Extract images from PodSpec using Cue

[MPV]

I asked Cursor to:

Read the code here https://github.com/myitcvscratch/yamlpodspec and update this KIR repo to make use of CUE for parsing the PodSpec from any yaml string.

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Here's how Cursor summarized its changes:

Great! All tests are passing now. Let's summarize what we've done:

1. Added CUE support to the project by:
   • Adding CUE dependencies to go.mod
   • Creating a new cueparser package with a local PodSpec schema
   • Implementing CUE-based YAML parsing with validation
2. Updated the yamlparser package to:
   • Try CUE-based parsing first
   • Fall back to the original implementation if CUE parsing fails
   • Handle both single YAML documents and multi-document YAML files
3. Added comprehensive tests for:
   • Basic PodSpec validation
   • Container image extraction
   • Multi-document YAML processing

The implementation now uses CUE for parsing and validating PodSpecs, with several advantages:

1. Strong schema validation using CUE's type system
2. Graceful fallback to the original implementation if CUE validation fails
3. Support for both single and multi-document YAML files
4. Clear separation of concerns between parsing and validation