feat: Implement public access for tenant content

- Add TenantOptionalAuth middleware to allow access to public content without requiring authentication.
- Introduce ListPublicPublished and PublicDetail methods in the content service to retrieve publicly accessible content.
- Create tenant_public HTTP routes for listing and showing public content, including preview and main asset retrieval.
- Enhance content tests to cover scenarios for public content access and permissions.
- Update specifications to reflect the new public content access features and rules.

backend/app/services/tenant_join_test.go

@@ -10,7 +10,7 @@ import (
 	"quyun/v2/app/commands/testx"
 	"quyun/v2/app/errorx"
 	tenantdto "quyun/v2/app/http/tenant/dto"
-	tenantjoindto "quyun/v2/app/http/tenantjoin/dto"
+	tenant_join_dto "quyun/v2/app/http/tenant_join/dto"
 	"quyun/v2/database"
 	"quyun/v2/database/models"
 	"quyun/v2/pkg/consts"
@@ -262,7 +262,7 @@ func (s *TenantJoinTestSuite) Test_CreateJoinRequest() {
 				Status:   consts.UserStatusVerified,
 			}).Error, ShouldBeNil)
 
-			_, err := Tenant.CreateJoinRequest(ctx, tenantID, userID, &tenantjoindto.JoinRequestCreateForm{Reason: "x"})
+			_, err := Tenant.CreateJoinRequest(ctx, tenantID, userID, &tenant_join_dto.JoinRequestCreateForm{Reason: "x"})
 			So(err, ShouldNotBeNil)
 
 			var appErr *errorx.AppError
@@ -273,11 +273,11 @@ func (s *TenantJoinTestSuite) Test_CreateJoinRequest() {
 		Convey("重复提交应返回同一个 pending 申请（幂等）", func() {
 			s.truncateAll(ctx)
 
-			out1, err := Tenant.CreateJoinRequest(ctx, tenantID, userID, &tenantjoindto.JoinRequestCreateForm{Reason: "a"})
+			out1, err := Tenant.CreateJoinRequest(ctx, tenantID, userID, &tenant_join_dto.JoinRequestCreateForm{Reason: "a"})
 			So(err, ShouldBeNil)
 			So(out1, ShouldNotBeNil)
 
-			out2, err := Tenant.CreateJoinRequest(ctx, tenantID, userID, &tenantjoindto.JoinRequestCreateForm{Reason: "b"})
+			out2, err := Tenant.CreateJoinRequest(ctx, tenantID, userID, &tenant_join_dto.JoinRequestCreateForm{Reason: "b"})
 			So(err, ShouldBeNil)
 			So(out2, ShouldNotBeNil)
 			So(out2.ID, ShouldEqual, out1.ID)