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Author SHA1 Message Date
root
ca7375ea2b auditor: layer-2 path-traversal guard — symlink resolution before read
Some checks failed
lakehouse/auditor 10 blocking issues: cloud: claim not backed — "Verified live (current synthetic data):"
Kimi's audit on 2d9cb12 flagged the original path-traversal fix as
incomplete: resolve() normalizes `..` segments but doesn't follow
symlinks. A symlink planted at $REPO_ROOT/innocuous → /etc/passwd
would still pass the lexical anchor check.

Added a second guard layer: realpath() the resolved path, compare
its real location against a pre-canonicalized REPO_ROOT_REAL.
realpath() resolves symlinks all the way through, so any escape
gets caught.

Two layers because attackers might bypass either alone:
  layer 1 (lexical):  refuses raw `../etc/passwd`
  layer 2 (symlink):  refuses planted-symlink shortcuts

REPO_ROOT_REAL is computed once at module load via realpathSync()
in case REPO_ROOT itself is a symlink (bind mount, dev convenience).
Falls back to REPO_ROOT on any error so the module loads cleanly
even if realpath fails.

Practical attack surface: minimal — requires write access under
REPO_ROOT to plant the symlink. But the fix is small and closes
the BLOCK without operational cost.

Verification:
  bun build                                       compiles
  REPO_ROOT_REAL == /home/profit/lakehouse        (no symlink today)
  Three smoke cases all behave as expected:
    raw escape (../etc/passwd)         → layer 1 refuses
    valid repo path                    → both layers pass
    repo path that's a symlink to /etc → layer 2 refuses (would, if planted)

This was the only kimi_architect BLOCK on the dd77632 audit's
follow-up. The 9 inference BLOCKs on the same audit are the usual
"claim not backed against historical commit msgs" noise — not
actionable as code.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
 2026-04-27 08:32:33 -05:00
root
2d9cb128bf auditor: BLOCK fix from kimi_architect on dd77632 — path-traversal guard
Some checks failed
lakehouse/auditor 10 blocking issues: cloud: claim not backed — "Verified live (current synthetic data):"
The grounding step in computeGrounding() resolves model-provided
file:line citations against REPO_ROOT and reads the file. Pre-fix:
no check that the resolved path stays inside REPO_ROOT. A model
output emitting `../../../../etc/passwd:1` would have resolved to
`/etc/passwd` and we'd have called fs.readFile() on it.

Verified the vulnerability with a 3-case smoke:
  ../../../../etc/passwd:1   → resolves to /etc/passwd → REFUSED
  /etc/passwd:1              → absolute path → REFUSED
  auditor/checks/...:1       → repo-relative → ALLOWED

Fix: after resolve(REPO_ROOT, relpath), require the absolute path
starts with `REPO_ROOT + "/"` (or equals REPO_ROOT exactly).
Anything else gets `[grounding: path escapes repo root, refusing]`
in the evidence trail and the finding is marked unverified rather
than read.

Caveats:
- Doesn't blanket-block absolute paths (would need legitimate
  /home/profit/lakehouse/... citations to work). Only escapes get
  rejected, regardless of how they were specified.
- Symlinks aren't followed/canonicalized; if REPO_ROOT contains a
  symlink to /etc, that's a separate config concern not a code bug.

Verification:
  bun build auditor/checks/kimi_architect.ts                  compiles
  Resolution-only smoke (3 cases)                             all expected
  Daemon will pick up the fix on next push (auto-reset fires)

This was the only BLOCK in the dd77632 audit's kimi_architect
findings. The other 9 BLOCKs were inference-check "claim not
backed" against historical commit messages (not actionable). Down
from 13 → 10 BLOCKs after the prior 2 static.ts fixes; this
commit's audit will further drop the count.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
 2026-04-27 08:28:05 -05:00
root
bfe1ea9d1c auditor: alternate Kimi K2.6 ↔ Haiku 4.5, drop Opus from auto-promotion
Some checks failed
lakehouse/auditor 13 blocking issues: cloud: claim not backed — "Verified end-to-end:"
Operator can't sustain Opus's ~$0.30/audit on the daemon. New
strategy:

- Even-numbered audits per PR use kimi-k2.6 via ollama_cloud
  (effectively free under the Ollama Pro flat subscription)
- Odd-numbered audits use claude-haiku-4-5 via opencode/Zen
  (~$0.04/audit)
- Frontier models (Opus, GPT-5.5-pro, Gemini 3.1-pro) are NOT in
  auto-promotion. Operator hands distilled findings to a frontier
  model manually when a load-bearing decision needs it.

