Lissom Impl

Inputs

• task_dir = "$0"
• impl_delegation = "single" | "multiple" (default: "single")

Process

• If impl_delegation == "multiple"
  • Enumerate Step-*.md and Fix-*.md files in <task_dir>/ in numeric order. For each file not already in <task_dir>/Impl-record.json with a sha, use Tool Agent to spawn lissom-implementer with task_dir and step_file (the filename with extension).
  • Read Step-dependency-graph.md or Fix-dependency-graph-<N>.md to find out parallel execution opportunities.
• If impl_delegation == "single"
  • Spawn a single lissom-implementer agent with task_dir and let it execute all steps sequentially.

Per step process

1. If the agent reports FAILED, report immediately.
2. Verify the step entry exists in <task_dir>/Impl-record.json.
3. If the record is missing, re-invoke lissom-implementer once more with the same step. If still missing after retry, report with the agent's last response.

Completion

Write <task_dir>/Impl-summary.md containing:

• Steps completed with commit SHAs from <task_dir>/Impl-record.json
• Any deviations from the plan
• Any issues met during the implementation.