重构世界模拟器为模块化配方架构，完善创作编排、会话运行时与 Web UI，并清理过时技能。

Co-authored-by: Cursor <cursoragent@cursor.com>

src/skills/context-segments.ts

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+/**
+ * Worker contextSegments 拼装：按 tier 顺序把黑板 tag 拼成 Markdown。
+ * 见 docs/context-assembly.md
+ */
+import type { Blackboard } from "../blackboard/blackboard.js";
+import type { BlackboardInputMerge } from "../types/blackboard.js";
+import { CONTEXT_BRIEF_TAG } from "../runtime/compress-after-worker.js";
+import {
+  CREATION_ACCEPTED_CONTENT_TAG,
+  formatAcceptedContentForPrompt,
+} from "./creation-units.js";
+
+export type ContextSegmentTier = "static" | "dynamic";
+
+export type ContextSegmentDef = {
+  id: string;
+  tier: ContextSegmentTier;
+  tags: string[];
+  label?: string;
+  /** latest | concat | tail_lines_N */
+  policy?: string;
+};
+
+export function parseContextSegments(raw: unknown): ContextSegmentDef[] {
+  if (!Array.isArray(raw)) return [];
+  const out: ContextSegmentDef[] = [];
+  for (const row of raw) {
+    if (!row || typeof row !== "object" || Array.isArray(row)) continue;
+    const r = row as Record<string, unknown>;
+    const id = typeof r.id === "string" ? r.id.trim() : "";
+    const tier = r.tier === "dynamic" ? "dynamic" : "static";
+    const tags = Array.isArray(r.tags)
+      ? r.tags.filter((t): t is string => typeof t === "string" && t.trim()).map((t) => t.trim())
+      : [];
+    if (!id || tags.length === 0) continue;
+    out.push({
+      id,
+      tier,
+      tags,
+      label: typeof r.label === "string" ? r.label.trim() : undefined,
+      policy: typeof r.policy === "string" ? r.policy.trim() : undefined,
+    });
+  }
+  return out;
+}
+
+function applyPolicy(content: string, policy?: string): string {
+  if (!policy || policy === "latest" || policy === "concat") return content;
+  const m = /^tail_lines_(\d+)$/.exec(policy);
+  if (m) {
+    const n = Number(m[1]);
+    if (Number.isFinite(n) && n > 0) {
+      const lines = content.split(/\r?\n/);
+      return lines.slice(-n).join("\n");
+    }
+  }
+  return content;
+}
+
+function readTagContent(
+  tag: string,
+  inputs: Record<string, string>,
+  blackboard: Blackboard,
+  inputMerge: BlackboardInputMerge,
+): string {
+  if (inputs[tag]?.trim()) return inputs[tag]!.trim();
+  const items = blackboard.queryByPatterns([tag], inputMerge);
+  if (items.length === 0) return "";
+  if (inputMerge === "concat") {
+    return items.map((i) => i.content).filter(Boolean).join("\n\n");
+  }
+  return items[items.length - 1]?.content?.trim() ?? "";
+}
+
+function formatSegmentBody(
+  segment: ContextSegmentDef,
+  inputs: Record<string, string>,
+  blackboard: Blackboard,
+  inputMerge: BlackboardInputMerge,
+): string {
+  const parts: string[] = [];
+  for (const tag of segment.tags) {
+    let content = readTagContent(tag, inputs, blackboard, inputMerge);
+    if (!content) continue;
+    if (tag === CREATION_ACCEPTED_CONTENT_TAG) {
+      content = formatAcceptedContentForPrompt(content);
+    }
+    content = applyPolicy(content, segment.policy);
+    if (!content.trim()) continue;
+    parts.push(content.trim());
+  }
+  return parts.join("\n\n");
+}
+
+/**
+ * 按 contextSegments 拼装 user 侧上下文。
+ * 无 segments 时回退为 JSON inputs（兼容旧 skill）。
+ */
+export function assembleWorkerContext(params: {
+  inputs: Record<string, string>;
+  segments?: ContextSegmentDef[] | null;
+  blackboard: Blackboard;
+  inputMerge?: BlackboardInputMerge;
+  workerId: string;
+  workerName: string;
+  outputTags: string[];
+}): string {
+  const inputMerge = params.inputMerge ?? "latest";
+  const segments = params.segments ?? [];
+
+  if (segments.length === 0) {
+    return JSON.stringify(
+      {
+        workerId: params.workerId,
+        workerName: params.workerName,
+        outputTags: params.outputTags,
+        inputs: params.inputs,
+        instruction:
+          "根据 SKILL 说明完成任务。若 inputs 含「上下文.定稿摘要」，以终产物为准。" +
+          "设计.worker集 / 草稿须为 JSON 对象文本。",
+      },
+      null,
+      2,
+    );
+  }
+
+  const staticSegs = segments.filter((s) => s.tier === "static");
+  const dynamicSegs = segments.filter((s) => s.tier === "dynamic");
+  const blocks: string[] = [];
+
+  const render = (seg: ContextSegmentDef) => {
+    const body = formatSegmentBody(seg, params.inputs, params.blackboard, inputMerge);
+    if (!body) return;
+    if (seg.label) {
+      blocks.push(`${seg.label}\n\n${body}`);
+    } else {
+      blocks.push(body);
+    }
+  };
+
+  for (const seg of staticSegs) render(seg);
+  for (const seg of dynamicSegs) render(seg);
+
+  // 定稿摘要：若未在 segments 中声明，仍附在末尾
+  const brief = params.inputs[CONTEXT_BRIEF_TAG]?.trim();
+  const briefInSegments = segments.some((s) => s.tags.includes(CONTEXT_BRIEF_TAG));
+  if (brief && !briefInSegments) {
+    blocks.push(`## 上下文.定稿摘要\n\n${brief}`);
+  }
+
+  blocks.push(
+    [
+      "## 本步任务",
+      "",
+      `- workerId: \`${params.workerId}\``,
+      `- workerName: ${params.workerName}`,
+      `- outputTags: ${params.outputTags.map((t) => `\`${t}\``).join("、") || "（无）"}`,
+      "",
+      "按 SKILL 与上方分区完成任务。标为「只读 / 已定稿」的分区不要擅自改写；只改【本单位】范围。",
+      "设计.worker集 / 草稿须为 JSON 对象文本（以 `{` 开头）。",
+    ].join("\n"),
+  );
+
+  return blocks.join("\n\n---\n\n");
+}