Add decode plugin

[crackmac]

Plugin Information

Plugin Name: decode
Repository: https://github.com/crackmac/kubectl-decode-plugin
Version: v0.1.0

Description

kubectl-decode is a plugin that decodes base64-encoded values in Kubernetes secrets, making them easily readable.

Features

• 🔓 Multiple output formats: JSON (default), YAML, and human-readable table
• 🎯 Namespace support with -n/--namespace flag
• 🌐 Context support with --context flag for multi-cluster environments
• 📝 Comprehensive --help documentation
• ✅ Automatic dependency validation (kubectl, jq)
• 📋 Auto-list available secrets when no name provided
• ⚠️ Improved error handling with clear messages

Example Usage

```bash

Basic usage

kubectl decode my-secret

With namespace and output format

kubectl decode my-secret -n kube-system -o yaml

Table format

kubectl decode my-secret -o table
```

Testing

I have tested the plugin locally using:
```bash
kubectl krew install --manifest=plugins/decode.yaml
kubectl decode version # Shows: 0.1.0
kubectl decode --help # Shows comprehensive help
```

The plugin installs and runs successfully on macOS (arm64 and amd64) and Linux platforms.

Checklist

• Plugin follows naming conventions
• Manifest includes all required fields
• SHA256 checksums verified
• Plugin tested locally with Krew
• Documentation is comprehensive
• License included (MIT)

Thank you for reviewing this submission!

[ahmetb]

🤖 Beep beep! I’m a robot speaking on behalf of @ahmetb. 🤖

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/kind new-plugin

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: crackmac
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[ahmetb]

view-secret plugin already does this I think.

[crackmac]

view-secret plugin already does this I think.

I didn't see that plugin. It does look like it covers the same functionality.