Run the experiment funnel

Running requires an approved plan — the engine refuses unapproved runs. If approval is missing, go back to the researchforge-plan skill; never look for a way around the gate.

researchforge experiment run <plan-id> --json

What the engine does (so you can narrate it honestly):

• each attempt runs in its own detached git worktree with the contract's resource limits; the user's checkout is never touched;
• a screening baseline is measured with the screening command first, so screening results are compared like-for-like;
• experiments run one at a time: screening → survivors go to the full benchmark;
• failures and constraint violations are recorded, not retried silently.

This can take a while (the plan's approval showed worst-case wall time). experiment run auto-starts a background live monitor when available and prints Live monitor: <url> — always relay that URL to the user so they can watch stages complete in real time while you narrate results in chat (researchforge serve --status re-prints it; the monitor needs pip install "researchforge[serve]"). If the process is interrupted or times out:

researchforge experiment resume <run-id> --json

If the user does not want to continue an interrupted run, discard it so a fresh batch starts clean (ask them first — this cancels unfinished experiments, though finished results are kept):

researchforge experiment abandon <run-id>

When the run finishes, report per-experiment outcomes from the JSON — status, stage reached, and measured metrics. Screening numbers are screening numbers: never present them as full-benchmark or validated results. Then continue with the researchforge-results skill.

Rules

• The Python engine is the boundary: never work around a validation error, a protected path, or an approval gate — fix the artifact or ask the user.
• Approvals belong to the user: never pass --yes or type a confirmation unless the user explicitly approved that step in this conversation.
• Ground every summary in stored data: quote only numbers returned by --json output or files under .researchforge/ — never invent metrics.