test: Update API collection for rating system changes

- Update rating examples to use 1-10 scale
- Document half-star precision in API collections
- Add rating conversion examples for testing
- Update Get Ebook Rating docs with scale explanation
- Update Create/Update Rating with new validation rules

bruno/ebooks/Create-Update Ebook Rating.bru

@@ -12,7 +12,7 @@ post {
 
 body:json {
   {
-    "rating": 4
+    "rating": 7
   }
 }
 
@@ -32,18 +32,24 @@ docs {
   - `id` (string): Ebook UUID
 
   **Request Body:**
-  - `rating` (number, required): Rating value (1-5)
+  - `rating` (number, required): Rating value (1-10, where odd numbers = half-stars)
+    - 1,3,5,7,9 = 0.5,1.5,2.5,3.5,4.5 stars (half-star precision)
+    - 2,4,6,8,10 = 1,2,3,4,5 stars (full stars)
+  
+  **Example Request:**
+  - `"rating": 7` = 3.5 stars (frontend display)
+  - `"rating": 8` = 4.0 stars (frontend display)
 
   **Response:**
   - `id` (string): Rating UUID
   - `ebook_id` (string): Ebook UUID
   - `user_id` (string): User UUID
-  - `rating` (number): Rating value (1-5)
+  - `rating` (number): Rating value (1-10)
   - `created_at` (string): Creation timestamp
   - `updated_at` (string): Last update timestamp
 
   **Error Responses:**
-  - 400: Invalid rating value
+  - 400: Invalid rating value (must be 1-10)
   - 401: Invalid authentication
   - 404: Ebook not found
 }