Feat: enhance Linux credential management with secure storage and retrieval

[gautamdsheth]

Type

• Bug Fix
• New Feature
• Sample

Related Issues?

Fixes NA

What is in this Pull Request ?

Fix linux cred management issue

[Copilot]

Pull request overview

Adds native Linux Secret Service support for stored credentials.

Changes:

• Adds Linux credential write/read/remove operations.
• Separates credential and managed-app-ID keyring schemas.
• Reorganizes documentation navigation and adds a changelog entry.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
src/Commands/Utilities/CredentialManager.cs	Implements Linux credential persistence.
pages/articles/toc.yml	Reorganizes article navigation.
CHANGELOG.md	Documents the Linux fix.

Suppressed comments (2)

src/Commands/Utilities/CredentialManager.cs:134

• This Linux read path is also reachable only when the SecretManagement module is absent. If the module is installed without a default vault, lines 98-106 do not return a credential, but this else branch is skipped and the method returns null. Move the OS fallback outside the HasSecretManagement() else so an empty default vault falls through to the keyring.

                if (OperatingSystem.IsLinux())
                {
                    var cred = ReadLinuxCredentialEntry(name);
                    if (cred == null)
                    {
                        cred = ReadLinuxCredentialEntry($"PnPPS:{name}");
                    }
                    return cred;

src/Commands/Utilities/CredentialManager.cs:216

• As with add/get, this keyring removal is skipped whenever SecretManagement is installed, even if GetDefaultVault() returns empty. A native Linux credential then cannot be removed after installing the module or in the stated installed-but-unconfigured scenario. Fall through to this OS-specific removal whenever no default vault is available.

                if (OperatingSystem.IsLinux())
                {
                    success = DeleteLinuxCredentialEntry(name);
                    if (!success)
                    {
                        success = DeleteLinuxCredentialEntry($"PnPPS:{name}");
                    }
                    return success;