Fix imports frontmatter to include markdown content in lock files

[Copilot]

✅ COMPLETE: Make imports frontmatter include markdown content in lock file

Problem

The imports: field in workflow frontmatter was only extracting tools and engines from imported files, but was not extracting and prepending the markdown content to the workflow. This meant important instructions, guidelines, or context from imported files were being lost.

Solution

Modified the import processing pipeline to extract markdown content from imported files and prepend it to the main workflow content, matching the expected behavior where imports work like @include directives for both frontmatter and markdown.

Implementation Details

Modified Files:

1. pkg/parser/frontmatter.go

   • Added ImportsResult struct to hold return values (tools, engines, markdown, imported files)
   • Changed ProcessImportsFromFrontmatterWithManifest to return *ImportsResult instead of multiple values
   • Updated wrapper function to use struct fields

2. pkg/workflow/compiler.go

   • Updated to use ImportsResult struct
   • Accesses struct fields: MergedTools, MergedEngines, MergedMarkdown, ImportedFiles

3. pkg/workflow/imports_markdown_test.go (new file)

   • Comprehensive test coverage for single/multiple imports
   • Tests imports + @includes combination

Code Quality Improvements

• ✅ Refactored to use struct type for clearer API
• ✅ All tests pass (190+ tests)
• ✅ Code formatted with go fmt
• ✅ No breaking changes

Behavior

The imports field now provides complete component import:

• ✅ Frontmatter (tools, engines) extracted and merged
• ✅ Markdown content extracted and prepended in order
• ✅ Imported files tracked in manifest comments
• ✅ Compatible with @include directives
• ✅ All tools from imports merged correctly

Original prompt

Make sure "imports" (from frontmatter) are imported in the lock file. Their frontmatter should be imported like @include and the markdown should be prepended.

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