Runtime 25.08: Consider using the libsecret module from the runtime

The Freedesktop runtime version **25.08** (also GNOME runtime **49**, KDE runtime **6.10**, and **5.15-25.08**) provides the **libsecret** module.

In most cases, you don't need to build this module separately, unless your project requires a specific version or a custom configuration.

**Related manifest file:**

https://gitlab.com/freedesktop-sdk/freedesktop-sdk/-/blob/release/25.08/elements/components/libsecret.bst

Start by reading the linked freedesktop-sdk components/libsecret.bst manifest for runtime 25.08, then inspect this repository's build or packaging manifest to see how libsecret is currently provided. Done means determining whether the project builds a separate libsecret module and documenting or applying the runtime-based alternative, if appropriate.

Written by the indexing model from the issue text.