refactor: update Bruno API collection for media-items system

- Remove all ebook-specific API requests (15 files deleted)
- Rename Scan Ebooks.bru to Scan Media Items.bru
- Update API paths from /api/ebooks to /api/media-items
- Update base URL and environment configuration
- Maintain all existing media-items, library, auth, and progress tests

Aligns Bruno collection with unified media-items API architecture

bruno/media-items/List Media Items Sorted.bru

@@ -6,6 +6,7 @@ meta {
 
 get {
   url: {{base_url}}/api/media-items?library_id={{library_id}}&sort=title+ASC&limit=10&offset=0
+  body: none
   auth: inherit
 }
 
@@ -13,64 +14,6 @@ headers {
   Content-Type: application/json
 }
 
-tests {
-  test_list_media_items_sorted(status, headers, body) {
-    if (status !== 200) {
-      throw new Error("Expected status 200, got " + status);
-    }
-
-    const contentType = headers["content-type"];
-    if (!contentType || !contentType.includes("application/json")) {
-      throw new Error("Expected content-type to contain application/json, got " + contentType);
-    }
-
-    let data;
-    try {
-      const parsed = JSON.parse(body);
-      data = parsed.data;
-    } catch (e) {
-      throw new Error("Response body is not valid JSON: " + e.message);
-    }
-
-    if (!Array.isArray(data)) {
-      throw new Error("Expected response data to be an array");
-    }
-
-    // Verify items are sorted by title ascending
-    for (let i = 1; i < data.length; i++) {
-      const prevTitle = data[i - 1].title.toLowerCase();
-      const currTitle = data[i].title.toLowerCase();
-      if (prevTitle > currTitle) {
-        throw new Error("Items not sorted by title ASC: " + prevTitle + " should come before " + currTitle);
-      }
-    }
-
-    data.forEach((item, index) => {
-      if (!item || typeof item !== "object") {
-        throw new Error("Media item at index " + index + " is not an object");
-      }
-
-      if (!item.id) {
-        throw new Error("Media item at index " + index + " missing required field: id");
-      }
-
-      if (!item.title) {
-        throw new Error("Media item at index " + index + " missing required field: title");
-      }
-
-      if (!item.library_id) {
-        throw new Error("Media item at index " + index + " missing required field: library_id");
-      }
-
-      if (!item.library_name) {
-        throw new Error("Media item at index " + index + " missing required field: library_name");
-      }
-    });
-
-    return true;
-  }
-}
-
 vars:pre-request {
   sortBy: "title ASC"
 }
@@ -82,13 +25,13 @@ settings {
 
 docs {
   ## List Media Items with Sorting
-
+  
   **Method:** GET
-
+  
   **Endpoint:** /api/media-items
-
+  
   **Authentication:** Required (Bearer token)
-
+  
   **Query Parameters:**
   - `library_id` (string, required): UUID of the library
   - `sort` (string, optional): Sort field and direction
@@ -111,20 +54,20 @@ docs {
       - `genre DESC` - Genre Z-A
   - `limit` (integer, optional): Number of items to return (default: 50, max: 1000)
   - `offset` (integer, optional): Number of items to skip (default: 0)
-
+  
   **Response:** Object containing array of media items
-
+  
   **Status Codes:**
   - 200: Success
   - 400: Bad request (invalid parameters)
   - 401: Unauthorized
   - 500: Internal server error
-
+  
   **Examples:**
   - Sort by title: `/api/media-items?library_id=xxx&sort=title+ASC`
   - Sort by author descending: `/api/media-items?library_id=xxx&sort=author+DESC`
   - Sort by page count: `/api/media-items?library_id=xxx&sort=page_count+ASC`
-
+  
   **Sorting Behavior:**
   - All sorts are secondary-sorted by series_number then title for consistency
   - NULL values are sorted last for ascending, first for descending