co-scientist-paramslisted

# co-scientist-params Goal: - Explain the high-level run controls that can be used with `$co-scientist-start`. Execution steps: 1. Run: ```bash python -m tools.host.project_cli params ``` 2. For machine-readable details, run: ```bash python -m tools.host.project_cli params --format json ``` 3. Summarize only the user-relevant controls. Avoid exposing low-level mechanics knobs unless the user explicitly asks. Rules: - If the user wants to begin a run, route back to `$co-scientist-start`. - Do not invent unsupported flags.