The previous Level 1 commit set think=false which broke the cloud
inference check on real PR audits. gpt-oss:120b is a reasoning model;
at think=false on large prompts (40KB diff + 14 claims) it returned
empty content — verified by inspecting verdict 8-8e4ebbe4b38a which
showed "cloud returned unparseable output — skipped" with 13421
tokens used and head:<empty>.
Small-prompt tests passed because the model could respond without
needing to think. Real audits with the full diff + claims context
require the reasoning channel to produce any output at all.
The determinism we need comes from temp=0 (greedy sampling). The
reasoning trace at think=true varies in prose but greedy sampling
converges to the same FINAL classification from identical starting
state, so signatures remain stable.
max_tokens restored to 3000 for the think trace + response.
9-run empirical test showed 20 of 27 audit_lessons signatures were
singletons (count=1) — the cloud producing slightly-different summary
phrasings for the SAME underlying claim on each audit, each hashing
to a fresh signature. That's the creep J flagged — not explosive,
but steady ~2 new sigs per run, unbounded over hundreds of runs.
Root cause: temperature=0.2 + think=true was letting variable prose
leak into the classification output. Fix: temp=0 (greedy sample →
identical input yields identical output on same model version),
think=false (no reasoning trace variance), max_tokens 3000→1500
(tighter bound prevents tail wander).
The compounding policy itself was validated by the 9 runs:
- 7 recurring claims (the legitimate signals) all at conf 0.08-0.20
- ratingSeverity() correctly held them at info (below 0.3 threshold)
- cross-PR signal test separately confirmed conf=1.00 → sev=block
Also: LH_AUDIT_RUNS env so the test can validate with smaller N.
lakehouse/auditor 1 blocking issue: cloud: claim not backed — "the proven escalation ladder with learning context, collects"
Phase 1 — definition-layer over append-only JSONL scratchpads.
auditor/kb_index.ts is the single shared aggregator:
aggregate<T>(jsonlPath, { keyFn, scopeFn, checkFn, tailLimit })
→ Map<signature, {count, distinct_scopes, confidence,
first_seen, last_seen, representative_summary, ...}>
ratingSeverity(agg) — confidence × count severity policy shared
across all KB readers. Kills the "same unfixed PR inflates its
own recurrence score" failure mode by design: confidence =
distinct_scopes/count, so same-scope noise stays below the 0.3
escalation threshold no matter how many times it repeats.
checkAuditLessons now routes through aggregate + ratingSeverity.
Net effect: the recurrence detector's bespoke Map/Set bookkeeping is
gone; same behavior, shared discipline, reusable by scrum/observer.
Also: symbolsExistInRepo now skips files >500KB so the audit can't
get stuck slurping a fixture.
Phase 2 — nine-consecutive audit runner.
tests/real-world/nine_consecutive_audits.ts pushes 9 empty commits,
waits for each verdict, captures the audit_lessons aggregate state
after each run, reports:
- sig_count trajectory (should stabilize, not grow linearly)
- max_count trajectory (same-signature repeat rate)
- max_confidence trajectory (must stay LOW on same-PR noise)
- verdict_stable across runs (must NOT oscillate)
This is the empirical proof that the KB compounds favorably:
noise doesn't escalate itself, and signal stays distinguishable.
Unit-tested both failure modes: same-PR × 9 repeats = conf=0.11
(info); cross-PR × 5 distinct = conf=1.00 (block). The rating
function correctly discriminates.
lakehouse/auditor 1 blocking issue: cloud: claim not backed — "the proven escalation ladder with learning context, collects"
Observed on PR #8 audit (de11ac4): 7 warn findings, all from the
cloud inference check. Investigation showed two distinct bug classes
that weren't "ship bad code", they were "auditor misreads the diff":
1. Cloud flagged "X not defined in this diff / missing implementation"
for symbols like `tailJsonl` and `stubFinding` that ARE defined —
just not in the added lines of this diff. Fix: extract candidate
symbols from the cloud's gap summary, grep the repo for their
definitions (function/const/let/def/class/struct/enum/trait/fn).
If every named symbol resolves, drop the finding; if some do,
demote to info with the resolution in evidence.
2. Cloud flagged runtime metrics like "58 cloud calls, 306s
end-to-end" as unbacked claims. These are empirical outputs
from running the test, not things a static diff can prove.
Fix: claim_parser now has an `empirical` strength class
matching iteration counts, cloud-call counts, duration metrics,
attempt counts, tier-count phrases. Inference drops empirical
claims from its cloud prompt (verifiable[] subset only) and
claim-index mapping uses verifiable[] so cloud responses still
line up.
