Agent bundle loop omits required adjacent handler tool #2578

Summary

The wp-site-generator Site Generation Loop fails before the first model call because Data Machine marks the required adjacent handler tool unavailable even though the agent bundle workflow wires github_issue_publish via the adjacent publish step and tool recorder.

Evidence

• Failing workflow: https://github.com/chubes4/wp-site-generator/actions/runs/27094708135
• Failed task: website-idea-agent
• Error reason: required_handler_tool_unavailable
• Error message: AI step requires adjacent handler tools that are not available to the model.
• Required/expected handler tool: github_issue_publish
• Downstream symptoms: no issue_number / issue_url outputs, then design/static tasks skip due missing output bindings.

Expected

When an AI step is paired with an adjacent publish/handler step in an ephemeral agent-bundle flow, the required handler tool should be available to the model and preserved through visibility/tool-policy filtering. The model should be able to call github_issue_publish exactly once and satisfy the configured recorder/output assertions.

Notes

This is not an importer/compiler failure. The run reached Homeboy agent-task execution after WP Codebox/Homeboy setup and failed during Data Machine AI step tool preparation.

AI assistance

• AI assistance: Yes
• Tool(s): OpenCode (GPT-5.5)
• Used for: Capturing the failing workflow evidence and drafting the runtime bug report.