAction::make(),
             ]);