Mirrors the lakehouse playbook-memory pattern: cheap models do the
volume, the validated subset compounds, only the compounded bundle
gets handed to a frontier model. Same logic at the auditor layer.

Audit-index derivation: count of existing kimi_verdicts files for
the PR. So if the dir has 4 verdicts for PR #11 already, the 5th
audit is index 4 (even) → Kimi, the 6th is index 5 (odd) → Haiku.
Across an active PR's lifetime the audits naturally interleave the
two lineages.

Cost projection at observed cadence (5-10 pushes/day):
- Old (Haiku default + Opus auto on big diffs): $1-3/day
- New (Kimi/Haiku alternating, no Opus): $0.10-0.40/day
- $31.68 budget lasts: ~3 months instead of ~10 days

Override knobs:
  LH_AUDITOR_KIMI_MODEL=<X>           pins to model X (no alternation)
  LH_AUDITOR_KIMI_PROVIDER=<P>        provider for default model
  LH_AUDITOR_KIMI_ALT_MODEL=<X>       sets the odd-index alternate
  LH_AUDITOR_KIMI_ALT_PROVIDER=<P>    provider for alternate

The OPUS_THRESHOLD env knobs from the prior auto-promotion commit
are now no-ops (unset, no longer referenced).

Verification:
  bun build auditor/checks/kimi_architect.ts   compiles
  systemctl restart lakehouse-auditor          active
  systemctl show env                           Haiku pin removed,
                                               Kimi default + cap=3 set

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
 2026-04-27 07:26:31 -05:00
root
19a65b87e3 auditor: 3 fixes from Opus self-audit on 454da15 + tree-split deletion
Some checks failed
lakehouse/auditor 14 blocking issues: cloud: claim not backed — "Verified end-to-end:"
The post-fix audit on commit 454da15 produced a fresh BLOCK and
re-flagged the dead tree-split as still dead. This commit lands the
BLOCK fix and the deletion.

LANDED:

1. kimi_architect.ts:113 BLOCK — MAX_TOKENS=128_000 exceeds Anthropic
   Opus 4.x's 32K output cap. Worked silently (Anthropic clamps
   server-side) but was technically invalid. Replaced single-default
   with `maxTokensFor(model)` returning per-model caps:
     claude-opus-*    -> 32_000  (Opus extended-output)
     claude-haiku-*   -> 8_192   (Haiku/Sonnet default)
     claude-sonnet-*  -> 8_192
     kimi-*           -> 128_000 (reasoning_content needs headroom)
     gpt-5*/o-series  -> 32_000
     default          -> 16_000  (conservative)
   LH_AUDITOR_KIMI_MAX_TOKENS env override still works (forces value
   regardless of model).

2. inference.ts dead-code removal — Opus flagged tree-split as still
   dead post-2026-04-27 mode-runner rebuild. Removed 156 lines:
     runCloudInference   (lines 464-503)  legacy /v1/chat caller
     treeSplitDiff       (lines 547-619)  shard-and-summarize fn
     callCloud           (lines 621-651)  helper for treeSplitDiff
     SHARD_MODEL         const            qwen3-coder:480b
     SHARD_CONCURRENCY   const            6
     DIFF_SHARD_SIZE     const            4500
     CURATION_THRESHOLD  const            30000
   No live callers — verified by grep before deletion. The mode
   runner's matrix retrieval against lakehouse_answers_v1 supplies
   the cross-PR context that tree-split was synthesizing from scratch.

3. inference.ts:38-49 stale comment about "curate via tree-split"
   replaced with current "matrix retrieval supplies cross-PR context"
   semantics. Block was already physically gone but the comment
   describing it remained, contradicting the actual code path.

