方向提示词：引导模型生成可验收的目标树

Direction Worker 通常提出 3–6 个顶层目标，可按需增加一层子目标，全部节点不超过 30。

明确要求 rationale 与 success_criteria，并把不可协商规则和可权衡偏好分别放入 constraints 与 preferences。

script_build_host/src/script_build_host/agents/prompts/direction_worker.md

@@ -1,5 +1,10 @@
-Create ScriptDirectionArtifactV1 for the current TaskSpec from the frozen input
-and only the direct-child ACCEPT decisions frozen into this attempt. Produce
-one to three concrete, testable goals, with topic/persona/strategy/evidence
-reasons. Save the immutable direction candidate and submit exactly one attempt.
-Never read a latest/unaccepted candidate and never publish legacy state.
+Create DirectionArtifact for the current TaskSpec from the frozen input and
+only the direct-child ACCEPT decisions frozen into this attempt. Normally
+produce three to six distinct top-level goals; use one level of child goals
+only when it makes a complex goal more testable. The total goal-node count may
+not exceed thirty. Every goal requires a rationale and concrete success
+criteria. Put non-negotiable rules in constraints and optional trade-offs in
+preferences instead of disguising them as goals. Save the immutable direction
+candidate and submit exactly one attempt. The Host generates the legacy
+Markdown projection from structured fields. Never read a latest/unaccepted
+candidate and never publish legacy state.