Implement ticket links and blocker state

tests/Feature/Models/TicketTest.php

@@ -7,6 +7,8 @@ use App\Models\Project;
 use App\Models\Ticket;
 use App\Models\TicketFieldDefinition;
 use App\Models\TicketFieldValue;
+use App\Models\TicketLink;
+use App\Models\TicketLinkType;
 use App\Models\TicketPriority;
 use App\Models\TicketWorklogEntry;
 use Database\Seeders\BoardColumnSeeder;
@@ -165,4 +167,72 @@ class TicketTest extends TestCase
         $this->assertSame($parentTicket->id, $childTicket->fresh()->parentTicket?->id);
         $this->assertSame([$childTicket->id], $parentTicket->fresh()->childTickets->modelKeys());
     }
+
+    /**
+     * Ensure the blocked flag is cast to a boolean for board and detail rendering.
+     */
+    public function test_ticket_blocked_state_is_cast_to_boolean(): void
+    {
+        $ticket = Ticket::factory()->create([
+            'blocked_comment' => 'Waiting for environment access.',
+            'is_blocked' => 1,
+        ]);
+
+        $freshTicket = $ticket->fresh();
+
+        $this->assertTrue($freshTicket->is_blocked);
+        $this->assertSame('Waiting for environment access.', $freshTicket->blocked_comment);
+    }
+
+    /**
+     * Ensure tickets expose incoming and outgoing link relations.
+     */
+    public function test_ticket_link_relations_are_available(): void
+    {
+        $project = Project::factory()->create([
+            'key' => 'CORE',
+        ]);
+
+        app(InitializeProjectTicketMetadata::class)->handle($project);
+
+        $priority = TicketPriority::factory()->for($project)->create([
+            'name' => 'Medium',
+            'position' => 1,
+        ]);
+        $taskType = $project->ticketTypes()->where('system_key', 'task')->firstOrFail();
+
+        $sourceTicket = Ticket::factory()->create([
+            'project_id' => $project->id,
+            'sequence_number' => 1,
+            'ticket_key' => 'CORE-1',
+            'ticket_priority_id' => $priority->id,
+            'ticket_type_id' => $taskType->id,
+        ]);
+        $targetTicket = Ticket::factory()->create([
+            'project_id' => $project->id,
+            'sequence_number' => 2,
+            'ticket_key' => 'CORE-2',
+            'ticket_priority_id' => $priority->id,
+            'ticket_type_id' => $taskType->id,
+        ]);
+        $ticketLinkType = TicketLinkType::factory()->for($project)->create([
+            'label' => 'Relates to',
+            'position' => 1,
+        ]);
+
+        $ticketLink = TicketLink::factory()->create([
+            'source_ticket_id' => $sourceTicket->id,
+            'target_ticket_id' => $targetTicket->id,
+            'ticket_link_type_id' => $ticketLinkType->id,
+        ]);
+
+        $this->assertSame(
+            [$ticketLink->id],
+            $sourceTicket->fresh()->ticketLinksAsSource->modelKeys(),
+        );
+        $this->assertSame(
+            [$ticketLink->id],
+            $targetTicket->fresh()->ticketLinksAsTarget->modelKeys(),
+        );
+    }
 }