9.2
Add new system for defining and running queue-processing workers
ruff: Fix SIM117 Use a single `with` statement with multiple contexts.
ruff: Fix UP006 Use `list` instead of `List` for type annotation.
ruff: Fix UP035 Import from `collections.abc`, `typing` instead.
markdown: Show thumbnails for uploaded images.
ruff: Fix UP007 Use `X | Y` for type annotations.
ruff: Fix PLR6104 Use `+=` to perform an augmented assignment directly.
thumbnail: Resolve a race condition when rendering messages.