Refactor RequisitionShop component: remove unused GM panel logic, enhance error handling, and improve player purchase flow. Update tests for RequisitionShop to cover new functionality and ensure proper rendering. Implement curl-based HTTP requests in GM and player tests for better compatibility. Add script to ensure GM user exists in the database with appropriate privileges.

.vscode/tasks.json

@@ -0,0 +1,15 @@
+{
+	"version": "2.0.0",
+	"tasks": [
+		{
+			"label": "build",
+			"type": "shell",
+			"command": "npm run build",
+			"group": "build",
+			"problemMatcher": [
+				"$eslint-stylish"
+			],
+			"isBackground": false
+		}
+	]
+}