Expected behavior and actual behavior:
According to the Harbor installation documentation, users should be able to optionally download the corresponding *.asc file to verify that the package is genuine using GPG.

However, in the release page for latest releases, there are no *.asc files available for either the online or offline installers. This makes it impossible to follow the official verification instructions.

Steps to reproduce the problem:

1. Navigate to the Harbor releases page: https://github.com/goharbor/harbor/releases/tag/v2.14.0
2. Try to locate the corresponding .asc signature file in the release assets (not present).
3. Follow the docs to verify the installer bundle with GPG → fails because .asc files are missing.

Versions:

• harbor version: latest
• docker engine version: NA
• docker-compose version: NA

Additional context:

• Documentation reference: https://goharbor.io/docs/2.13.0/install-config/download-installer/

• The docs specifically mention that the .asc file should be available to verify signatures, but it seems to be missing from the latest release assets.

• The .asc signature files were available up until v2.11, but are no longer provided in releases after that.