Actually exercised every plugin shell end to end on a brand-new "SQL must always
include LIMIT" analyst persona:
- Claude Code shell: harvest (2 real crafted transcripts -> 2 tasks), full run
(stages a proposal), adopt (honors the no-op-when-nothing-accepted contract).
- Codex: install.sh places ~/.codex/prompts/sleep.md + ~/.agents/skills correctly.
- Copilot: MCP server initialize -> tools/list -> tools/call returns engine output.
Genuine improvement on the fresh persona, both backends: held-out TEST 0.00 -> 1.00
(Sonnet->Haiku and Codex), the optimizer learning the user's LIMIT house rule and
generalizing to unseen queries. Honest finding: the first split left too few train
tasks (no-op night) — re-balancing fixed it; motivates a small-train-pool warning.
Co-Authored-By: Claude Opus 4 <noreply@anthropic.com>
