feat(directory) : migrate Client into Directory module (back)

LST-58 (2.4), part 1/2 — Client move. Prospect + repertoire front are pending
the product spec and will be added on this branch afterward.

- Client entity moved to src/Module/Directory/Domain/Entity; repository split
  into Domain/Repository/ClientRepositoryInterface + Doctrine impl (bound in
  services.yaml). 5 client MCP tools moved to Infrastructure/Mcp/Tool, now
  injecting the interface.
- resolve_target_entities ClientInterface repointed to Directory\Client;
  Directory mapping added; DirectoryModule registered (id directory, 2 RBAC
  perms). Client.projects relation now uses ProjectInterface -> Directory no
  longer depends on ProjectManagement.
- ProjectManagement Create/UpdateProjectTool inject Directory's
  ClientRepositoryInterface; Serializer and fixtures repointed.
- Garde-fous: #[Auditable] + Timestampable/Blamable on Client (additive
  migration: created_at/updated_at + created_by/updated_by FK ON DELETE SET
  NULL + COMMENT).

161 tests green, mapping valid, no API route regression, cs-fixer clean.

src/Entity/Client.php

@@ -1,157 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace App\Entity;
-
-use ApiPlatform\Metadata\ApiResource;
-use ApiPlatform\Metadata\Delete;
-use ApiPlatform\Metadata\Get;
-use ApiPlatform\Metadata\GetCollection;
-use ApiPlatform\Metadata\Patch;
-use ApiPlatform\Metadata\Post;
-use App\Module\ProjectManagement\Domain\Entity\Project;
-use App\Repository\ClientRepository;
-use App\Shared\Domain\Contract\ClientInterface;
-use Doctrine\Common\Collections\ArrayCollection;
-use Doctrine\Common\Collections\Collection;
-use Doctrine\ORM\Mapping as ORM;
-use Symfony\Component\Serializer\Attribute\Groups;
-
-#[ApiResource(
-    operations: [
-        new GetCollection(paginationEnabled: false, security: "is_granted('ROLE_USER')"),
-        new Get(security: "is_granted('ROLE_USER')"),
-        new Post(security: "is_granted('ROLE_ADMIN')"),
-        new Patch(security: "is_granted('ROLE_ADMIN')"),
-        new Delete(security: "is_granted('ROLE_ADMIN')"),
-    ],
-    normalizationContext: ['groups' => ['client:read']],
-    denormalizationContext: ['groups' => ['client:write']],
-    order: ['name' => 'ASC'],
-)]
-#[ORM\Entity(repositoryClass: ClientRepository::class)]
-class Client implements ClientInterface
-{
-    #[ORM\Id]
-    #[ORM\GeneratedValue]
-    #[ORM\Column]
-    #[Groups(['client:read', 'project:read', 'user:list'])]
-    private ?int $id = null;
-
-    #[ORM\Column(length: 255)]
-    #[Groups(['client:read', 'client:write', 'project:read', 'user:list'])]
-    private ?string $name = null;
-
-    #[ORM\Column(length: 255, nullable: true)]
-    #[Groups(['client:read', 'client:write'])]
-    private ?string $email = null;
-
-    #[ORM\Column(length: 50, nullable: true)]
-    #[Groups(['client:read', 'client:write'])]
-    private ?string $phone = null;
-
-    #[ORM\Column(length: 255, nullable: true)]
-    #[Groups(['client:read', 'client:write'])]
-    private ?string $street = null;
-
-    #[ORM\Column(length: 255, nullable: true)]
-    #[Groups(['client:read', 'client:write'])]
-    private ?string $city = null;
-
-    #[ORM\Column(length: 20, nullable: true)]
-    #[Groups(['client:read', 'client:write'])]
-    private ?string $postalCode = null;
-
-    /** @var Collection<int, Project> */
-    #[ORM\OneToMany(targetEntity: Project::class, mappedBy: 'client')]
-    private Collection $projects;
-
-    public function __construct()
-    {
-        $this->projects = new ArrayCollection();
-    }
-
-    public function getId(): ?int
-    {
-        return $this->id;
-    }
-
-    public function getName(): ?string
-    {
-        return $this->name;
-    }
-
-    public function setName(string $name): static
-    {
-        $this->name = $name;
-
-        return $this;
-    }
-
-    public function getEmail(): ?string
-    {
-        return $this->email;
-    }
-
-    public function setEmail(?string $email): static
-    {
-        $this->email = $email;
-
-        return $this;
-    }
-
-    public function getPhone(): ?string
-    {
-        return $this->phone;
-    }
-
-    public function setPhone(?string $phone): static
-    {
-        $this->phone = $phone;
-
-        return $this;
-    }
-
-    public function getStreet(): ?string
-    {
-        return $this->street;
-    }
-
-    public function setStreet(?string $street): static
-    {
-        $this->street = $street;
-
-        return $this;
-    }
-
-    public function getCity(): ?string
-    {
-        return $this->city;
-    }
-
-    public function setCity(?string $city): static
-    {
-        $this->city = $city;
-
-        return $this;
-    }
-
-    public function getPostalCode(): ?string
-    {
-        return $this->postalCode;
-    }
-
-    public function setPostalCode(?string $postalCode): static
-    {
-        $this->postalCode = $postalCode;
-
-        return $this;
-    }
-
-    /** @return Collection<int, Project> */
-    public function getProjects(): Collection
-    {
-        return $this->projects;
-    }
-}