chore: initial commit

Laimiao agent v2 service: agent orchestration, sessions, billing,
gateway client, skills catalog, auth, config, plus tests.

tests/sessions.test.ts

@@ -0,0 +1,61 @@
+import { join } from "node:path";
+import { describe, expect, it } from "vitest";
+import { SessionStore } from "../src/sessions/store.js";
+import { silentLogger, tempRoot } from "./helpers.js";
+
+function makeStore(root: string) {
+  return new SessionStore(join(root, "sessions.json"), join(root, "messages"), silentLogger);
+}
+
+describe("SessionStore", () => {
+  it("creates, lists, and owns sessions", async () => {
+    const store = makeStore(tempRoot());
+    const session = await store.create({ uid: "1", team_id: "t1" }, { title: "hello" });
+    expect((await store.get(session.session_id))?.title).toBe("hello");
+    expect((await store.getOwned({ uid: "1", team_id: "t1" }, session.session_id))?.session_id).toBe(
+      session.session_id,
+    );
+    expect(await store.getOwned({ uid: "2", team_id: "t1" }, session.session_id)).toBeUndefined();
+    expect((await store.list({ uid: "1" })).total).toBe(1);
+    expect((await store.list({ uid: "2" })).total).toBe(0);
+  });
+
+  it("appends messages, updates metadata, and auto-titles from the first user message", async () => {
+    const store = makeStore(tempRoot());
+    const session = await store.create({ uid: "1", team_id: "t1" });
+    await store.append(session.session_id, {
+      role: "user",
+      mode: "agent",
+      content: "帮我做一张云南海报",
+      media: [],
+      status: "ok",
+    });
+    await store.append(session.session_id, {
+      role: "assistant",
+      mode: "image",
+      content: "已完成",
+      media: [{ type: "image", url: "https://img/1.png" }],
+      status: "ok",
+    });
+
+    const meta = await store.get(session.session_id);
+    expect(meta?.message_count).toBe(2);
+    expect(meta?.last_mode).toBe("image");
+    expect(meta?.title).toBe("帮我做一张云南海报");
+    const messages = await store.messages(session.session_id);
+    expect(messages).toHaveLength(2);
+    expect(messages[1]?.media[0]?.url).toBe("https://img/1.png");
+  });
+
+  it("persists the index and paginates", async () => {
+    const root = tempRoot();
+    const store = makeStore(root);
+    for (let index = 0; index < 3; index += 1) {
+      await store.create({ uid: "1", team_id: "t1" }, { title: `s${index}` });
+    }
+    const reloaded = makeStore(root);
+    expect((await reloaded.list({ uid: "1" })).total).toBe(3);
+    expect((await reloaded.list({ uid: "1", limit: 2 })).sessions).toHaveLength(2);
+    expect((await reloaded.list({ uid: "1", limit: 2, offset: 2 })).sessions).toHaveLength(1);
+  });
+});