refactor(evaluation-system): compact harness prompts, A/B verified - #38
refactor(evaluation-system): compact harness prompts, A/B verified#38cmschuetz wants to merge 1 commit into
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| @@ -40,20 +40,20 @@ ${item.validations.map(v => `- ${v}`).join('\n')} | |||
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| Commit your work on ${item.branch} with a Conventional-Commits message (\`<type>(${cfg.slug}): <description>\` — scope is the run slug, no \`${item.id}:\` title prefix; reference ${item.id} and the feedback fix in the body). If validations pass, commit and return status "implemented" with validations_green true. If you hit a blocker you cannot resolve (contradictory addendum, validation failure you cannot fix), commit what is safe, return status "blocked" with the blocker described — do NOT loop indefinitely.` | |||
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The addendum / fix-agent branch of implementPrompt still carries the redundancies R3 removed from the sibling non-addendum branch: the verbose read-list item and the doubled "commit and return" in this closing paragraph. The compaction is asymmetric — finish it here too (meaning-preserving, same as R3) or the two branches drift. (D4 self-flagged; correctness-safe.)
Remove four genuine, meaning-preserving redundancies from the harness stage prompts, each verified via the D1-D3 eval suite's A/B mode with no correctness regression: - planner (stages/plan.ts, steps 3-5): define "meaningful diff" once; state the cross-repo base rule + ordering-only consequence once (drop step 4's restatement) - reviewer (review-loop.ts): collapse the AC-checklist paragraph's doubled equal-weight clause - soundness lens b (review-loop.ts PLAN_LENSES.b): define "meaningful diff" once instead of repeating the exclusion phrase twice - implementer (stages/implement.ts): fold the filler lead-in into the header and drop the doubled "commit" in the closing paragraph The eval cases (planner/reviewer/implementer) now carry baseline->candidate variants so `bun run eval --suite src/eval/suites/harness --ab` reproduces the verification (exit 0: correctness held at parity across all cases). End-to-end envelope cost/latency is below the harness's agentic execution-noise floor, so the attributable win is the deterministic prompt-text reduction (-302 chars); the eval's decisive role is certifying zero correctness regression. A written PR-#33 verdict and full A/B numbers live in the run dir's optimizations-report.md. Regenerates plugins/strapped/workflows/strapped-run.js; plugin 0.8.0 -> 0.8.1 (patch: prompt compaction, no behavior change). Implements D4 of the evaluation-system run.
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Closing unmerged. The four edits total ~302 chars (≈76 tokens), spread across three different prompts — no single invocation saves more than ~40. Against a measured 86k–180k input tokens per harness invocation that's a ~0.02% reduction, and the observed cost deltas swung ±$0.05 with sign flips between runs — roughly 600× larger than the effect. There is no cost win to claim. The correctness evidence was N=1 per arm at 25% tolerance: a smoke test, not verification of parity. One edit ( The genuinely useful output of this deliverable was the negative result: the D1–D3 eval suite cannot measure cost/latency effects of prompt edits, because agentic variance (2–17 turns, 86k→180k input context on identical prompts) swamps prompt-length effects by 3–4 orders of magnitude. That reframes the suite as a correctness/regression harness. That finding, and the PR #33 verdict, are preserved in the run state's |
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Deliver the empirical payoff: use the eval suite (D1–D3) to find and remove at
least three redundancies in the harness prompts, each backed by an A/B eval
showing no meaningful correctness regression (within tolerance) and a cost or
latency win, and produce a documented, evidence-based verdict on PR #33. The
prompt edits live in
src/workflows/strapped-run/**, so the generatedplugins/strapped/workflows/strapped-run.jsis rebuilt and the plugin versionis bumped via the version tool (never by hand) — unlike D1–D3, which are not
plugin deployables. The human remains the final judge on PR #33.
Summary
Compacts redundant prompt prose in
review-loop.tsand thestages/files,adds A/B variant cases capturing each baseline→candidate compaction so the win
is reproducible by
bun run eval --ab, regeneratesstrapped-run.jsviabun run build, and bumps the plugin version throughbun tools/version.ts bump. The ≥3 removed redundancies and the PR-#33 verdict, with theirΔcorrectness / Δcost / Δlatency numbers, are recorded in the run-state
optimizations-report.md(kept out of the repo diff).Acceptance criteria
src/workflows/strapped-run/**, each with a recorded A/B eval (Δcorrectness within tolerance, cost or latency improved).plugins/strapped/workflows/strapped-run.jsregenerated and in sync (build-syncgreen).bun tools/version.ts bumpandbun run version:checkpasses.optimizations-report.md.bun run typecheck && bun run lint && bun testand a livebun run evalover the affected cases are green (no regression past tolerance).Stack
All deliverables target the
strappedrepo (linear stack, each PR based on its parent's branch).strapped/evaluation-system/D1-eval-enginestrapped/evaluation-system/D2-eval-frameworkstrapped/evaluation-system/D3-harness-eval-suitestrapped/evaluation-system/D4-verified-optimizationsDepends on #37