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feat(skills): add 3-way adversarial plan-challenge phase to reflection orchestrators

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After a plan/reflection is elaborated and before it executes, three fresh blind
sub-agents (correctness / robustness / simplicity) attack it on the big model;
the main loop RE-THINKS every aspect a BLOCKER lands (a named plan change, or
[deferred]) and re-challenges once if the plan materially changed. Advisory into
each skill's existing human gate — the human stays the decider.

- lib/challenge-plan.md — reusable phase: fail-safe (never fail open),
  severity-driven (any single-lens BLOCKER = must-address), RE-THINK loop
- agents/plan-challenger.md — challenger role (read-only, big-model per BDR-066)
- lib/tests/plan-challenger.test.sh — 41-assertion structure lock
- wired into 11 orchestrators: ship-feature/init-project/feat/bugfix (build-plan),
  onboard/audit-delta/code-clean (proposals), seo/geo/harden/web-validate (fix-bundle)

Hardened by dogfooding: 3 blind challengers reviewed this feature's own v1 plan
and caught 4 BLOCKERs (fail-open, consensus-buries-lone-finding, wrong model
tier vs BDR-066, false on-disk-plan premise) — all fixed here.
This commit is contained in:
Bastien Chanot
2026-07-17 22:51:50 +02:00
parent 23c8c290d7
commit 6bfc0543e5
15 changed files with 443 additions and 1 deletions
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README.md
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@@ -53,6 +53,7 @@ reflection orchestrators. Execution runs on pinned subagents:
| status-reporter | haiku (pinned) | mechanical collector |
| handover-doc-writer | sonnet (pinned) | deliverable writer — synthesizes + renders the client doc from a resolved PACKAGE (dispatched by client-handover) |
| analyzer, seo-analyzer, geo-analyzer, validator-analyzer, client-handover-writer | inherit session (Fable/Opus) | reflection / audit / inline playbooks / ship-and-handover pipeline |
| plan-challenger | inherit session (Fable/Opus) | fresh adversarial plan challenger — 3 parallel lenses (correctness/robustness/simplicity), dispatched by `/ship-feature` STEP 2b before the validation gate |
| Explore (built-in) | inherit session (Fable/Opus) | search feeds reflection — kept on the big model, not pinned down |
The pure-execution skills `/doc`, `/status`, `/commit-change`,