Items 1 & 2 of the #351 remainder.
Item 1 — the flat/nested generative property tests now read SEED and
NUM_RUNS from PROPERTY_SEED / PROPERTY_NUM_RUNS (via an envInt helper that
honors an explicit 0 and falls back to the current defaults —
20250705/300 flat, /100 nested — on unset/empty/non-numeric). New
.github/workflows/nightly-property.yml runs the generative suite daily
(and on workflow_dispatch) with a random seed and NUM_RUNS≈5000; on
failure it files a Gitea issue containing fast-check's shrunk
counterexample (jq-escaped, dedup'd by title). No build step — the suite
imports the converter from src/, so a tsc error can't masquerade as a
property failure.
Item 2 — new packages/prosemirror-markdown/README.md documents the
counterexample process (surface -> shrink -> permanent fixture in
test/fixtures/counterexamples/ + counterexamples.test.ts -> fix the
converter, never weaken a property; maintainer-approved ACCEPTED/allowlist
entries carry a reason) plus the two golden layers, the coverage
allowlist, and how to run with the env knobs. Linked from AGENTS.md.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
agent_coder
ce9f1a8980