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.
When a hook rewrites the user's input, permissions are now re-validated against the modified input. This prevents hooks from bypassing permission checks by rewriting a denied command into something different.
Evidence
Permission re-validation (search for "ask rule on hook-rewritten input")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.