- Implemented CRUD operations for order attachments, including adding, listing, downloading, and deleting.
- Updated `db_object_t` and `attachments` to enhance object-attachment interactions with new methods for formatting, creating, and managing attachments.
- Added new routes (`/orders/attachments` and `/attachments/upload`) for attachment-related functionality.
- Adjusted `file_server.php` to handle temp file downloads and attachment storage.
- Improved typing and error handling across attachment helper methods and classes.
- Added `attachments` module for creating, reading, updating, and deleting attachments.
- Introduced new classes such as `attachments`, `attachment_store`, `attachment_content`, and `attachment_relation` to handle attachment operations and their relationships.
- Integrated `attachments` features into `db_object_t` for seamless object-attachment interactions.
- Added `attachments_i` interface for standardized attachments module operations.
- Created `attachmentsRoute` for defining endpoints related to attachments.
- Enabled module configuration through `attachments_enabled_c` for attachment management control.