阶段策略：用 Goal 不变量替代写死的七步教程

Phase 2 Host 策略只保留单 Portfolio、Direction 固定引用、Goal 集、adoption closure、scope/write-scope 和阶段边界等强约束。

删除内部 E2E、固定段落数量和逐步操作脚本，允许 Planner 按内容需要动态安排创作任务；Root 增加稳定的 direction-goals-satisfied 验收项。

script_build_host/src/script_build_host/agents/prompts/script_planner.md

@@ -25,6 +25,9 @@ in `input_decision_refs` and use `script-build://...` URIs for `scope_ref` and
 `script-direction/v1`; structure, paragraph, element-set, compare, compose, and
 candidate-portfolio produce their correspondingly named v1 schema shown by the
 tool. Include all empty arrays and nullable fields required by the schema.
+In Phase 1 use an empty `goal_ids` array. In Phase 2, copy only active Direction
+Goal IDs: siblings may overlap, children stay within their parent's Goal set,
+Compare uses the union of its candidates, and Compose/Portfolio use every Goal.
 
 Respect the hierarchy and lifecycle supplied by the Host's signed phase policy.
 Create every parent before its children, use the returned Task identity, and
@@ -55,11 +58,11 @@ ACCEPTed Task. Copy that whole object unchanged into `input_decision_refs`,
 candidate closures, and comparison references; never reconstruct it from a
 Task ID or an artifact URI.
 
-Every Phase2 Paragraph must include its accepted Structure's whole
-`accepted_decision_ref` unchanged in `input_decision_refs` and must copy that
-reference's whole `artifact_ref` unchanged into `base_artifact_ref`. Supplying
-only the Structure artifact URI, or a base without the Structure Decision, is
-invalid.
+A Phase2 Paragraph may begin independently with `base_artifact_ref: null`.
+When it patches a Structure, include that Structure's whole
+`accepted_decision_ref` and copy its artifact_ref unchanged into
+`base_artifact_ref`. Compose may adopt a Paragraph only together with a
+Structure that covers its scope.
 
 Use `max_tokens: 1000000` for every Task contract because real Qwen Worker plus
 Validator attempts can exceed 500k cumulative input and output tokens. A REVISE of a failed or inconclusive

