fix(agent/file): NewIFileService should return IFileService, not FileService

[eddieran]

Summary

agent/app/service/file.go:94 declares the constructor with a bare struct return type:

func NewIFileService() FileService {
    return &FileService{}
}

But the body returns a pointer (&FileService{}), and the function name (NewIFileService) suggests the caller should receive the interface (IFileService).

Repro

`go build ./...` on the `agent` module currently fails:

$ go build ./...
# github.com/1Panel-dev/1Panel/agent/app/service
app/service/file.go:95:9: cannot use &FileService{} (value of type *FileService) as FileService value in return statement
app/service/website_proxy.go:276:36: cannot call pointer method GetFileList on FileService

The second error is a downstream consequence: website_proxy.go:276 calls NewIFileService().GetFileList(...), which fails because GetFileList has a pointer receiver but NewIFileService is declared to return a value.

Fix

One-line change: declare the return type as the interface.

-func NewIFileService() FileService {
+func NewIFileService() IFileService {
        return &FileService{}
 }

*FileService implements every method on IFileService (verified with go vet ./...).

Verification

• go build ./... — clean
• go vet ./... — clean

Notes

This regression appears to have been introduced in commit `e57dc12` (#12529 area). No other call sites of `NewIFileService` reference the concrete type; switching to the interface is fully source-compatible with existing consumers.

[f2c-ci-robot]

Adding the "do-not-merge/release-note-label-needed" label because no release-note block was detected, please follow our release note process to remove it.

Details

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.

[f2c-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by:
Once this PR has been reviewed and has the lgtm label, please assign wanghe-fit2cloud for approval. For more information see the Code Review Process.

The full list of commands accepted by this bot can be found here.

Details

Needs approval from an approver in each of these files:

• OWNERS

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment