Add capability-probed structured outputs and a prototype/instance creation graph.

Probe API profiles for json_schema/tools, flatten worker artifacts onto a strict schema, and let users spawn or revise graph nodes instead of a one-shot DAG.

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

tests/json-doc.test.ts

@@ -0,0 +1,39 @@
+import { describe, expect, it } from "vitest";
+import {
+  convertStructuralSmartQuotes,
+  tryParseJsonDoc,
+} from "../web/json-doc.js";
+
+describe("tryParseJsonDoc", () => {
+  it("keeps interior Chinese quotes in an otherwise valid fragment", () => {
+    const raw = JSON.stringify({
+      schema: "context-fragment.v1",
+      技能: "美学纲领与交互范式",
+      正文: {
+        设定逻辑: {
+          参与方式: {
+            用户与user关系: {
+              依据: "用户明确“只有我不会被感染”，且为爽文主角",
+            },
+          },
+        },
+      },
+    });
+    const parsed = tryParseJsonDoc(`## 设计.美学纲领与交互范式\n\n${raw}`);
+    expect(parsed?.技能).toBe("美学纲领与交互范式");
+    expect(parsed?.正文?.设定逻辑?.参与方式?.用户与user关系?.依据).toContain(
+      "只有我不会被感染",
+    );
+  });
+
+  it("parses JSON that uses smart quotes as delimiters", () => {
+    const raw = "{“schema”:“context-fragment.v1”,“brief”:“点题”}";
+    expect(convertStructuralSmartQuotes(raw)).toBe(
+      '{"schema":"context-fragment.v1","brief":"点题"}',
+    );
+    expect(tryParseJsonDoc(raw)).toEqual({
+      schema: "context-fragment.v1",
+      brief: "点题",
+    });
+  });
+});