feat: AddUserTitle implemented

api/paths/users-id-titles.yaml

@@ -87,3 +87,55 @@ get:
       description: Request params are not correct
     '500':
       description: Unknown server error
+
+post:
+  summary: Add a title to a user
+  description: User adding title to list af watched, status required
+  operationId: addUserTitle
+  parameters:
+    - name: user_id
+      in: path
+      required: true
+      schema:
+        type: integer
+        format: int64
+      description: ID of the user to assign the title to
+      example: 123
+  requestBody:
+    required: true
+    content:
+      application/json:
+        schema:
+          $ref: '../schemas/UserTitle.yaml'
+  responses:
+    '200':
+      description: Title successfully added to user
+      content:
+        application/json:
+          schema:
+            type: object
+            properties:
+              # success:
+              #   type: boolean
+              #   example: true
+              # error:
+              #   type: string
+              #   nullable: true
+              #   example: null
+              data:
+                  $ref: '../schemas/UserTitleMini.yaml'
+            # required:
+            #   - success
+            #   - error
+    '400':
+      description: Invalid request body (missing fields, invalid types, etc.)
+    '401':
+      description: Unauthorized — missing or invalid auth token
+    '403':
+      description: Forbidden — user not allowed to assign titles to this user
+    '404':
+      description: User or Title not found
+    '409':
+      description: Conflict — title already assigned to user (if applicable)
+    '500':
+      description: Internal server error