Make compute-text step lazily inserted only when needed

[Copilot]

The compute-text step was being generated for all workflows regardless of whether ${{ needs.task.outputs.text }} was actually used in the workflow content. This resulted in unnecessary GitHub Actions steps and action files being created.

Changes

• Detection Logic: Added detectTextOutputUsage() function that scans the markdown content for ${{ needs.task.outputs.text }} usage
• Conditional Generation: Modified buildTaskJob() to only include the compute-text step when the text output is actually needed
• Conditional Action Creation: Updated writeComputeTextAction() to only create the .github/actions/compute-text/action.yml file when required
• Tracking Field: Added NeedsTextOutput boolean field to WorkflowData struct to track usage across the compilation process

Behavior

Before: All workflows generated the compute-text step and action file:

- name: Compute current body text
  id: compute-text
  uses: ./.github/actions/compute-text

After: Only workflows using ${{ needs.task.outputs.text }} generate the compute-text step:

# This will NOT generate compute-text step
Generate a weekly report based on repository analysis.

# This WILL generate compute-text step  
Analyze this content: "${{ needs.task.outputs.text }}"

Validation

• Existing workflows (weekly-research.md, test-codex.md) now correctly skip compute-text generation since they don't use the text output
• Workflows that do use ${{ needs.task.outputs.text }} still correctly generate the compute-text step and action file
• Added comprehensive tests covering both scenarios and edge cases
• All existing tests continue to pass

This optimization reduces unnecessary GitHub Actions overhead for workflows that don't need contextual text processing.

Fixes #20.

Warning

Firewall rules blocked me from connecting to one or more addresses

I tried to connect to the following addresses, but was blocked by firewall rules:

• api.contoso.com
  • Triggering command: /tmp/go-build2408613569/b255/cli.test -test.testlogfile=/tmp/go-build2408613569/b255/testlog.txt -test.paniconexit0 -test.timeout=10m0s -test.v=true (dns block)
  • Triggering command: /tmp/go-build1412393288/b255/cli.test -test.testlogfile=/tmp/go-build1412393288/b255/testlog.txt -test.paniconexit0 -test.timeout=10m0s -test.v=true (dns block)
  • Triggering command: /tmp/go-build3186554237/b255/cli.test -test.testlogfile=/tmp/go-build3186554237/b255/testlog.txt -test.paniconexit0 -test.timeout=10m0s -test.v=true (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

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