Warm the npm cache for cross-model peers

Cross-model peers resolve acpx within tested version bounds, preserving npm's release-age and date-cutoff policies. Warming downloads an eligible transport and the adapters associated with the newest validated release. An older policy-selected transport may fetch different adapter packages on its first run.

Ask once, saying it downloads a supported acpx version and its adapters from the npm registry into the user's npm cache, and that npm runs any install scripts those packages declare, as a first peer run would. Run it only after the user approves; if they decline, fetch nothing.

On approval, run the health script with --warm-acpx in place of --version VERSION, using the same SKILL_DIR as Step 2:

SKILL_DIR="<absolute path of the directory containing the ce-setup SKILL.md>";
bash "$SKILL_DIR/scripts/check-health" --warm-acpx

It installs each package into npx's cache, without starting the package itself, and prints one line per package. Show those lines. A failed warm does not disable peers; their normal launch still attempts resolution under the same npm policy. Report the warm under Fixed when every package was cached, and under Skipped when the user declined or a fetch failed, naming the package.