feat: add chat topic

docs/API.md

@@ -24,8 +24,8 @@ All meditation calls send `Authorization: Bearer <meditationToken>` and `Accept:
 - POST `/media/:id` — update (same multipart fields). Playable URL is in **`external_url`**; thumbnail in nested **`image.url`**.
 - GET `/media/popular`, `/media/recently-played`, `/media/saved`
 - POST `/media/:id/play`, `/media/:id/save`, `/media/:id/note`, `/media/:id/feedback` (stars, content)
-- Categories: GET/POST/PUT/DELETE `/categories` (multipart name)
-- Sub-categories: GET/POST `/sub-categories`, PUT/DELETE `/sub-categories/:id` (category_id, name)
+- Categories: GET `/categories`, POST `/categories` (multipart: name, description, `icon`(image file)), PUT `/categories/:id` (file → POST + `_method=PUT`), DELETE `/categories/:id`. Icon path in `icon`.
+- Sub-categories: GET/POST `/sub-categories` (category_id, name, description), PUT/DELETE `/sub-categories/:id` (json: category_id, name, description)
 
 ### Track (music)
 - Categories: GET `/music-categories/:id`, POST `/music-categories`, PUT/DELETE `/music-categories/:id` (name, description, order, image_id, is_active)
@@ -75,6 +75,9 @@ All meditation calls send `Authorization: Bearer <meditationToken>` and `Accept:
 - Saves: POST `/saves/toggle`, `/saves/save`, `/saves/unsave`, `/saves/check` (type, id), GET `/saves/my-saved?type=`
 - Ratings: GET/POST/DELETE `/ratings/:type/:id` (stars), GET `/ratings/:type/:id/user`
 
+### Chat topics (موضوعات پیشنهادی گفتگو با مشاور)
+- GET `/chat-topics`, GET `/chat-topics/:id`, POST `/chat-topics`, PUT/DELETE `/chat-topics/:id` (json: title, description, order, is_active)
+
 ### Misc
 - GET `/leader-board`
 - GET `/profile`