DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.
The permission decision system now supports a sandboxOverride reason type, allowing sandbox-level permission overrides to be distinguished from regular permission grants in the UI and telemetry.
Evidence
Sandbox override (search for "sandboxOverride")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.