specs/orchestrator.qnt models control.py: states, gate, pending
questions, comment cursors, publish intents and the worker queue, with
operator messages, Gitea comments, work outcomes (exceptions included)
and a crash at any point interleaving freely. Eight properties.
Seven counterexamples, each written out as a trace in
specs/orchestrator_scenarios.qnt and reproduced against the real code in
nisse-dev/tests/test_quint_counterexamples.py (xfail, strict, until
fixed):
1-4 an approval or feedback lands on a plan the operator had not seen:
a double 'approve', 'approve rev-1' meant for the architecture,
approving on both channels, and 'approve' plus an afterthought;
5 a crash after the PR opens but before PR_OPEN publishes again and
cannot get back to PR_OPEN;
6 a crash while answering a review comment loses it silently;
7 'project complete' leaves the plan issue open.
no_stranding, await_input_has_a_question and execution_needs_approval
held over 200,000 random traces of 40 steps, and under Apalache's
exhaustive check to depth 8, which does find counterexample 1 at that
depth. No behaviour changes here.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PPQ14L3LikyefCMFBqEbKE
