落地偏好库与文风库存盘及注册表，便于创作节点按绑定注入。

先定无检索的节点绑定模型，替代原先未实现的检索方案。

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

tests/libraries.test.ts

@@ -0,0 +1,54 @@
+import { describe, expect, it, beforeEach } from "vitest";
+import { mkdtempSync } from "node:fs";
+import { tmpdir } from "node:os";
+import path from "node:path";
+
+describe("libraries registry", () => {
+  beforeEach(() => {
+    process.env.WRITING_AGENT_DATA_DIR = mkdtempSync(
+      path.join(tmpdir(), "wa-lib-"),
+    );
+  });
+
+  it("formats style-packs and preferences when non-empty", async () => {
+    const { createStylePack } = await import("../src/style-pack/store.js");
+    const { ensureStarterPreferences } = await import(
+      "../src/preference/store.js"
+    );
+    const {
+      formatBoundLibrariesForPrompt,
+      collectLibraryIdsFromModules,
+    } = await import("../src/libraries/index.js");
+
+    ensureStarterPreferences();
+    createStylePack({
+      name: "锋利爽文",
+      content: "短句推进；示范：他抬眼，门开了。",
+    });
+
+    const style = formatBoundLibrariesForPrompt(["style-packs"]);
+    expect(style).toContain("【文风库 · 可选用】");
+    expect(style).toContain("锋利爽文");
+
+    const pref = formatBoundLibrariesForPrompt(["preferences"]);
+    expect(pref).toContain("【偏好库 · 可选用】");
+    expect(pref).toContain("被 NTR");
+
+    expect(formatBoundLibrariesForPrompt(["unknown-lib"])).toBe("");
+    expect(
+      collectLibraryIdsFromModules([
+        { libraries: ["style-packs"] },
+        { libraries: ["preferences", "style-packs"] },
+      ]),
+    ).toEqual(["style-packs", "preferences"]);
+  });
+
+  it("skips empty style-packs library", async () => {
+    const { formatBoundLibrariesForPrompt } = await import(
+      "../src/libraries/index.js"
+    );
+    // 空文风库 → 空串；偏好库有起步条目仍会有内容
+    expect(formatBoundLibrariesForPrompt(["style-packs"])).toBe("");
+  });
+});
+