[WIP] Upgrade version number in setup-cli step

[Copilot]

Plan: Add version upgrade functionality for actions/setup-cli

Problem Statement

The upgrade command should inspect existing copilot-setup-steps.yml file and upgrade the version number in any actions/setup-cli step.

Changes Completed

• Investigate codebase and understand current behavior
• Add version upgrade logic to copilot_setup.go
  • Created upgradeCopilotSetupSteps() function
  • Created upgradeSetupCliVersion() helper function
  • Refactored ensureCopilotSetupSteps() to support upgrade mode
• Update upgrade command to call the new upgrade function
  • Added call to upgradeCopilotSetupSteps() in updateAgentFiles()
  • Added necessary imports (workflow package)
• Add comprehensive tests for version upgrade scenario
  • TestUpgradeCopilotSetupSteps - upgrades v1.0.0 to v2.0.0
  • TestUpgradeCopilotSetupSteps_NoFile - creates file when missing
  • TestUpgradeCopilotSetupSteps_DevMode - skips dev mode files
  • TestUpgradeSetupCliVersion - tests helper function
• Verify integration with upgrade command flow
• Run tests and validate changes
  • All new tests pass ✅
  • All existing copilot_setup tests pass ✅
  • Upgrade command tests pass ✅
• Manual testing
  • Release mode upgrade: v0.30.0 → current version ✅
  • Dev mode (curl): No changes (as expected) ✅
  • Workflow structure preserved ✅

Implementation Details

• When upgrade command runs, it now upgrades versions in existing copilot-setup-steps.yml
• Only upgrades actions/setup-cli steps in release mode
• Dev mode (curl-based install) is not upgraded
• Preserves existing workflow structure and other steps
• Non-critical failure (warning) if upgrade fails

Manual Test Results

Test 1: Release mode upgrade

• Before: uses: githubnext/gh-aw/actions/setup-cli@v0.30.0
• After: uses: githubnext/gh-aw/actions/setup-cli@5b98ed1-dirty
• Other steps preserved: ✅
• Result: SUCCESS ✅

Test 2: Dev mode (curl-based)

• Before: curl install script
• After: No changes
• Result: SUCCESS (correctly skipped) ✅

Original prompt

The "upgrade" command should inspect existing copilot-setup-setup .yl file and upgrad the version number in any actions/setup-cli step

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[pelikhan]

@copilot you also need to update the "version" field value