10.0-dev
ruff: Fix PLR6104 Use `+=` to perform an augmented assignment directly.
settings: Rework how push notifications service is configured.
models: Migrate ids of all non-Message-related tables to bigint.
ruff: Fix UP035 Import from `collections.abc`, `typing` instead.
Create "analytics" app with activity reports.
ruff: Fix UP007 Use `X | Y` for type annotations.