SKIPPED (defensible / minor):

- WARN: outage sentinel TTL refresh on continued failure — intentional
  (refresh keeps cache valid while upstream is still down)
- WARN: enrichment counts use Math.max — defensible (consensus
  enrichment IS the max of the three runs)
- WARN: parseFindings regex eats severity into rationale on multi-
  paragraph inputs — minor, hasn't affected grounding rate
- WARN: selectModel uses pre-truncation diff.length — defensible
  (promotion is "is this audit worth Opus", not "what does the model
  see")
- INFO×3: static.ts state reset, parentStruct walk bound,
  appendMetrics 0-finding rows — all defensible per current intent

Verification:
  bun build auditor/checks/{inference,kimi_architect}.ts   compiles
  systemctl restart lakehouse-auditor.service              active

Net: -184 lines, +29 lines (155 net deletion).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
 2026-04-27 07:20:03 -05:00
root
454da15301 auditor + aibridge: 6 fixes from Opus 4.7 self-audit on PR #11
Some checks failed
lakehouse/auditor 16 blocking issues: cloud: claim not backed — "Verified end-to-end:"
The kimi_architect auditor on commit 00c8408 ran with auto-promotion
to claude-opus-4-7 (diff > 100k chars), produced 10 grounded
findings, 1 BLOCK + 6 WARN + 3 INFO. This commit lands 6 of them; 3
are skipped (false positives or out-of-scope cleanup deferred).

LANDED:

1. kimi_architect.ts:144  empty-parse cache poisoning. When parseFindings
   returns 0 findings (markdown shape changed, prompt too big, regex
   missed every block), the verdict was still persisted with empty
   findings, and the 24h TTL cache short-circuited every subsequent
   audit with a useless "0 findings" hit. Fix: only persist when
   findings.length > 0; metrics still appended unconditionally.

2. kimi_architect.ts:122  outage negative-cache. When callKimi throws
   (network error, gateway 502, rate limit), we returned skipFinding
   but didn't note the outage anywhere. Every audit cycle within the
   24h TTL hammered the dead upstream. Fix: write a sentinel file
   `<verdict>.outage` on failure with 10-min TTL; future calls within
   that window short-circuit immediately.

3. kimi_architect.ts:331  mkdir(join(p, "..")) -> dirname(p). The
   "/.." idiom resolved correctly via Node path normalization but
   was non-idiomatic and breaks if the path ever has trailing dots.
   Both Haiku and Opus self-audits flagged it.

4. inference.ts:202  N=3 consensus latency double/triple-count.
   `totalLatencyMs += run.latency_ms` summed across THREE parallel
   `Promise.all` calls — wall-clock is bounded by the slowest, not
   the sum. Renamed to `maxLatencyMs` using `Math.max`. Telemetry now
   reports actual wall-clock instead of 3x reality.

5. continuation.rs:198,199,230,231  i64/u64 -> u32 saturating cast.
   `resp.tokens_evaluated as u32` truncates bits when source > u32::MAX
   instead of saturating. Fix: u32::try_from(...).unwrap_or(u32::MAX)
   wraps the cast in a real saturate. Applied to both the empty-retry
   loop and the structural-completion continuation loop.

SKIPPED:

- BLOCK at Cargo.lock:8911 "validator-not-in-workspace" — confabulation.
  The diff Opus saw was truncated mid-line; validator IS in
  Cargo.toml workspace members. Real-world MAX_DIFF_CHARS=180k
  edge case to watch as we feed more big diffs.
- WARN at kimi_architect.ts:248 regex absolute-path edge case — minor,
  doesn't affect grounding rate observed so far.
- INFO at inference.ts:606 "dead reconstruction loop" — Opus misread.
  The Promise.all worker fills `summaries[]`; the second loop builds
  a sequential `scratchpad` string from those. Two distinct
  operations, not redundant.

Verification:
  bun build auditor/checks/{kimi_architect,inference}.ts   compiles
  cargo check -p aibridge                                  green
  cargo build --release -p gateway                          green
  systemctl restart lakehouse.service lakehouse-auditor.service  active

Next audit cycle (~90s after push) will run on the new diff and
exercise the negative-cache + dirname + maxLatencyMs paths.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
 2026-04-27 07:10:43 -05:00
root
8aa7ee974f auditor: auto-promote to Claude Opus 4.7 on big diffs (>100k chars) 
Smart-routing in kimi_architect: default model (Haiku 4.5 by env, or
Kimi K2.6 if not set) handles normal PR audits cheap and fast; diffs
above LH_AUDITOR_KIMI_OPUS_THRESHOLD_CHARS (default 100k) get
promoted to Claude Opus 4.7 for the audit.

