ui: one way to open the events page, and stale wording after the pane's removal

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/ui_app.hpp

@@ -1945,6 +1945,12 @@ GdkTexture* scale_texture(GdkTexture* source, int width, int height);
 EventThumbCache* event_thumb_cache(App& app);
 GdkTexture* event_preview_texture(App& app, const std::string& path);
 void refresh_events_pane(App& app);
+/// Opens the `events` page. **Every route that opens that page must use this** and never `slideover_open()`
+/// directly: the page's list is rebuilt only while the page is open (see `record_event()`), and the
+/// slide-over has no on-open hook, so the list is refreshed here, once, before the page shows. The refresh
+/// is skipped when the page is already open -- it is current then, and a rebuild would drop the
+/// Compare/Accumulate selection and the scroll position. Returns what `slideover_open()` returns.
+bool open_events_page(App& app);
 /// Re-marks which row is the event currently on screen, **without rebuilding the list**.
 ///
 /// The mark is the only thing about a row that a replay changes -- the picture and the numbers