Root cause of the simultaneous lane-shas failures on PRs #46 and #47:
workflows installed with unlocked 'uv pip install -e .' against floor-only
specs (numpy>=1.26, ...) while the repo maintains uv.lock — so a PyPI
release landing between runs shifts the runner's resolved set, and the
byte-exact lane SHA pins move with it. Timeline: main lane run green at
23:40Z, both PR runs (diffs no lane executes) red after 00:02Z; the
identical trees verify 9/9 locally against the locked venv, and
'uv lock --check' is clean.
All six workflows now 'uv sync --locked' (--extra dev where [dev] was
installed) — CI tests the locked universe, so lane pins can only move when
code moves. Locked-sync also fails loudly on a stale lock instead of
silently resolving fresh.
Self-validating: this PR's own lane-shas run uses this branch's workflow.
[Verification]: smoke suite passed locally (175 passed); lane repro on the
failing PRs' tree: 9/9 pinned SHAs; uv lock --check clean.
Adds a scheduled GitHub Actions workflow that runs
`core demo learning-arc --json`, writes the report to
contemplation/runs/<stamp>.json, and opens a PR against main.
Operator review on the PR is the ratification gate — preserves the
HITL invariant from ADR-0150/0152.
Workflow stays disabled until repo variable CONTEMPLATION_ENABLED
is set to "true" (soft kill switch in repo settings). Default
cadence is nightly; ADR includes a budget table for the 3000
Linux minutes/month available on GitHub Pro.
CI never:
- commits to main directly
- mutates corpora/ or packs/
- ratifies proposals
- registers recognizers
CI only writes a report file under contemplation/runs/ and proposes
the diff via PR. Determinism check (first-run verification): local
+ CI runs at same SHA must byte-match on proposal_id / trace_hash.
Out of scope (noted in ADR): persisted engine_state across CI runs,
auto-merge, cross-runner determinism, recognizer growth from CI
synthetic traffic.
To enable:
1. Repo Settings → Variables → CONTEMPLATION_ENABLED=true
2. Actions → contemplation → Run workflow
3. Review the resulting PR before merging
