joao-paulo-santos/dsh-approval-diff

In-chat approval review: when the model asks to change a file, a composer takeover replaces the native approval card with a true diff review. Line diffs with word-level highlights, disk-sourced context with line numbers, one-sided green creates, red deletion reviews. One file per card (consecutive same-file calls merge into one diff with two file-scoped buttons); everything that is not a file-changing approval falls through to the native card.