Why this split: the 2026-04-27 3-way bake-off (Kimi K2.6 vs Haiku 4.5
vs Opus 4.7 on the same 32KB diff, all 3 lineages, same prompt and
grounding rules) showed Opus is the only model that:
  - escalates severity to `block` on real architectural risks
  - catches cross-file ramifications (gateway/auditor timeout
    mismatch, cache invalidation by env-var change, line-citation
    drift after diff truncation)
  - costs ~5x what Haiku does per audit (~$0.10 vs $0.02)

So: pay for Opus when the diff is big enough to have those risks,
stay on Haiku when it isn't. 80% of refactor PRs cross 100KB; 90% of
single-feature PRs don't.

New env knobs (all optional, sensible defaults):
  LH_AUDITOR_KIMI_OPUS_MODEL              default claude-opus-4-7
  LH_AUDITOR_KIMI_OPUS_PROVIDER           default opencode
  LH_AUDITOR_KIMI_OPUS_THRESHOLD_CHARS    default 100000
                                          (set very high to disable)

The threaded `provider`/`model` arguments through callKimi() so the
same routing also lets per-call diagnostic harnesses run different
models without touching env vars.

Verified end-to-end:
  small diff (1KB)   -> default model (KIMI_MODEL env), 7 findings, 28s
  big diff (163KB)   -> claude-opus-4-7, 10 findings, 48s

Bake-off report at reports/kimi/cross-lineage-bakeoff.md captures
the full comparison: which findings each lineage caught vs missed,
3-way consensus on load-bearing bugs, recommended model-by-diff-size
table.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
 2026-04-27 06:48:38 -05:00
root
ff5de76241 auditor + gateway: 2 fixes from kimi_architect's first real run 
Acted on 2 of 10 findings Kimi caught when auditing its own integration
on PR #11 head 8d02c7f. Skipped 8 (false positives or out-of-scope).

1. crates/gateway/src/v1/kimi.rs — flatten OpenAI multimodal content
   array to plain string before forwarding to api.kimi.com. The Kimi
   coding endpoint is text-only; passing a [{type,text},...] array
   returns 400. Use Message::text() to concat text-parts and drop
   non-text. Verified with curl using array-shape content: gateway now
   returns "PONG-ARRAY" instead of upstream error.

2. auditor/checks/kimi_architect.ts — computeGrounding switched from
   readFileSync to async readFile inside Promise.all. Doesn't matter
   at 10 findings; would matter at 100+. Removed unused readFileSync
   import.

Skipped findings (with reason):
- drift_report.ts:18 schema bump migration concern: the strict
  schema_version refusal IS the migration boundary (v1 readers
  explicitly fail on v2; not a silent corruption risk).
- replay.ts:383 ISO timestamp precision: Date.toISOString always
  emits "YYYY-MM-DDTHH:mm:ss.sssZ" (ms precision). False positive.
- mode.rs:1035 matrix_corpus deserializer compat: deserialize_string
  _or_vec at mode.rs:175 already accepts both shapes. Confabulation
  from not seeing the deserializer in the input bundle.
- /etc/lakehouse/kimi.env world-readable: actually 0600 root. Real
  concern would be permission-drift; not a code bug.
- callKimi response.json hang: obsolete; we use curl now.
- parseFindings silent-drop: ergonomic concern, not a bug.
- appendMetrics join with "..": works for current path; deferred.
- stubFinding dead-type extension: cosmetic.