script_build_host/src/script_build_host/application/mission_factory.py

@@ -45,6 +45,11 @@ class ScriptMissionFactory:
                 "description": "使用已验证并接受的创作方向",
                 "hard": True,
             },
+            {
+                "criterion_id": "direction-goals-satisfied",
+                "description": "全部父子 Goal 及其成功标准均有独立证据并得到满足",
+                "hard": True,
+            },
             {
                 "criterion_id": "structure-complete",
                 "description": "段落、元素、关系完整且引用有效",
@@ -144,58 +149,24 @@ class ScriptMissionFactory:
                 "input_snapshot_ref": f"script-build://inputs/{snapshot.snapshot_id}",
                 "input_sha256": snapshot.canonical_sha256,
                 "instruction": (
-                    "Follow the phase-two lifecycle exactly: (1) create the single "
-                    "CandidatePortfolio under Root with a scope_ref below the accepted "
-                    "Direction scope (for example <direction-scope>/portfolio/main); its "
-                    "initial input_decision_refs are "
-                    "empty because the accepted Direction is already frozen in the Phase2 "
-                    "Host context; "
-                    "(2) create a non-executable Compose child; (3) create and ACCEPT "
-                    "Structure, then Paragraph Tasks whose parent_task_id remains the open "
-                    "Compose Task while each Paragraph scope_ref is below the accepted "
-                    "Structure scope (completed Structure Tasks cannot receive framework "
-                    "children), plus "
-                    "optional ElementSet, "
-                    "Compare, or Retrieval increments; (4) REVISE Compose with the exact "
-                    "accepted closure and adoption order; (5) dispatch, validate, and "
-                    "ACCEPT Compose; (6) REVISE CandidatePortfolio with the accepted "
-                    "Compose closure; (7) dispatch, validate, ACCEPT CandidatePortfolio, "
-                    "then BLOCK Root at PHASE_TWO_CANDIDATE_PORTFOLIO_READY. Never "
-                    "dispatch an empty adoption container or cancel the unique portfolio. "
-                    "Keep business hierarchy in scope_ref, but use capability URIs in "
-                    "write_scope: CandidatePortfolio and Compose must use the exact parent "
-                    "capability script-build://writes; every Structure or Paragraph that "
-                    "creates paragraphs must "
-                    "include script-build://writes/paragraphs/<stable-selector>; every "
-                    "ElementSet that creates or links elements must include "
-                    "script-build://writes/elements/<stable-selector>. Never copy scope_ref "
-                    "into write_scope for workspace-writing Tasks. A Paragraph refining an "
-                    "accepted Structure must copy the whole Structure accepted_decision_ref "
-                    "unchanged into input_decision_refs and copy its whole artifact_ref "
-                    "unchanged into base_artifact_ref. "
-                    "Never place a Paragraph as a sibling of its Structure. "
-                    "Each Paragraph write_scope must also be below its Structure write_scope, "
-                    "for example Structure script-build://writes/paragraphs/main and Paragraph "
-                    "script-build://writes/paragraphs/main/opening. "
-                    "Dispatch at most "
-                    "four Tasks in one call because the concurrent Operation limit is four. "
-                    "When revising Compose for execution, include exactly one whole accepted "
-                    "Direction decision in input_decision_refs in addition to the candidate "
-                    "closure. Immediately before that REVISE, inspect the plan again and copy "
-                    "every accepted Structure and Paragraph decision under the Compose into "
-                    "candidate_decision_ids. The union of adopted_decision_ids and "
-                    "held_or_rejected_decision_ids must partition that complete candidate list; "
-                    "when adopting all candidates the held list is empty and compose_order lists "
-                    "every adopted Decision ID in intended script order. "
-                    "When revising CandidatePortfolio, input_decision_refs and the candidate "
-                    "closure contain only accepted Compose decisions, and compose_order must "
-                    "list the adopted Compose decision IDs exactly, including the single-ID "
-                    "case. With one accepted Compose, candidate_decision_ids, "
-                    "adopted_decision_ids, and compose_order are the same one-item list and "
-                    "held_or_rejected_decision_ids is empty; do not add Direction to Portfolio "
-                    "inputs. "
-                    "A Compose adopting any Paragraph must also include and adopt its covering "
-                    "Structure in the same candidate closure."
+                    "Create exactly one CandidatePortfolio as Root's Phase2 child. Plan any "
+                    "number and order of Structure, Paragraph, ElementSet, Retrieval and Compare "
+                    "increments demanded by the active Direction Goals; siblings may cover "
+                    "overlapping Goals. Every Phase2 contract has nonempty goal_ids, every "
+                    "creative Task pins the exact accepted Direction DecisionRef, and Compose "
+                    "and CandidatePortfolio carry all Direction Goal IDs. Retrieval needs valid "
+                    "goal_ids but need not read the whole Direction. Paragraph-first exploration "
+                    "may use a null base; a Paragraph patch must pin its accepted Structure, and "
+                    "Compose may adopt any Paragraph only with a Structure covering its scope. "
+                    "Compose and Portfolio remain non-executable containers until a REVISE "
+                    "partitions their complete accepted candidate closure and sets compose_order. "
+                    "Compose adopts the creative frontier; Portfolio adopts exactly one accepted "
+                    "StructuredScript. Both container input_decision_refs also pin the active "
+                    "Direction. CandidatePortfolio and Compose write only script-build://writes; "
+                    "paragraph writers stay below script-build://writes/paragraphs and element "
+                    "writers below script-build://writes/elements. Respect the Host concurrency "
+                    "limit. After the unique Portfolio is validated and ACCEPTed, BLOCK Root "
+                    "with PHASE_TWO_CANDIDATE_PORTFOLIO_READY."
                 ),
             },
             ensure_ascii=False,