feat(prompt): add GPT narrate-before-tools family residual - #1135
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TheGreatAxios merged 17 commits intoSep 21, 2026
Merged
TheGreatAxios merged 17 commits into
TheGreatAxios merged 17 commits into
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Claude-family leaf workers get one <task_guidance> XML block appended once at the tail of the system prompt via the ModelFamilyPolicy promptResidual seam. A prose residual did nothing; one XML block cut Sonnet tokens. Balanced tags, leaf-only, never applied to grok/gpt — and never a full-prompt XML renderer.
Rebuild the Claude XML residual end to end from Anthropic's prompting docs while keeping CL-7775's measured shape: rationale first, numbered approach, named output contract, one wrapper, leaf-only tail placement. Every line is positively framed and scope-explicit for Sonnet's literal instruction-following; per-line provenance in the PR body.
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The anthropic/claude-sonnet-4 fixture now resolves to the claude family, so the default column silently measured the task_guidance block. Probe openai/gpt-4.1 instead (default family until the CL-8310 gpt row lands) and assert the default column carries no family residual.
Primary and leaf prompts carry a 3-line narrate-before-tools residual when the active session resolves to the gpt family (codex, gpt-*); grok and claude prompts are untouched and the residual appears exactly once. Fixes CL-8310
openai/gpt-4.1 now resolves to the gpt family, so the default column measured the narrate-before-tools nudge. Probe an unrecognized provider instead — default family regardless of shipped rows — and assert the default column carries neither the claude block nor the gpt nudge.
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Summary:
gptfamily to detectModelFamily (codex + gpt-* providers/models).Verification:
bun run typecheckclean (tsc --noEmit, exit 0).bun install— without local node_modules the parent checkout's untyped semver copy breaks typecheck on vendor/intx-types (environment artifact, unrelated to this change).Overlap: CL-8297 (parallel, unmerged lane) adds the promptResidual hook this branch consumes; this branch carries a minimal compatible hook locally so it is self-contained and green.
Fixes CL-8310