7e6431e4fd
The Rust side has Langfuse tracing already (gateway/v1/langfuse_trace.rs); this commit lands Go-side parity so the multi-coord stress harness can emit traces visible at http://localhost:3001. internal/langfuse/client.go: - Minimal Trace + Span + Flush API mirroring what the Rust emitter uses. Auth: Basic over public_key:secret_key. - Best-effort posture: errors are slog.Warn'd, never block calling paths. Same fail-open as observerd's persistor (ADR-005 Decision 5.1) — observability is a witness, not a gate. - Events buffered until 50, then auto-flushed; explicit Flush() at process exit. - Each Trace/Span returns its id so callers can build hierarchies. multi_coord_stress driver wiring: - New --langfuse-env flag (default /etc/lakehouse/langfuse.env). Empty / missing / unparseable file → skip tracing with a logged warning; run still proceeds. - Phase 1c (inbox burst) now emits one parent trace + 4 spans per inbox event: 1. observerd.inbox.record (post to /v1/observer/inbox) 2. llm.parse_demand (qwen2.5 → structured fields) 3. matrix.search (parsed query → top-K) 4. llm.judge_top1 (rate top-1 vs original body) Each span carries input/output JSON + start/end times so the Langfuse UI shows a full waterfall per event. Run #009 result: Trace landed: "multi_coord_stress phase 1c inbox burst" Observations attached: 24 (= 6 events × 4 spans) Tags: stress, phase-1c, inbox Browseable at http://localhost:3001 by tag query. Other harness metrics: diversity 0.016, determinism 1.000, verbatim handover 4/4, paraphrase handover 4/4 — all unchanged by the tracing addition (best-effort post in parallel). Phase 1c is the proof-of-concept; future commits can wrap other phases (baseline / merge / handover / split) in traces too. Once that's done, the entire stress run becomes scrubbable in Langfuse without grepping the events JSON. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
reports/reality-tests — does the 5-loop substrate actually work?
Reality tests measure product outcomes, not substrate health. The 21 smokes prove the system runs; the proof harness proves the system makes the claims it claims; reality tests answer: does the small-model pipeline + matrix indexer + playbook give measurably better results than raw cosine?
This is the gate from project_small_model_pipeline_vision.md: "the playbook + matrix indexer must give the results we're looking for." Single load-bearing criterion. Throughput, scaling, code elegance are secondary.
What lives here
Each reality test is a numbered run that produces:
<test>_<NNN>.json— raw structured evidence (per-query data, summary metrics)<test>_<NNN>.md— human-readable report with headline metrics, per-query table, honesty caveats, next moves
Runs are append-only. Earlier runs stay in tree as historical baseline.
Test catalog
playbook_lift_<NNN> — does the playbook actually lift the right answer?
Driver: scripts/playbook_lift.sh → bin/playbook_lift
Queries: tests/reality/playbook_lift_queries.txt
Pipeline: cold pass → LLM judge → playbook record → warm pass → measure ranking shift.
The headline question: when the LLM judge finds a better answer than cosine top-1, can the playbook boost it to top-1 on the next run? If yes, the learning loop closes; if no, the matrix layer + playbook is infrastructure for a thesis that doesn't pay rent.
See the run reports for honesty caveats — chiefly that the LLM judge IS the ground-truth proxy.
Running a reality test
# Defaults: judge resolved from lakehouse.toml [models].local_judge,
# workers limit 5000, run id 001
./scripts/playbook_lift.sh
# Re-run with a different judge to check inter-judge agreement
# (env JUDGE_MODEL overrides the config tier)
JUDGE_MODEL=qwen3:latest RUN_ID=002 ./scripts/playbook_lift.sh
# Smaller scale for fast iteration
WORKERS_LIMIT=1000 K=5 RUN_ID=dev ./scripts/playbook_lift.sh
Judge resolution priority (Phase 3, 2026-04-29):
-judgeflag on the Go driver (explicit override)JUDGE_MODELenv var (operator override)lakehouse.toml [models].local_judge(default)- Hardcoded
qwen3.5:latest(last-resort fallback if config missing)
This means model bumps land in lakehouse.toml, not in this script or
the Go driver. Bumping local_judge to a stronger local model (e.g.
when qwen4 ships) takes one line.
Requires: Ollama on :11434 with nomic-embed-text + the resolved judge
model loaded. Skips cleanly (exit 0) if Ollama is absent.
Interpreting results
Three thresholds matter on the playbook_lift tests:
| Lift rate (lifts / discoveries) | Verdict |
|---|---|
| ≥ 50% | Loop closes — playbook is doing real work, move to paraphrase queries |
| 20-50% | Lift exists but inconsistent — investigate boost math (score × 0.5) or judge variance |
| < 20% | Loop is not pulling its weight — diagnose before adding more components |
A separate concern: discovery rate (cold judge-best ≠ cold top-1). If discovery is itself rare (< 30% of queries), cosine is already close to optimal on this query distribution and the matrix+playbook layer has little headroom. That's not necessarily a bug — but it means the value gate has to come from somewhere else (multi-corpus retrieval, domain-specific tags, drift signal).
What this is not
- Not a benchmark. No comparison against external systems; only internal cold-vs-warm.
- Not a regression gate. Each run is a snapshot. Scores will drift with corpus changes, judge updates, and playbook math tuning. Don't wire
just verifyto demand a minimum lift. - Not human-validated. The LLM judge is the ground truth proxy. Sample 5-10 verdicts manually per run to sanity-check the judge isn't pathological.