diff --git a/cocoscreator_projects/YouleNexus/assets/framework/core/types/envelope.ts b/cocoscreator_projects/YouleNexus/assets/framework/core/types/envelope.ts
new file mode 100644
index 0000000..66a0d75
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+++ b/cocoscreator_projects/YouleNexus/assets/framework/core/types/envelope.ts
@@ -0,0 +1,16 @@
+import type { RouteName } from '../constants.ts';
+
+/** 客户端→服务器 单层信封。来源 docs/protocol/01 §3.1。 */
+export interface OutboundEnvelope<T = unknown> {
+  app: 'youle';
+  route: RouteName | string; // 游戏内 route 为子游戏名
+  rpc: string;
+  data: T;
+}
+
+/** 服务器→客户端 解包后的内层。来源 docs/protocol/01 §3.2。 */
+export interface InboundMessage<T = unknown> {
+  route: string;
+  rpc: string;
+  data: T;
+}
diff --git a/cocoscreator_projects/YouleNexus/assets/framework/core/types/login.ts b/cocoscreator_projects/YouleNexus/assets/framework/core/types/login.ts
new file mode 100644
index 0000000..846b0be
--- /dev/null
+++ b/cocoscreator_projects/YouleNexus/assets/framework/core/types/login.ts
@@ -0,0 +1,26 @@
+/**
+ * player_login 请求/响应（最小集）。完整字段以 docs/protocol/01 §6、02、04 为准（spec §0.1）。
+ * 用索引签名容纳本最小集未显式列出的协议字段，避免在此内联复制全部协议字段。
+ */
+export interface LoginRequestData {
+  agentid: number | string;
+  gameid: number | string;
+  openid: string;
+  nickname: string;
+  avatar: string;
+  sex: number;
+  province: string;
+  city: string;
+  unionid: string | number;
+  version: string;
+  channelid: number | string;
+  marketid: number | string;
+  [extra: string]: unknown; // location/ip/machineid/telphone 等由 Send_login 注入，见 docs/protocol/01 §6
+}
+
+/** 登录响应 A 组账号资产（核心字段）。完整见 docs/protocol/04。 */
+export interface LoginResponseData {
+  state: number; // 0=成功
+  playerid: number;
+  [extra: string]: unknown; // bean/roomcard/charm/... 及 B 组房间恢复字段 roomcode/isbattle/deskinfo
+}
diff --git a/cocoscreator_projects/framework-tests/core/types.typetest.ts b/cocoscreator_projects/framework-tests/core/types.typetest.ts
new file mode 100644
index 0000000..ba4b5b3
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+++ b/cocoscreator_projects/framework-tests/core/types.typetest.ts
@@ -0,0 +1,9 @@
+import type { OutboundEnvelope, InboundMessage } from '../../YouleNexus/assets/framework/core/types/envelope.ts';
+import type { LoginRequestData, LoginResponseData } from '../../YouleNexus/assets/framework/core/types/login.ts';
+
+const out: OutboundEnvelope<LoginRequestData> = {
+  app: 'youle', route: 'agent', rpc: 'player_login',
+  data: { agentid: 1, gameid: 2, openid: 'o', nickname: 'n', avatar: 'a', sex: 0, province: '', city: '', unionid: 'u', version: '1', channelid: 0, marketid: 0 },
+};
+const inb: InboundMessage<LoginResponseData> = { route: 'agent', rpc: 'player_login', data: { state: 0, playerid: 9 } };
+void out; void inb;