* feat(macos): add Quick Chat power features
* docs(macos): document Quick Chat power features
* chore(i18n): refresh native locale artifacts for Quick Chat power features
* fix(macos): update DEBUG test helper sendProvider to the reasoning-threaded arity
* feat(clients): copy visible markdown, full-message reader for truncated messages, and independent reasoning/tool toggles
* chore(i18n): translate new reader and trace strings and regenerate catalogs
* test(ios): adopt reader display-options API in render smoke tests