/**
 * @swagger
 * tags:
 *   name: Captcha
 *   description: 验证码API
 */
/**
 * @swagger
 * /captcha/generate:
 *   get:
 *     summary: 生成图形验证码
 *     tags: [Captcha]
 *     responses:
 *       200:
 *         description: 成功生成验证码
 *         content:
 *           application/json:
 *             schema:
 *               type: object
 *               properties:
 *                 success:
 *                   type: boolean
 *                   example: true
 *                 data:
 *                   type: object
 *                   properties:
 *                     captchaId:
 *                       type: string
 *                       description: 验证码唯一ID
 *                     image:
 *                       type: string
 *                       description: Base64编码的SVG验证码图片
 *       500:
 *         description: 服务器错误
 */
/**
 * @swagger
 * /captcha/verify:
 *   post:
 *     summary: 验证用户输入的验证码
 *     tags: [Captcha]
 *     requestBody:
 *       required: true
 *       content:
 *         application/json:
 *           schema:
 *             type: object
 *             required:
 *               - captchaId
 *               - captchaText
 *             properties:
 *               captchaId:
 *                 type: string
 *                 description: 验证码唯一ID
 *               captchaText:
 *                 type: string
 *                 description: 用户输入的验证码
 *     responses:
 *       200:
 *         description: 验证码验证成功
 *         content:
 *           application/json:
 *             schema:
 *               type: object
 *               properties:
 *                 success:
 *                   type: boolean
 *                   example: true
 *                 message:
 *                   type: string
 *                   example: 验证码验证成功
 *       400:
 *         description: 验证码错误或已过期
 *         content:
 *           application/json:
 *             schema:
 *               type: object
 *               properties:
 *                 success:
 *                   type: boolean
 *                   example: false
 *                 message:
 *                   type: string
 *                   example: 验证码错误
 *       500:
 *         description: 服务器错误
 */