docs: update comprehensive API documentation and project guides

This commit updates all documentation files throughout the project:

- Updated IMPLEMENTATION_PLAN.md with new implementation details
- Updated PROJECT_GUIDELINES.md with coding standards and practices
- Updated README.md with current project information
- Updated SCREENSHOT_AUTOMATION.md with new automation details
- Added TEST_DATA.md with test fixtures data
- Updated cover_image_serving_plan.md with static URL patterns

Documentation API updates:
- Updated API reference documentation for all endpoints including:
  - Authentication (login, logout, register, refresh_token)
  - Book matching (auto_link, bulk_link, link_book, search)
  - Collections (CRUD operations, shelf mappings, auto-assign rules)
  - Conflicts (bulk operations, resolve/dismiss)
  - Devices (registration, approval, shelf management)
  - Highlights (create, update, delete, get)
  - Kobo sync (bookmark, markup, initialization, sync)
  - KOReader sync (library, metadata, bookmarks, progress)
  - Libraries (CRUD, folders, media items, stats)
  - Media items (bulk operations, CRUD)
  - Notes (CRUD operations)
  - OPDS (acquisition, feeds, publication)
  - Progress (reading progress tracking)
  - Queue (device queue management)
  - Ratings (star ratings)
  - Scanner (watch mode, scan operations)
  - Sync protocols (Kobo, KOReader)
  - Users (profile, password, admin operations)
  - WebSocket protocols

- Updated user guides (admin, dashboard, settings, sync)
- Updated device setup guides (Kobo, KOReader)
- Updated developer guides (testing, contributing, operations)
- Updated scripts/README.md

docs/developer/api/media-items/create_media_item.md

@@ -18,31 +18,31 @@ See [Library API documentation](../libraries/) for more details.
 
 ## Request Body
 
-| Field | Type | Required | Description |
-|--------|------|-----------|-------------|
-| library_id | string (UUID) | Yes | Library UUID to add the media item to |
-| title | string | Yes | Media item title (1-500 characters) |
-| author | string | No | Author name |
-| isbn | string | No | ISBN number |
-| description | string | No | Description or summary |
-| file_path | string | Yes | Path to the media file |
-| file_size | integer | Yes | Size of the file in bytes |
-| mime_type | string | Yes | MIME type of the file |
-| cover_image_path | string | No | Path to the cover image |
-| series | string | No | Series name |
-| series_number | integer | No | Number in the series |
-| tags | array of strings | No | Tags (auto-normalized) |
-| asin | string | No | Amazon ASIN |
-| date_published | string | No | Publication date |
-| publisher | string | No | Publisher name |
-| contributors | array of strings | No | Contributors (auto-normalized) |
+| Field            | Type             | Required | Description                           |
+| ---------------- | ---------------- | -------- | ------------------------------------- |
+| library_id       | string (UUID)    | Yes      | Library UUID to add the media item to |
+| title            | string           | Yes      | Media item title (1-500 characters)   |
+| author           | string           | No       | Author name                           |
+| isbn             | string           | No       | ISBN number                           |
+| description      | string           | No       | Description or summary                |
+| file_path        | string           | Yes      | Path to the media file                |
+| file_size        | integer          | Yes      | Size of the file in bytes             |
+| mime_type        | string           | Yes      | MIME type of the file                 |
+| cover_image_path | string           | No       | Path to the cover image               |
+| series           | string           | No       | Series name                           |
+| series_number    | integer          | No       | Number in the series                  |
+| tags             | array of strings | No       | Tags (auto-normalized)                |
+| asin             | string           | No       | Amazon ASIN                           |
+| date_published   | string           | No       | Publication date                      |
+| publisher        | string           | No       | Publisher name                        |
+| contributors     | array of strings | No       | Contributors (auto-normalized)        |
 
 ## Tag/Contributor Normalization
 
 Tags and contributors are automatically normalized:
 
 - **Tags**: Titlecased, punctuation preserved, case-insensitive deduplication
-- **Contributors**: Original casing and punctuation preserved, case-insensitive deduplication  
+- **Contributors**: Original casing and punctuation preserved, case-insensitive deduplication
 - **Search fields**: Auto-generated for case-insensitive search
 
 ### Example Request
@@ -92,12 +92,12 @@ Tags and contributors are automatically normalized:
 
 ## Error Responses
 
-| Code | Description |
-|------|-------------|
-| 400 | Invalid request data OR library has no folders |
-| 401 | Invalid or expired token |
-| 403 | User is not an admin |
-| 404 | Library not found |
+| Code | Description                                    |
+| ---- | ---------------------------------------------- |
+| 400  | Invalid request data OR library has no folders |
+| 401  | Invalid or expired token                       |
+| 403  | User is not an admin                           |
+| 404  | Library not found                              |
 
 ### 400 - Library Has No Folders