docs: "## Sync Progress with Highlights and Notes\n\nSynchronizes reading progress with separate highlights and notes arrays.\n\n**Method:** POST\n\n**Endpoint:** /api/sync/koreader/progress\n\n**Authentication:** Bearer token\n\n**Request Body:**\n- `library_id` (string, optional): Library UUID\n- `books` (array): Books with progress and annotations\n  - `uuid`, `title`, `authors`, `progress`, `percentage`, `last_read`\n  - `highlights` (array): Text highlights\n    - `datetime` (string): Creation timestamp\n    - `text` (string): Highlighted text content\n    - `chapter` (integer): Chapter number\n    - `pos0` (string): EPUB CFI start\n    - `pos1` (string): EPUB CFI end\n    - `page_start` (integer): Start page\n    - `page_end` (integer): End page\n    - `color` (string, optional): Highlight color\n  - `notes` (array): Notes\n    - `datetime` (string): Creation timestamp\n    - `text` (string): Note content\n    - `chapter` (integer): Chapter number\n    - `pos0` (string, optional):\
  \ Related position\n\n**Response:**\n- `progress_synced` (boolean): Progress sync status\n- `highlights_synced` (integer): Highlights synced\n- `notes_synced` (integer): Notes synced\n- `conflicts_resolved` (integer): Conflict count\n- `timestamp` (string): Sync timestamp\n\n**KOReader Annotation Model:**\n- **Separate arrays**: Highlights and notes stored separately\n- **Linked**: Notes can reference highlights\n- **Rich metadata**: Timestamps, positions, page numbers\n- **Flexible**: Supports complex annotations\n\n**Highlight Features:**\n- Multi-color highlighting (via plugins)\n- Precise text selection with EPUB CFI\n- Page range tracking\n- Chapter references\n- Timestamps for sorting\n- Full text preserved\n\n**Note Features:**\n- Free-form text notes\n- Can be standalone or attached\n- Chapter-based organization\n- Timestamped\n- Longer form than highlights\n- Support for markdown (some versions)\n\n**Color Support (via plugins):**\n- Yellow: Default highlight\n- Green: Important\
  \ passages\n- Blue: Key concepts\n- Red: Critical information\n- Orange: Interesting quotes\n- Custom colors available\n\n**Sync Advantages:**\n- Separation allows granular control\n- Highlights sync without notes\n- Notes sync independently\n- Better conflict resolution\n- Efficient for large annotation sets\n\n**Use Cases:**\n- Academic research\n- Study groups\n- Content analysis\n- Personal knowledge management\n- Sharing insights"
http:
  body:
    json:
      books:
      - authors:
        - Author Name
        highlights:
        - chapter: 4
          datetime: '2026-01-30T19:50:00Z'
          page_end: 79
          page_start: 78
          pos0: epubcfi(/6/4/2:20)
          pos1: epubcfi(/6/4/2:30)
          text: Important passage
        last_read: '2026-01-30T20:00:00Z'
        notes:
        - chapter: 4
          datetime: '2026-01-30T19:52:00Z'
          text: My note about this chapter
        percentage: 0.6
        progress: 0.6
        title: Book Title
        uuid: '{{media_item_id}}'
      library_id: optional-library-uuid
    type: json
  headers:
  - key: Content-Type
    value: application/json
  method: POST
  url: '{{base_url}}/api/sync/koreader/progress'
  auth:
    type: bearer
    token: '{{koreader_device_token}}'
info:
  name: Sync Progress - With Highlights and Notes
  seq: 4
  type: http