docs: Add full Swagger JSDoc coverage

server/api/controllers/users/update-username.js

@@ -3,6 +3,66 @@
  * Licensed under the Fair Use License: https://github.com/plankanban/planka/blob/master/LICENSE.md
  */
 
+/**
+ * @swagger
+ * /api/users/{id}/username:
+ *   patch:
+ *     summary: Update user username
+ *     description: Updates a user's username. Users must provide a current password when updating their own username (unless they are SSO users with `oidcIgnoreUsername` enabled). Admins can update any user's username without the current password.
+ *     tags:
+ *       - Users
+ *     parameters:
+ *       - in: path
+ *         name: id
+ *         required: true
+ *         description: ID of the user whose username to update
+ *         schema:
+ *           type: string
+ *           example: 1357158568008091264
+ *     requestBody:
+ *       required: true
+ *       content:
+ *         application/json:
+ *           schema:
+ *             type: object
+ *             properties:
+ *               username:
+ *                 type: string
+ *                 minLength: 3
+ *                 maxLength: 16
+ *                 pattern: '^[a-zA-Z0-9]+((_|\.)?[a-zA-Z0-9])*$'
+ *                 nullable: true
+ *                 description: Unique username for user identification
+ *                 example: john_doe
+ *               currentPassword:
+ *                 type: string
+ *                 maxLength: 256
+ *                 description: Current password (required when updating own username)
+ *                 example: SecurePassword123!
+ *     responses:
+ *       200:
+ *         description: Username updated successfully
+ *         content:
+ *           application/json:
+ *             schema:
+ *               type: object
+ *               required:
+ *                 - item
+ *               properties:
+ *                 item:
+ *                   $ref: '#/components/schemas/User'
+ *       400:
+ *         $ref: '#/components/responses/ValidationError'
+ *       401:
+ *         $ref: '#/components/responses/Unauthorized'
+ *       403:
+ *         $ref: '#/components/responses/Forbidden'
+ *       404:
+ *         $ref: '#/components/responses/NotFound'
+ *       409:
+ *         $ref: '#/components/responses/Conflict'
+ */
+
 const bcrypt = require('bcrypt');
 
 const { idInput } = require('../../../utils/inputs');