feat(subscription): implement resource quota management based on subscription plans

migrations/Version20260804155309.php

@@ -0,0 +1,35 @@
+<?php
+
+declare(strict_types=1);
+
+namespace DoctrineMigrations;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+/**
+ * Per-plan resource quota (`subscription_plans.max_resources`).
+ *
+ * free = 1, basic = 3, professional = -1 (unlimited). The default of 1 is the
+ * conservative one: an unknown/custom plan must not silently grant unlimited.
+ */
+final class Version20260804155309 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return 'Add max_resources quota to subscription plans';
+    }
+
+    public function up(Schema $schema): void
+    {
+        $this->addSql('ALTER TABLE subscription_plans ADD max_resources SMALLINT NOT NULL DEFAULT 1');
+        $this->addSql("UPDATE subscription_plans SET max_resources = 1 WHERE name = 'free'");
+        $this->addSql("UPDATE subscription_plans SET max_resources = 3 WHERE name = 'basic'");
+        $this->addSql("UPDATE subscription_plans SET max_resources = -1 WHERE name = 'professional'");
+    }
+
+    public function down(Schema $schema): void
+    {
+        $this->addSql('ALTER TABLE subscription_plans DROP max_resources');
+    }
+}