fix(auth): restore self role lookup and lock regression coverage

docs/status/REAL_PROJECT_STATUS.md

@@ -1211,7 +1211,7 @@
 - 密码登录：启用
 - 邮箱验证码登录：仅在 SMTP 配置完整时启用
 - 短信验证码登录：仅在阿里云或腾讯云短信配置完整时启用
-- 账号绑定与解绑：邮箱 / 手机号 / 社交账号产品闭环已完成；邮箱与短信绑定分别依赖对应验证码通道配置
+- 账号绑定与解绑：邮箱/手机号仅在对应验证码通道启用时可发起；社交账号绑定依赖已配置的 OAuth provider。未配置时前端不会暴露可绑定 provider，后端绑定接口 fail-closed 返回 `503`，不能宣称该链路已默认产品闭环
 - 密码重置：仅在 SMTP 配置完整时启用
 - 首登管理员初始化：当系统不存在激活管理员时，`/login` 与 `/register` 会基于 `GET /api/v1/auth/capabilities` 暴露 `/bootstrap-admin` 入口；初始化成功后会直接进入后台，且该入口自动关闭
 - TOTP：启用

internal/api/handler/handler_test.go

@@ -757,18 +757,48 @@ func TestUserHandler_UpdateUserStatus_RequiresAdmin(t *testing.T) {
 	}
 }
 
-func TestUserHandler_GetUserRoles_ForbiddenForRegularUser(t *testing.T) {
+func TestUserHandler_GetUserRoles_SelfCanView(t *testing.T) {
 	server, cleanup := setupHandlerTestServer(t)
 	defer cleanup()
 
 	registerUser(server.URL, "rolesuser", "rolesuser@test.com", "UserPass123!")
 	token := getToken(server.URL, "rolesuser", "UserPass123!")
 
-	resp, _ := doGet(server.URL+"/api/v1/users/1/roles", token)
+	resp, body := doGet(server.URL+"/api/v1/users/1/roles", token)
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		t.Errorf("expected status %d for self role lookup, got %d, body: %s", http.StatusOK, resp.StatusCode, body)
+	}
+}
+
+func TestUserHandler_GetUserRoles_ForbiddenForOtherRegularUser(t *testing.T) {
+	server, cleanup := setupHandlerTestServer(t)
+	defer cleanup()
+
+	registerUser(server.URL, "rolesuser", "rolesuser@test.com", "UserPass123!")
+	registerUser(server.URL, "otherrolesuser", "otherrolesuser@test.com", "UserPass123!")
+	token := getToken(server.URL, "rolesuser", "UserPass123!")
+
+	resp, _ := doGet(server.URL+"/api/v1/users/2/roles", token)
 	defer resp.Body.Close()
 
 	if resp.StatusCode != http.StatusForbidden {
-		t.Errorf("expected status %d for non-admin user, got %d", http.StatusForbidden, resp.StatusCode)
+		t.Errorf("expected status %d for viewing another user's roles, got %d", http.StatusForbidden, resp.StatusCode)
+	}
+}
+
+func TestUserHandler_GetUserRoles_UnauthorizedWithoutToken(t *testing.T) {
+	server, cleanup := setupHandlerTestServer(t)
+	defer cleanup()
+
+	registerUser(server.URL, "rolesuser", "rolesuser@test.com", "UserPass123!")
+
+	resp, _ := doGet(server.URL+"/api/v1/users/1/roles", "")
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusUnauthorized {
+		t.Errorf("expected status %d without token, got %d", http.StatusUnauthorized, resp.StatusCode)
 	}
 }
 
@@ -790,6 +820,23 @@ func TestUserHandler_GetUserRoles_AdminCanViewOther(t *testing.T) {
 	}
 }
 
+func TestUserHandler_GetUserRoles_AdminGetsNotFoundForMissingUser(t *testing.T) {
+	server, cleanup := setupHandlerTestServer(t)
+	defer cleanup()
+
+	token := bootstrapAdminToken(server.URL, "rolesbootstrap", "rolesbootstrap@test.com", "AdminPass123!")
+	if token == "" {
+		t.Fatal("bootstrap admin token should succeed")
+	}
+
+	resp, _ := doGet(server.URL+"/api/v1/users/99999/roles", token)
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusNotFound {
+		t.Errorf("expected status %d for missing user, got %d", http.StatusNotFound, resp.StatusCode)
+	}
+}
+
 func TestUserHandler_AssignRoles_RequiresAdmin(t *testing.T) {
 	server, cleanup := setupHandlerTestServer(t)
 	defer cleanup()

internal/api/router/router.go

@@ -212,7 +212,7 @@ func (r *Router) Setup() *gin.Engine {
 				users.DELETE("/:id", middleware.RequirePermission("user:delete"), r.userHandler.DeleteUser)
 				users.PUT("/:id/password", r.userHandler.UpdatePassword)
 				users.PUT("/:id/status", middleware.RequirePermission("user:manage"), r.userHandler.UpdateUserStatus)
-				users.GET("/:id/roles", middleware.RequirePermission("user:manage"), r.userHandler.GetUserRoles)
+				users.GET("/:id/roles", r.userHandler.GetUserRoles)
 				users.PUT("/:id/roles", middleware.RequirePermission("user:manage"), r.userHandler.AssignRoles)
 				users.PUT("/batch/status", middleware.RequirePermission("user:manage"), r.userHandler.BatchUpdateStatus)
 				users.DELETE("/batch", middleware.RequirePermission("user:delete"), r.userHandler.BatchDelete)