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/library/Get Library Types.bru

@@ -6,6 +6,7 @@ meta {
 
 get {
   url: {{base_url}}/api/libraries/types
+  body: none
   auth: inherit
 }
 
@@ -13,48 +14,6 @@ headers {
   Content-Type: application/json
 }
 
-tests {
-  test_get_library_types_success(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);
-    }
-
-    // Verify response body is valid JSON and has expected structure
-    let data;
-    try {
-      data = JSON.parse(body);
-    } catch (e) {
-      throw new Error("Response body is not valid JSON");
-    }
-
-    if (!Array.isArray(data)) {
-      throw new Error("Expected response body to be an array");
-    }
-
-    // Validate each library type
-    data.forEach((type, index) => {
-      if (!type || typeof type !== "object") {
-        throw new Error("Library type at index " + index + " is not an object");
-      }
-      
-      if (!type.id) {
-        throw new Error("Library type at index " + index + " missing required field: id");
-      }
-      
-      if (!type.name) {
-        throw new Error("Library type at index " + index + " missing required field: name");
-      }
-    });
-
-    return true;
-  }
-}
-
 settings {
   encodeUrl: true
   timeout: 0
@@ -80,4 +39,4 @@ docs {
   - 200: Success
   - 401: Unauthorized
   - 500: Internal server error
-}
+}