implemented step 07

- added categories for 1. step in wizard

src/Actions/ProjectActions.php

@@ -120,4 +120,29 @@ class ProjectActions
 
 		return $projectData;
 	}
+
+	/**
+	 * Saves data for a specific wizard step.
+	 */
+	public function saveStep(string $userId, string $projectId, int $step, array $data): bool
+	{
+		$projectPath = "projects/{$projectId}.json";
+		$projectData = $this->getProjectStatus($userId, $projectId);
+
+		switch ($step) {
+			case 1:
+				if (!isset($data['business_category'])) {
+					throw new Exception("Missing business_category data.", 400);
+				}
+				$projectData['wizard_data']['business_category'] = $data['business_category'];
+				break;
+			
+			// More steps will be added later
+		}
+
+		$projectData['current_step'] = max($projectData['current_step'], $step + 1);
+		$projectData['updated_at'] = date('c');
+
+		return $this->storage->put($projectPath, $projectData);
+	}
 }