registry repository list-v2 ignores --format and --no-header flags

[silvercondor]

Describe the Issue:

The --format and --no-header flags are completely ignored by doctl registry repository list-v2. The command outputs all columns with headers regardless of the format specified.

Steps to reproduce:

# Expected: Only repository names, no header
doctl registry repository list-v2 --format Name --no-header

# Actual output: Full table with all columns and header
Name                       Latest Manifest                                                            Latest Tag    Tag Count    Manifest Count    Updated At
my-app-prod                sha256:a1b2c3d4e5f6a1b2c3d4e5f6a1b2c3d4e5f6a1b2c3d4e5f6a1b2c3d4e5f6a1b2    latest        2            3                 2025-12-04 06:57:34 +0000 UTC
my-app-stg                 sha256:f6e5d4c3b2a1f6e5d4c3b2a1f6e5d4c3b2a1f6e5d4c3b2a1f6e5d4c3b2a1f6e5    latest        3            5                 2025-12-11 18:35:05 +0000 UTC

Expected behavior:

doctl registry repository list-v2 --format Name --no-header
# Should output:
my-app-prod
my-app-stg
...

Workaround:

Using --output json with jq works correctly:

doctl registry repository list-v2 --output json | jq -r '.[].name'

Environment:

• doctl version: 1.148.0 (also reproduced on 1.141.0 in CI)
• OS: Ubuntu 22.04 / Ubuntu 24.04 (GitHub Actions)
• Installation method: GitHub Actions digitalocean/action-doctl@v2

Additional Details:

The same issue affects doctl registry repository list (non-v2). This breaks scripts that rely on grep -Fxq for exact matching since the full row is returned instead of just the name.

Additional Note: We noticed this issue started to happen since December 27th

[timofey-drozhzhin]

Can confirm. It would be nice to include tests to prevent this in the future.