feat: expose winter placements to n8n over an api endpoint

src/Entity/Disposition.php

@@ -80,6 +80,16 @@ class Disposition implements BlameableEntityInterface, TimestampableEntityInterf
     #[ORM\Column(type: Types::BOOLEAN, options: ['default' => false])]
     private bool $feedbackWaived = false;
 
+    /**
+     * The numbered place on the assignment this placement fills - the n8n feed's "platz_id" is
+     * "<assignment id>-<slot>", and n8n hangs the Wechselpass off it. Taken once, here at creation,
+     * and never renumbered: a replacement takes the number the called-off teamer freed, whoever
+     * stays keeps theirs. A called-off placement keeps its number for the record but no longer
+     * holds it (Assignment::getPlaces()).
+     */
+    #[ORM\Column(type: Types::SMALLINT, nullable: true)]
+    private ?int $slot = null;
+
     public function __construct(Application $application)
     {
         $this->uuid = Uuid::v4();
@@ -89,6 +99,7 @@ class Disposition implements BlameableEntityInterface, TimestampableEntityInterf
             ? static::STATUS_CONFIRMED
             : static::STATUS_NEW;
         $this->assignment = $application->getAssignment();
+        $this->slot = $this->assignment?->getNextFreeSlot();
         $this->teamer = $application->getTeamer();
         $this->pickup = $application->getPickup();
         $this->specialAgreements = $application->getRequests();
@@ -373,4 +384,16 @@ class Disposition implements BlameableEntityInterface, TimestampableEntityInterf
 
         return $this;
     }
+
+    public function getSlot(): ?int
+    {
+        return $this->slot;
+    }
+
+    public function setSlot(?int $slot): static
+    {
+        $this->slot = $slot;
+
+        return $this;
+    }
 }