引入游玩回合与开场收口，抽出可替换 agent 司机并支持运行中止；完善预设洞位、世界书拼装与试跑，并打磨会话运行时与 Web 交互。

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

tests/preset-probe.test.ts

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+import { describe, expect, it } from "vitest";
+import { importSillyTavernPreset } from "../src/preset/importer.js";
+import {
+  assemblePresetProbe,
+  DEFAULT_PROBE_CONTEXT,
+  PROBE_SYSTEM_PROMPT,
+  runPresetProbe,
+} from "../src/preset/probe.js";
+
+function samplePreset() {
+  return importSillyTavernPreset({
+    prompts: [
+      { identifier: "main", name: "Main", role: "system", content: "MAIN" },
+      {
+        identifier: "charDescription",
+        name: "Desc",
+        role: "system",
+        marker: true,
+      },
+      {
+        identifier: "chatHistory",
+        name: "History",
+        role: "system",
+        marker: true,
+      },
+      { identifier: "jailbreak", name: "PHI", role: "system", content: "PHI" },
+    ],
+    prompt_order: [
+      {
+        character_id: 1,
+        order: [
+          { identifier: "main", enabled: true },
+          { identifier: "charDescription", enabled: true },
+          { identifier: "chatHistory", enabled: true },
+          { identifier: "jailbreak", enabled: true },
+        ],
+      },
+    ],
+  }).preset;
+}
+
+describe("assemblePresetProbe", () => {
+  it("fills the sandwich with sample lore, history, and the current turn", () => {
+    const messages = assemblePresetProbe(samplePreset(), {
+      message: "我推开门。",
+    });
+
+    expect(messages.map((m) => [m.role, m.content])).toEqual([
+      ["system", PROBE_SYSTEM_PROMPT],
+      ["system", "MAIN"],
+      ["system", `### 试跑设定\n\n${DEFAULT_PROBE_CONTEXT.loreBefore}`],
+      ["system", DEFAULT_PROBE_CONTEXT.history],
+      ["system", `### 本轮状态\n\n${DEFAULT_PROBE_CONTEXT.loreAfter}`],
+      ["user", "我推开门。"],
+      ["system", "PHI"],
+    ]);
+  });
+
+  it("omits empty optional bags", () => {
+    const messages = assemblePresetProbe(samplePreset(), {
+      message: "你好",
+      loreBefore: "",
+      history: "",
+      loreAfter: "",
+      postTurn: "",
+    });
+
+    expect(messages.map((m) => m.content)).toEqual([
+      PROBE_SYSTEM_PROMPT,
+      "MAIN",
+      "你好",
+      "PHI",
+    ]);
+  });
+});
+
+describe("runPresetProbe", () => {
+  it("returns assembled messages without calling a model", async () => {
+    const result = await runPresetProbe({
+      preset: samplePreset(),
+      input: { message: "我推开门。" },
+    });
+
+    expect(result.completed).toBe(false);
+    expect(result.reply).toBeNull();
+    expect(result.messages.some((m) => m.content === "我推开门。")).toBe(true);
+  });
+
+  it("returns the model reply when complete is provided", async () => {
+    const result = await runPresetProbe({
+      preset: samplePreset(),
+      input: { message: "我推开门。" },
+      complete: async () => ({ content: "请进。", reasoning: "短回复" }),
+    });
+
+    expect(result.completed).toBe(true);
+    expect(result.reply).toBe("请进。");
+    expect(result.reasoning).toBe("短回复");
+  });
+
+  it("keeps messages when generate fails", async () => {
+    const result = await runPresetProbe({
+      preset: samplePreset(),
+      input: { message: "我推开门。" },
+      complete: async () => {
+        throw new Error("upstream down");
+      },
+    });
+
+    expect(result.completed).toBe(false);
+    expect(result.error).toBe("upstream down");
+    expect(result.messages.length).toBeGreaterThan(0);
+  });
+
+  it("rejects an empty turn", async () => {
+    await expect(
+      runPresetProbe({
+        preset: samplePreset(),
+        input: { message: "   " },
+      }),
+    ).rejects.toThrow("缺少本轮输入");
+  });
+});