Added `claims_empirical` to audit metrics so the verdict is
introspectable: how many claims WERE runtime-only vs how many
are diff-verifiable?
Verified: unit tests confirm empirical classification on 5
sample commit messages; symbol resolver found both false-positive
symbols (tailJsonl + stubFinding) and correctly skipped a known-
fake symbol.
lakehouse/auditor 2 blocking issues: unimplemented!() macro call in tests/real-world/hard_task_escalation.ts
Two changes that fell out of running the auto-loop for real on PR #8:
1. The systemd auditor blocked PR #8 on 'unimplemented!()' / 'todo!()'
in tests/real-world/hard_task_escalation.ts — but those strings are
the rubric itself, not macro calls. Added isInsideQuotedString()
detection in static.ts: BLOCK_PATTERNS now skip matches that fall
inside double-quoted / single-quoted / backtick string literals on
the added line. WARN/INFO patterns still run — a TODO comment in
a string is still a valid signal.
2. Verdicts were being persisted to disk but never fed back as
learning signal. Added appendAuditLessons() — every block/warn
finding writes a JSONL row to data/_kb/audit_lessons.jsonl with a
path-agnostic signature (strips file paths, line numbers, commit
hashes) so the SAME class of finding on DIFFERENT files dedups to
one signature.
kb_query now tails audit_lessons.jsonl and emits recurrence
findings: 2 distinct PRs hit a signature = info, 3-4 = warn, 5+ =
block. Severity ramps on distinct-PR count, not total rows, so a
single unfixed PR being re-audited doesn't inflate its own
recurrence score.
Fires on post-verdict fire-and-forget (can't break the audit if
disk write fails). The learning loop is now closed: each audit
contributes to the KB that guides the next audit.
Tested: unit tests for normalizedSignature confirmed path-agnostic
dedup; static.ts regression tests confirmed rubric strings no longer
trip BLOCK while real unquoted unimplemented!() still does.
lakehouse/auditor 2 blocking issues: unimplemented!() macro call in tests/real-world/hard_task_escalation.ts
Wires the cohesion-plan Phase C link: the scrum-master pipeline writes
per-file reviews to data/_kb/scrum_reviews.jsonl on accept; the
auditor now reads that same file and emits one kb_query finding per
scrum review whose `file` matches a path in the PR's diff.
Severity heuristic: attempt 1-3 → info, attempt 4+ → warn. Reaching
the cloud specialist (attempt 4+) means the ladder had to escalate,
which is meaningful signal reviewers should see. Tree-split fired is
also surfaced in the finding summary.
audit.ts now passes pr.files.map(f => f.path) into runKbCheck (the
old signature dropped it on the floor). Also adds auditor/audit_one.ts
— a dry-run CLI for auditing a single PR without posting to Gitea,
useful for verifying check behavior without spamming review comments.
Verified: after writing scrum_reviews for auditor/audit.ts and
mcp-server/observer.ts (both in PR #7), audit_one 7 surfaced both as
info findings with preview + accepted_model + tree_split flag. A
scrum review for playbook_memory.rs (NOT in PR #7) was correctly
filtered out.
auditor/checks/static.ts — grep-style scan of PR diffs, no AST,
no LLM. High-signal patterns only.
Severity grading:
- BLOCK — unimplemented!(), todo!(), panic!("not implemented"),
throw new Error("not implemented")
- WARN — TODO/FIXME/XXX/HACK in added lines;
new pub struct fields with <2 mentions in the diff
(added but nobody reads it — placeholder state)
- INFO — hardcoded "placeholder"/"dummy"/"foobar"/"changeme"/"xxx"
strings in added lines
Live-proven — the existential test J asked for:
vs PR #1 (scaffold): 0 findings (all scaffold fields cross-
reference within the diff)
vs commit 2a4b81b (Phase 5 WARN: every DocRef field (tool,
45 first slice — I version_seen, snippet_hash, source_url,
half-admitted placeholder): seen_at) added with 0 read-sites in
the diff
That's the auditor flagging my own "Phase 45 first slice" commit as
state-without-consumer, which is exactly what I half-admitted it
was. If PR #1 had required auditor-pass (branch protection), the
DocRef commit would have been blocked pre-merge. The auditor works
because it agreed with the honest read.
Next: dynamic hybrid test fixture (task #4) — the never-run multi-
layer pipeline test.
