Specialist agents had ZERO shared instruction layer — each inlined its own knowledge, none
referenced the rails/layering/verification rules, so the same mistakes recurred. Restructured
into a DRY shape grounded in the bugs this session surfaced:
NEW specialist-preamble.md — the shared core every specialist loads first. Six commandments,
each earned by a real violation: (1) verify-don't-infer incl. docs/memory drift (the rust-source
false claims), (2) code-layering (formula vs orchestration vs presentation vs content vs type),
(3) prove-it by output type (cargo test / headless loop / golden-repin / render-proof), (4) stay
in scope (Game 1, no gold-plating disabled systems), (5) objective state = pointer+protocol not
embedded, (6) safety/workflow (build-output, atomic commits, worktree-fork→file-extraction).
agents-task-map.md rewritten as the orchestration PLAYBOOK (not just a lookup): dispatch-vs-inline,
parallel-by-default, the mandatory verify gate per output type, the worktree-fork integration rule,
"specialists return data not prose". Fixed the phantom mc-magic row (Game 2/3, no crate).
All 13 agents converted to thin shared-core pointer + domain delta (fault line + domain docs +
how-to-verify), each fault line drawn from a real drift risk for that specialist. Router + README +
CLAUDE.md agents section updated.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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