feat: add triggered output to action.yml

[DerekRoberts]

Summary

This PR adds a new output to the action.yml file that exposes the trigger status from the diff step, and includes comprehensive trigger behavior verification in the test workflow.

Changes

Action Output

• Added outputs section to action.yml
• Added triggered output that exposes steps.diff.outputs.triggered
• Enables downstream actions to conditionally run based on trigger status

Comprehensive Trigger Testing

• Added trigger verification step to each matrix job in tests.yml
• Tests three different trigger scenarios:
  • Backend job: triggers: ('backend/') - should NOT trigger (no backend/ changes)
  • Frontend-merge job: triggers: ('.') - should trigger (any change)
  • Frontend-pr job: no triggers - should trigger (always run)
• Provides clear success/failure feedback for each scenario
• Validates that the action's trigger logic is working correctly

Benefits

• Better workflow orchestration: Allows developers to create conditional workflows based on whether the action was triggered
• Comprehensive testing: Validates all trigger scenarios to ensure the action works as expected
• Clear feedback: Provides detailed success/failure messages for debugging
• Visibility: Makes trigger status visible for monitoring and debugging

Usage Example

- uses: ./
  id: test-and-analyse
  with:
    # ... other inputs
- name: Do something based on trigger status
  if: steps.test-and-analyse.outputs.triggered == 'true'
  run: echo "Action was triggered by path changes"

Testing

• Verified the output syntax is correct
• Confirmed the output references the correct step output
• Added comprehensive trigger behavior verification
• Tested commit and push to remote branch
• Validated all three trigger scenarios work as expected

Expected Test Results

When the workflow runs, you should see:

• ✅ Backend job correctly NOT triggered (no backend/ changes)
• ✅ Frontend-merge job correctly triggered (triggers: '.')
• ✅ Frontend-pr job correctly triggered (no triggers = always run)