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 /doctor output now detects when tmux focus-events is off and shows a suggestion: "add 'set -g focus-events on' to ~/.tmux.conf and reattach for focus tracking."
Evidence
Tmux diagnostic (search for "tmux focus-events off")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.