Generate tool test scenarios

Author ≥N DISTINCT scenarios per tool (maximize diversity) for a tooltuner target round.

Multi-phase tooltuner-gen orchestration with structured phase control and receipts.

• · targetDir (path)
• · roundDir (path)
• · tools (string array)
• · n (count)
• · domainHint (string)

• · results array (structured JSON)

• · Claude agent (sub-LLM orchestration)
• · Workflow parallel execution

• · Output directories exist or are creatable
• · Python 3 runtime required

• · Sub-process error or exit code != 0

• · Multi-phase orchestration with explicit flow names
• · Explicit parallelization with concurrency guard
• · Explicit dependency declaration