feat(mcp) : add Slots, Machine Links, Structure, and Clone tools

- list_slots + update_slots for composant/piece slots
- list/add/update/remove machine links (component, piece, product)
- get_machine_structure with full hierarchy
- clone_machine with all links and custom fields
- 52 MCP tests pass total

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/Mcp/Tool/Machine/ListMachineLinksTool.php

@@ -0,0 +1,70 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Mcp\Tool\Machine;
+
+use App\Mcp\Tool\McpToolHelper;
+use App\Repository\MachineComponentLinkRepository;
+use App\Repository\MachinePieceLinkRepository;
+use App\Repository\MachineProductLinkRepository;
+use App\Repository\MachineRepository;
+use Mcp\Capability\Attribute\McpTool;
+
+#[McpTool(
+    name: 'list_machine_links',
+    description: 'List all links (component, piece, product) for a given machine, grouped by type.',
+)]
+class ListMachineLinksTool
+{
+    use McpToolHelper;
+
+    public function __construct(
+        private readonly MachineRepository $machines,
+        private readonly MachineComponentLinkRepository $componentLinks,
+        private readonly MachinePieceLinkRepository $pieceLinks,
+        private readonly MachineProductLinkRepository $productLinks,
+    ) {}
+
+    public function __invoke(string $machineId): array
+    {
+        $machine = $this->machines->find($machineId);
+        if (null === $machine) {
+            $this->mcpError('NotFound', "Machine {$machineId} not found.");
+        }
+
+        $compRows = $this->componentLinks->createQueryBuilder('cl')
+            ->select('cl.id', 'IDENTITY(cl.composant) AS entityId', 'IDENTITY(cl.parentLink) AS parentLinkId', 'cl.nameOverride', 'cl.referenceOverride', 'cl.prixOverride')
+            ->where('cl.machine = :machine')
+            ->setParameter('machine', $machine)
+            ->orderBy('cl.id', 'ASC')
+            ->getQuery()
+            ->getArrayResult()
+        ;
+
+        $pieceRows = $this->pieceLinks->createQueryBuilder('pl')
+            ->select('pl.id', 'IDENTITY(pl.piece) AS entityId', 'IDENTITY(pl.parentLink) AS parentLinkId', 'pl.nameOverride', 'pl.referenceOverride', 'pl.prixOverride', 'pl.quantity')
+            ->where('pl.machine = :machine')
+            ->setParameter('machine', $machine)
+            ->orderBy('pl.id', 'ASC')
+            ->getQuery()
+            ->getArrayResult()
+        ;
+
+        $productRows = $this->productLinks->createQueryBuilder('prl')
+            ->select('prl.id', 'IDENTITY(prl.product) AS entityId', 'IDENTITY(prl.parentLink) AS parentLinkId', 'IDENTITY(prl.parentComponentLink) AS parentComponentLinkId', 'IDENTITY(prl.parentPieceLink) AS parentPieceLinkId')
+            ->where('prl.machine = :machine')
+            ->setParameter('machine', $machine)
+            ->orderBy('prl.id', 'ASC')
+            ->getQuery()
+            ->getArrayResult()
+        ;
+
+        return $this->jsonResponse([
+            'machineId'      => $machineId,
+            'componentLinks' => $compRows,
+            'pieceLinks'     => $pieceRows,
+            'productLinks'   => $productRows,
+        ]);
+    }
+}