Dragan Spiridonov 07326b9802 feat(arena): ADR-104 qe-arena Phase 1 — competitive test-strategy tournaments ...

aqe arena run: seeded tournaments where test strategies compete on REAL
fitness — built-in first-order operator mutants (string/comment/arrow-safe
enumeration) executed per strategy via node --test, real line coverage
from --experimental-test-coverage, and a deterministic suite-cost term.
Tournament emits a Wolfram-style pairwise competitive array; --evolve
hill-climbs the winner by seeded group flips with real re-evaluation.
Runs persist fail-soft to memory.db kv_store (namespace 'arena');
aqe arena list reads them back. Self-contained: no core changes, no new
dependencies; fixtures/arena-demo ships 4 test groups of varying kill
power over a branch-dense pricing module.

Reproducibility contract: same seed + fixture => byte-identical envelope
(verified E2E by diffing two runs), with informational.runtimesMs the
only excluded field. Honest finding during verification: the original
measured-runtime rank penalty was jitter-dominated at fixture scale and
flipped rankings between identical-seed runs — replaced with the
deterministic suite-size ratio (documented in ADR-104).

Phase 2 (documented): LLM-generated strategies frozen as artifacts,
winners distilled into qe-test-architect priors; MCP arena_run
registration (CLI and MCP share runArena() — parity by construction).

10 tests green (incl. real-engine reproducibility); tsc + eslint clean.

Part of #520 (improvement 7/7 — initiative complete).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

2026-06-10 10:48:37 +00:00

..

arena.test.ts

feat(arena): ADR-104 qe-arena Phase 1 — competitive test-strategy tournaments

2026-06-10 10:48:37 +00:00