harness.meta.HookCtx (frozen): .domain, .base_url, .meta (RecipeMeta), .deps
(provisioned dep creds from $CCCI_DEPS_FILE or None), .op (current lifecycle op
or None); built via meta.hook_ctx() at each hook call site.
All recipe callables now take ctx: EXTRA_ENV(ctx), UPGRADE_EXTRA_ENV(ctx),
READY_PROBE(ctx), BACKUP_VERIFY(ctx), SCREENSHOT(page, ctx), ops.py pre_<op>(ctx).
Dict-valued EXTRA_ENV/UPGRADE_EXTRA_ENV unchanged (only the callable signature
moved). Call sites converted: deploy_app env shaping, perform_upgrade,
wait_ready_probes (gains op=), _perform_op BACKUP_VERIFY, screenshot.capture,
_run_pre_hook.
Legacy signatures fail FAST with a clear migration message: the registry carries
hook_params per hook key, enforced at meta.load() (MetaError names the old vs new
signature); ops.py pre-op hooks get the same check at the orchestrator call site
(meta.check_hook_signature) — no silent TypeError mid-run.
Migrated every in-repo user mechanically (17 ops.py files; cryptpad/lasuite-*/
mailu EXTRA_ENV; mumble+lasuite-drive READY_PROBE; ghost/discourse BACKUP_VERIFY)
— seeded values, probes and assertions byte-identical (domain -> ctx.domain;
keycloak pre_restore's meta arg -> ctx.meta).
Unit tests: hook_ctx field contract, ctx.deps from the run deps file, legacy-
signature MetaError (READY_PROBE/EXTRA_ENV/SCREENSHOT + pre-op checker), ctx
signatures accepted. Docs table regenerated (signature docs in key docs).
Verified on cc-ci: cc-ci-run -m pytest tests/unit -q -> 180 passed; scripts/lint.sh -> PASS.
Push builds have been RED on the lint step since ~build 209 from accumulated
formatting drift. This is the mechanical cleanup: ruff format + ruff --fix
(UP038 isinstance unions, SIM105 contextlib.suppress, UP031 f-strings, SIM115
tempfile context manager), shfmt -i 2 -ci, nixpkgs-fmt/statix/deadnix (merged
attrsets, dropped unused lib args), yamllint, and shell quoting fixes in
tests/lasuite-docs/setup_custom_tests.sh. No behaviour changes intended;
lint: PASS, unit tests: 138 passed.
Root cause of the 2 failing custom tests: TLS_FLAVOR=notls → dovecot refuses plaintext auth over
network 143, so host-side IMAP login/auth isn't a meaningful signal. Smoke2 PROVED the in-container
path: sendmail (postfix container) local-injects a marker mail → doveadm search (imap container) finds
it in INBOX. test_mail_flow now exercises the real postfix→rspamd→dovecot deliver/store/fetch via
exec_in_app(service=smtp/imap). Dropped test_imap_login (network plaintext-auth disallowed under notls).
test_mailbox (create+config-export read-back) unchanged. PARITY.md updated.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
