feat(absences) : avancement module absences + suppression du portail client

Deux lots regroupés sur la branche feat/absence-management.

Suppression complète du portail client :
- retire ROLE_CLIENT (security.yaml) ; User::getRoles() ajoute toujours ROLE_USER
- supprime l'entité ClientTicket (+ repo, states, relations), User.client et
  User.allowedProjects, NotificationService, ProjectAllowedExtension, le bloc
  ROLE_CLIENT de MailAccessChecker
- front : pages /portal, layout portal, composants client-ticket/,
  AdminClientTicketTab, services/dto/i18n/docs associés
- fixtures : retire les users client-liot / client-acme
- migration Version20260522110000 (drop client_ticket, user_allowed_projects,
  colonnes liées ; task_document.task_id -> NOT NULL)
- tests : retire les cas obsolètes testant le blocage des clients sur le mail

Module gestion des absences (WIP) :
- entités / migrations (Version20260521160000, Version20260522090000)
- pages absences.vue / team-absences.vue, composants frontend/components/absence/
- services front, AccrueLeaveCommand, PublicHolidayController

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

src/Entity/AbsenceBalance.php

@@ -59,10 +59,16 @@ class AbsenceBalance
     #[Groups(['absence_balance:read'])]
     private ?string $period = null;
 
+    /** Days acquired during the *previous* reference period (Congés N-1): fully available to take. */
     #[ORM\Column(type: Types::FLOAT)]
     #[Groups(['absence_balance:read', 'absence_balance:write'])]
     private float $acquired = 0.0;
 
+    /** Days being accrued during the *current* reference period (Congés N): "en cours d'acquisition". */
+    #[ORM\Column(type: Types::FLOAT)]
+    #[Groups(['absence_balance:read', 'absence_balance:write'])]
+    private float $acquiring = 0.0;
+
     #[ORM\Column(type: Types::FLOAT)]
     #[Groups(['absence_balance:read', 'absence_balance:write'])]
     private float $taken = 0.0;
@@ -72,10 +78,25 @@ class AbsenceBalance
     #[Groups(['absence_balance:read'])]
     private float $pending = 0.0;
 
+    /** Last month (format YYYY-MM) for which the monthly accrual was applied. */
+    #[ORM\Column(length: 7, nullable: true)]
+    private ?string $lastAccruedMonth = null;
+
+    /** Total entitlement for the period, both finalized (N-1) and in-progress (N). */
+    #[Groups(['absence_balance:read'])]
+    public function getAcquiredTotal(): float
+    {
+        return $this->acquired + $this->acquiring;
+    }
+
+    /**
+     * Days the employee can still take: in this organisation the days being
+     * accrued (N) are posable too, so they count towards what is available.
+     */
     #[Groups(['absence_balance:read'])]
     public function getAvailable(): float
     {
-        return $this->acquired - $this->taken;
+        return $this->acquired + $this->acquiring - $this->taken;
     }
 
     #[Groups(['absence_balance:read'])]
@@ -137,6 +158,18 @@ class AbsenceBalance
         return $this;
     }
 
+    public function getAcquiring(): float
+    {
+        return $this->acquiring;
+    }
+
+    public function setAcquiring(float $acquiring): static
+    {
+        $this->acquiring = $acquiring;
+
+        return $this;
+    }
+
     public function getTaken(): float
     {
         return $this->taken;
@@ -160,4 +193,16 @@ class AbsenceBalance
 
         return $this;
     }
+
+    public function getLastAccruedMonth(): ?string
+    {
+        return $this->lastAccruedMonth;
+    }
+
+    public function setLastAccruedMonth(?string $lastAccruedMonth): static
+    {
+        $this->lastAccruedMonth = $lastAccruedMonth;
+
+        return $this;
+    }
 }