Introduces a 'thumbnail' field to the Canvas model and updates all storage backends (AWS S3, filesystem, memory, and SQLite) to handle storing and retrieving this field. Also updates the API handler to accept and save the thumbnail, and switches SQLite driver to modernc.org/sqlite for improved compatibility. Updates .gitignore to exclude .db files.
To troubleshoot reported issues, we add more debugging outputs in
the logging. This includes detailed, structured logs in the Create
and FindID methods to provide better traceability and debuggability.
These changes help diagnose issues by providing detailed context in
the logs, which should improve the ability to identify and resolve
problems.
See also: #9
Yuzhong Zhang