Server POST /tasks/{id}/merge no longer has record/enforce/off:
hard_mode_from_env and HARD_MODES deleted (not re-defaulted),
handler always evaluates the hard gate, env CLOUD_MERGE_GATE_MODE
and body merge_gate_mode are ignored server-side. The record
'no-evidence passes' and 'unprotected+confirm passes with
merge_gate_risk' server paths are gone with the dead risk audit;
no production caller justified keeping them (only production
caller of the non-hard evaluator was the merge handler itself;
audit_loop_wiring already used the hard gate). cloud/merge_gate
pure functions keep their #209 semantics but are documented as
non-server: they are no longer wired to any endpoint.
Server-level record/enforce/off tests rewritten to the new
behavior (renamed, not deleted silently); pure-function tests
unchanged.
(cherry picked from commit 08e75edbd6d04701965c5db951fa054cfbb75bb0)
Reconcile-port: handler_lifecycle.py hunks redirected into cloud/server.py _merge_task (target keeps 6-mixin split; mixin file does not exist here); handler_support.py kept at HEAD (its A1 hunk is a docstring of _validate_hard_gate_body, ported to server.py copy); test mock paths cloud.handler_lifecycle.* rewritten to cloud.server.*.
Track 3 decisions (audit_pushback) now really block the server merge
endpoint and really land on the track 4 hash chain, via the new
cloud/audit_wiring.py translation layer:
- POST /tasks/{id}/merge ANDs the chain pushback block
(merge_blocked/release_blocked/blocked_by=audit_pushback/round/
failed_checks, replayed per module+contract version) with the
hard gate's five checks in every gate mode; either side blocks
-> 409, status unchanged, audit_pushback_blocked appended to
merge_gate.blocks. Ledger reads that fail (other than a missing
audit_ledger table) fail closed to 409.
- Every pushback/fix/re-audit/rebuild/escalation step is written
to the ledger with track 3 fields authoritative and track 4
storage authoritative; CONDITIONAL maps to fail at the boundary
with the original preserved, history never rewritten.
- Hard-gate 409 blocks codes feed pushback packages machine-first
(branch protection survives as its own extra check).
- Re-audit QA guard: a claimed pass with un-rerun or failed QA
links never reaches the chain.
- Track 4 compat: one audit_wiring_event action for escalation /
blocked-quota / audit-sample kinds, counted in the timeline.
- Resolved tension (documented in audit_wiring.py): a meta-review
correction to fail re-blocks at once, but a correction to pass
does NOT unblock by itself -- track 3 schedules a re-audit,
it does not release the gate; track 4 failure counts still use
effective verdicts, so the two views may disagree while a
re-audit is pending.
Tests: cloud/tests/test_audit_wiring.py (18 items), incl. a real
HTTP end-to-end chain (fail -> 409 -> fix -> re-audit pass ->
200) and a separate QA-link chain test.
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