Add validation pipeline, sandbox, and evolution DB layer (Phase 7)
Three-stage fail-fast validator for LLM-generated bot candidates:
- syntax.go: language-aware parse (go/parser for Go; py_compile, rustfmt,
tsc, javac, php -l for others; brace-balance fallback)
- schema.go: regex detection of /health + /turn endpoints and "moves" field
- sandbox.go: nsjail-isolated smoke test — builds bot, polls /health, sends
5 signed /turn requests, verifies JSON moves responses
- validator.go: orchestrates stages with fail-fast short-circuit
DB layer:
- programs table + CRUD (create, get, list, updateFitness, setPromoted)
- validation_log table with RecordValidation, IslandPassRates,
IslandValidationStats for per-island pass-rate tracking
- seed.go: 6 generation-0 bots across alpha/beta/gamma/delta islands
MAP-Elites grid (mapelites/grid.go): 2-D behavior grid on aggression×economy
axes; TryPlace keeps the fittest occupant per niche.
acb-evolver CLI gains two new subcommands:
validate <file> -lang <lang> [-island <island>] [-nsjail] [-nolog]
validation-stats (tabular per-island pass-rate breakdown)
cmd/acb-api/db.go: add programs table to API schema so the API can query
promoted evolved bots.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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