新增LLM审计摘要边界

src/lib/llm/__tests__/audit.test.ts

@@ -0,0 +1,37 @@
+import { describe, expect, it } from "vitest";
+
+import { createLlmAuditSummary, hashContent } from "../audit";
+
+describe("LLM audit summary", () => {
+  it("hashes content deterministically", async () => {
+    await expect(hashContent("abc")).resolves.toBe(
+      "ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad",
+    );
+  });
+
+  it("does not retain raw prompt or response", async () => {
+    const summary = await createLlmAuditSummary({
+      provider: "deepseek",
+      model: "deepseek-v4-pro",
+      task: "renwei_copy_optimizer",
+      duration_ms: 12,
+      schema_valid: true,
+      prompt: "完整 prompt 不应长期保存",
+      output: "完整 response 不应长期保存",
+      error_summary: null,
+    });
+
+    expect(summary).toMatchObject({
+      provider: "deepseek",
+      model: "deepseek-v4-pro",
+      task: "renwei_copy_optimizer",
+      duration_ms: 12,
+      schema_valid: true,
+      error_summary: null,
+    });
+    expect(JSON.stringify(summary)).not.toContain("完整 prompt");
+    expect(JSON.stringify(summary)).not.toContain("完整 response");
+    expect(summary.input_hash).toHaveLength(64);
+    expect(summary.output_hash).toHaveLength(64);
+  });
+});