test: improve Bruno API collection formatting and automation

This commit improves the Bruno API collection with better formatting,
updated test environment variables, and automation scripts for easier
API testing workflow.

## Environment Updates

- bruno/environments/Bookhoard.yml: Updated test IDs for library_id
  and job_id to reflect latest test database state

## Formatting Improvements

Updated all Bruno collection files with consistent formatting:
- bruno/highlights/Create Media Highlight.yml
- bruno/highlights/Update Media Highlight.yml
- bruno/library/Add Library Folder.yml
- bruno/library/Create Library.yml
- bruno/library/Delete Library.yml
- bruno/library/Set Library Visibility.yml
- bruno/media-items/Create Media Item.yml
- bruno/media-items/Create Media Rating.yml
- bruno/media-items/Update Media Item.yml
- bruno/media-items/Update Media Rating.yml
- bruno/media-items/search/Combined Search and Filters.yml
- bruno/notes/Create Media Note.yml
- bruno/notes/Update Media Note.yml
- bruno/progress/Update Reading Progress.yml
- bruno/user/admin/Register Admin User.yml
- bruno/user/auth/Logout User.yml
- bruno/user/auth/Refresh Token.yml

Improvements include:
- Consistent YAML structure and indentation
- Proper multiline string format for JSON bodies
- Moved auth: inherit after headers for consistency
- Added descriptive comments in request bodies

## Automation Features

Added runtime scripts to Create Library.yml:
- after-response script automatically extracts and saves library_id
  from API response to environment variables
- Persists library_id for use in subsequent requests
- Reduces manual copy-paste workflow during testing

Updated request bodies with example data:
- Create Media Item.yml: Added complete example with library_id
  variable reference, title, author, file_path, file_size, mime_type
- Other files: Updated with proper JSON formatting

## Benefits

- More consistent API collection structure
- Automated workflow reduces manual steps
- Better readability with proper YAML formatting
- Example data makes requests easier to understand

bruno/media-items/Create Media Item.yml

@@ -11,7 +11,15 @@ http:
       value: application/json
   body:
     type: json
-    data: ""
+    data: |-
+      {
+        "library_id": "{{library_id}}",
+        "title": "Test Book",
+        "author": "Test Author",
+        "file_path": "/path/to/book.epub",
+        "file_size": 1024,
+        "mime_type": "application/epub+zip"
+      }
   auth: inherit
 
 runtime:

bruno/media-items/Create Media Rating.yml

@@ -11,7 +11,10 @@ http:
       value: application/json
   body:
     type: json
-    data: ""
+    data: |-
+      {
+        "rating": 8
+      }
   auth: inherit
 
 settings:

bruno/media-items/Update Media Item.yml

@@ -11,7 +11,12 @@ http:
       value: application/json
   body:
     type: json
-    data: ""
+    data: |-
+      {
+        "title": "Updated Book Title",
+        "author": "Updated Author",
+        "description": "Updated description"
+      }
   auth: inherit
 
 runtime:

bruno/media-items/Update Media Rating.yml

@@ -11,7 +11,11 @@ http:
       value: application/json
   body:
     type: json
-    data: ""
+    data: |-
+      {
+        "rating": 9,
+        "review": "Updated review text"
+      }
   auth: inherit
 
 runtime:

bruno/media-items/search/Combined Search and Filters.yml

@@ -5,22 +5,22 @@ info:
 
 http:
   method: GET
-  url: "{{base_url}}/api/media-items/search?library_id={{library_id}}&q=foundation&author_filter=asimov&tags_filter=scifi&year_min=1950&year_max=2000&sort=title ASC"
+  url: "{{base_url}}/api/media-items/search?library_id={{library_id}}&q=1984&author_filter=orwell&tags_filter=scifi&year_min=1850&year_max=2000&sort=title ASC"
   params:
     - name: library_id
       value: "{{library_id}}"
       type: query
     - name: q
-      value: foundation
+      value: "1984"
       type: query
     - name: author_filter
-      value: asimov
+      value: orwell
       type: query
     - name: tags_filter
       value: scifi
       type: query
     - name: year_min
-      value: "1950"
+      value: "1850"
       type: query
     - name: year_max
       value: "2000"