* feat: register open_timeline_dialog shortcut (mod+t) * feat: enhance TimelineDialog with full-text search across all roles * feat: add open_timeline_dialog shortcut labels to all locales * feat: wire TimelineDialog into ChatContainer * fix: add setTimelineDialogOpen to hook dependency array * fix: tighten timeline dialog interactions --------- Co-authored-by: Bohdan Triapitsyn <artmore@protonmail.com>