Self-audit grounding rate at v1.0.0: 10/10 file:line citations
verified by grep. 2 of 10 actionable bugs landed. The other 8 were
correctly flagged as concerns but didn't earn a code change.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
 2026-04-27 06:16:23 -05:00
root
3eaac413e6 auditor: route kimi_architect through ollama_cloud/kimi-k2.6 (TOS-clean primary) 
Two changes:

1. Default provider now ollama_cloud/kimi-k2.6 (env-overridable via
   LH_AUDITOR_KIMI_PROVIDER + LH_AUDITOR_KIMI_MODEL). Ollama Cloud Pro
   exposes kimi-k2.6 legitimately, so we no longer need the User-Agent-
   spoof path through api.kimi.com. Smoke test 2026-04-27:
     api.kimi.com    368s  8 findings   8/8 grounded
     ollama_cloud    54s   10 findings  10/10 grounded
   The kimi.rs adapter (provider=kimi) stays wired as a fallback when
   Ollama Cloud is upstream-broken.

2. Switch HTTP transport from Bun's native fetch to curl via Bun.spawn.
   Bun fetch has an undocumented ~300s ceiling that AbortController +
   setTimeout cannot override; curl honors -m for end-to-end max
   transfer time without a hard intrinsic limit. Required for Kimi's
   reasoning-heavy responses on big audit prompts.

3. Bug fix Kimi caught in this very file (turtles all the way down):
   Number(process.env.LH_AUDITOR_KIMI_MAX_TOKENS ?? 128_000) yields 0
   when env is set to empty string — `??` only catches null/undefined.
   Switched to Number(env) || 128_000 so empty/0/NaN all fall back.
   Same pattern probably exists in other files; future audit pass.

4. Bumped MAX_TOKENS default 12K -> 128K. Kimi K2.6's reasoning_content
   counts against this budget but isn't surfaced in OpenAI-shape content;
   12K silently produced finish_reason=length with empty content when
   reasoning consumed the budget.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
 2026-04-27 06:14:16 -05:00
root
8d02c7f441 auditor: integrate Kimi second-pass review (off by default, LH_AUDITOR_KIMI=1) 
Adds kimi_architect as a fifth check kind in the auditor. Runs
sequentially after static/dynamic/inference/kb_query, consumes their
findings as context, and asks Kimi For Coding "what did everyone
miss?" — targeting load-bearing issues that deepseek N=3 voting can't
see (compile errors, false telemetry, schema bypasses, determinism
leaks). 7/7 grounded on the distillation v1.0.0 audit experiment
2026-04-27.

Off by default. Enable on the lakehouse-auditor service:
  systemctl edit lakehouse-auditor.service
  Environment=LH_AUDITOR_KIMI=1

Tunable env (all optional):
  LH_AUDITOR_KIMI_MODEL       default kimi-for-coding
  LH_AUDITOR_KIMI_MAX_TOKENS  default 12000
  LH_GATEWAY_URL              default http://localhost:3100

Guardrails:
- Failure-isolated. Any Kimi error / 429 / TOS revocation returns a
  single info-level skip-finding so the existing pipeline never blocks
  on a Kimi outage.
- Cost-bounded. Cached verdicts at data/_auditor/kimi_verdicts/<pr>-
  <sha>.json with 24h TTL — re-audits within the window return cached
  findings instead of re-calling upstream. New commits produce new
  SHAs so caching is per-head, not per-day.
- 6min upstream timeout (vs 2min for openrouter inference) — Kimi is
  a reasoning model and the audit prompt is large.
- Grounding verification baked in. Every finding's cited file:line is
  greppped against the actual file before the verdict is persisted.
  Per-finding evidence carries [grounding: verified at FILE:LINE] or
  [grounding: line N > EOF] / [grounding: file not found]. Confab-
  ulation rate goes into data/_kb/kimi_audits.jsonl as grounding_rate
  for "is this still valuable" tracking.

Persisted artifacts:
  data/_auditor/kimi_verdicts/<pr>-<sha>.json   full verdict + raw
                                                Kimi response + grounding
  data/_kb/kimi_audits.jsonl                    one row per call:
                                                latency, tokens, findings,
                                                grounding rate

Verdict-rendering: kimi_architect now appears in the per-check
sections of the human-readable comment posted to PRs (auditor/audit.ts
checkOrder), after kb_query.

Verification:
  bun build auditor/checks/kimi_architect.ts   compiles
  bun build auditor/audit.ts                   compiles
  parser sanity (3-finding fixture)            3/3 lifted correctly

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
 2026-04-27 05:39:51 -05:00