[cloudsmith-iduffy]

Description

cloudsmith credential-helper list stopped with an error when one helper's config file was odd, and the other helpers were not listed at all.

Before, with ~/.docker/config.json set to {"credHelpers": ["x"]}:

$ cloudsmith credential-helper list
Error: AttributeError: 'list' object has no attribute 'items'

After:

$ cloudsmith credential-helper list
cargo  (Cargo credential provider for Cloudsmith registries)
  launcher : not installed
  hosts    : none configured
docker  (Docker credential helper for Cloudsmith registries)
  launcher : not installed
  hosts    : none configured
pnpm  (pnpm credential helper for Cloudsmith registries)
  launcher : not installed
  hosts    : none configured
terraform  (Terraform credentials helper for Cloudsmith registries)
  launcher : not installed
  hosts    : none configured

I checked the status() method of all four helpers with bad input: wrong JSON/TOML types, files that are not UTF-8, directories in place of files, and files with no read permission. These cases crashed:

• Docker: a credHelpers value that is not an object (list, string, null), and a config.json that is not UTF-8.
• pnpm: an .npmrc that is not UTF-8, that is a directory, or that the CLI cannot read.
• Terraform: a .terraformrc that is not UTF-8.

Cargo already handled all of these. Each status() now reports no hosts for a bad file, so list shows that helper as not configured and continues.

Type of Change

• Bug fix
• New feature
• Breaking change
• Documentation update
• Refactoring
• Other (please describe)

Additional Notes

The change stays inside the status() methods. It does not touch uninstall or merge_config_file, which other open PRs change.

🤖 Generated with Claude Code

[Copilot]

🟢 Approval recommended

The localized error handling preserves valid-configuration behavior, with regression coverage and no identified blocking issues.

No open issues 🎉

What changed in this PR

Keeps cloudsmith credential-helper list running when a helper’s configuration is malformed or unreadable, so other helpers remain visible.

Changes:

• Adds defensive configuration handling to Docker, pnpm, and Terraform status checks.
• Adds regression tests confirming bad configurations report no hosts without interrupting the list.
• Documents the fix in the changelog.

File	Description
cloudsmith_cli/​credential_helpers/​terraform/​installer.py	Handles invalid UTF-8 during status checks.
cloudsmith_cli/​credential_helpers/​pnpm/​installer.py	Handles unreadable or undecodable .npmrc files.
cloudsmith_cli/​credential_helpers/​docker/​installer.py	Guards malformed credHelpers values and decoding errors.
cloudsmith_cli/​cli/​tests/​commands/​test_credential_helper_install.py	Tests continued listing with bad helper configurations.
CHANGELOG.md	Describes the corrected listing behavior.

_{Review effort: Balanced}