QueryParseError is now a ValidationError subclass — the global handler
answers it as a 400 and per-route translations become unnecessary (the
existing ones keep working). PageQuery parses, defaults, and bounds
page/per_page in one place; admin audit-logs, activity feed, error logs,
and telemetry events adopt it (telemetry keeps its 200 cap). git.py and
source_connections.py keep hand-parsed params deliberately — they proxy
pagination to Gitea/GitHub/GitLab/Bitbucket, not to DB queries.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>