[WIP] Debug Changeset Generator workflow failure

[Copilot]

Debug Changeset Generator Workflow Failure

Investigation Complete

The workflow failed with error: [ERROR] Invalid environment variable format: ANDROID_HOME (expected KEY=VALUE)

Root cause: The env_mirror.go code generates AWF arguments like --env "ANDROID_HOME=${ANDROID_HOME}", which relies on bash shell expansion. When a variable doesn't exist on the runner (like ANDROID_HOME), the shell expands ${ANDROID_HOME} to an empty string, resulting in --env ANDROID_HOME being passed to AWF, which expects KEY=VALUE format.

Implementation Plan

• Investigate workflow failure logs
• Identify root cause in env_mirror.go
• Fix env_mirror.go to generate correct shell conditional logic
• Update tests to verify the fix
• Rebuild and test locally
• Recompile workflows
• Run validation (make agent-finish)

Original prompt

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This section details on the original issue you should resolve

<issue_title>[agentics] Changeset Generator failed</issue_title>
<issue_description>### Workflow Failure

Workflow: Changeset Generator
Branch: HEAD
Run URL: https://github.com/githubnext/gh-aw/actions/runs/21407080898

Action Required

Debug this workflow failure using the agentic-workflows agent:

/agent agentic-workflows

When prompted, instruct the agent to debug this workflow failure.

Generated from Changeset Generator

• expires on Feb 3, 2026, 5:21 PM UTC

Comments on the Issue (you are @copilot in this section)

• Fixes [agentics] Changeset Generator failed #12056

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