refactor: split InstructionMessage into multiple system message blocks#707
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refactor: split InstructionMessage into multiple system message blocks#707
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Split the single concatenated instruction string into 2-3 separate SystemModelMessages for improved prompt clarity and per-block cache control. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
…tents Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
createInstructionMessageinto 2-3 separateTextParts (preamble+meta, expert instruction, optional skill rules) instead of one concatenated string with---separatorsmessageToCoreMessageto returnModelMessage[], mapping each instructionTextPartto a separateSystemModelMessagecacheControlonly to the last system block for optimal prefix cachinggenerating-tool-call.tsto useflatMapfor the new array return typeinstructionContentsToCoreContenthelperTest plan
bun run typecheck— 24/24 packages passbun run test— message tests 18/18 pass (pre-existing failures in coordinator/setup-experts unrelated)bun run build— 24/24 packages passbun run validate:changeset🤖 Generated with Claude Code