An audit found 102 FK columns with no index — every join, per-parent
listing, and the delete cascades from _delete_cascade_policy scanned
whole tables on them (deployments.app_id, audit_logs.user_id,
dns_records.zone_id, webhook_logs.webhook_id, ...). All FK columns now
declare index=True; migration 096 creates the same indexes on existing
installs, deriving the list from the live schema at upgrade time (so
it is idempotent and cannot drift from what an install actually has).
Ratchet: test_every_fk_column_is_indexed pins the rule with no
allowlist — a new FK column is born indexed or the build fails.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Introduces a full-stack Test Sandbox feature to run distro matrix tests in Docker from the UI: new backend API/service, sandbox_runs model + migration, run/log endpoints, and a new frontend page with mode selection, run history, live polling, cancel, and per-distro logs.
Also adds ARM64 scripts CI coverage (ubuntu-24.04-arm) and strengthens install/test automation for minimal images and overlay rebuilds: early curl/bootstrap index refresh, stricter venv validation, release-venv glibc fallback, Node reprovisioning on source fallback, rsync --delete overlay behavior, npm bootstrap in VM install, Windows tar pinning in PowerShell harness, plus updated test docs and distro coverage notes.