Index GitHub Actions uses across workflows in USES.md

[Copilot]

Adds automatic indexing of GitHub Actions uses statements across all workflow files. Generates a USES.md in the db folder that aggregates action usage by name and version, enabling version consistency tracking and coordinated updates across the organization.

Changes

Data Structures

• ActionUse: Captures action name, version (with inline comments), and source workflow
• ActionUsesIndex: Aggregates uses by action → version → workflow references
• WorkflowReference: Links to specific workflow files using each version

Parsing

• extractActionUses(): Parses workflow YAML to extract all uses statements from steps
• parseUsesString(): Extracts action name and version, preserving inline comments (e.g., de0fac2e...83dd # v6.0.2)

Generation

• generateUSESMarkdown(): Creates USES.md with:
  • Actions sorted alphabetically
  • Version variants with usage counts
  • Collapsible sections listing workflow files (minimizes noise)
  • Direct GitHub links to each workflow

Integration

• Hooks into auditGitHubActions() to collect uses during workflow processing
• Generates USES.md alongside existing index files
• Archived repositories are skipped during scanning to avoid processing inactive repositories

Code Organization

• All tests consolidated into single main_test.go file with organized sections for better maintainability

Example Output

## actions/checkout

**Total Usage**: 4 workflow file(s) across 3 version(s)

### Version: `de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2`

**Usage Count**: 1

<details>
<summary>Show 1 workflow file(s) using this version</summary>

- [dotgithubindexer: .github/workflows/build-go.yml](https://github.com/org/repo/blob/main/.github/workflows/build-go.yml)

</details>

See USES_EXAMPLE.md for full sample output.

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💬 We'd love your input! Share your thoughts on Copilot coding agent in our 2 minute survey.

[JaredHatfield]

@copilot

Combine the Go code into a single file for main.go

Additionally when scanning all of the repositories make sure you skip archived repositories.

[Copilot]

@copilot

Combine the Go code into a single file for main.go
...

Done. All test files have been consolidated into main_test.go with organized sections, and archived repositories are now skipped during scanning (see commit 571e2f7).

[codecov]

Codecov Report

❌ Patch coverage is 0% with 121 lines in your changes missing coverage. Please review.
✅ Project coverage is 0.00%. Comparing base (fc88ea5) to head (60571c0).
⚠️ Report is 12 commits behind head on main.

Files with missing lines	Patch %	Lines
main.go	0.00%	121 Missing ⚠️

Additional details and impacted files

@@          Coverage Diff           @@
##            main     #49    +/-   ##
======================================
  Coverage   0.00%   0.00%            
======================================
  Files          1       1            
  Lines        628     749   +121     
======================================
- Misses       628     749   +121     

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