feat(tui): scroll long names in every list and page through popups and chat

The sideways keys the results had (h/l, arrows, 0 and $) now scroll a
transfer's file name and a query too, each list on its own. The browse tree
and the room list take Home/End, PgUp/PgDn and the vim jumps like the main
lists, and a chat log, room or private, pages back through its history and
holds its place while new messages arrive; what arrives meanwhile counts as
unread until the reader returns to the end.

soulseek-rs/src/ui/main_tui/browse.rs

@@ -1,6 +1,7 @@
 use super::MainTui;
+use super::input::{jumped, list_jump};
 use crate::models::{BrowseStatus, files_under, find_node};
-use ratatui::crossterm::event::{KeyCode, KeyEvent};
+use ratatui::crossterm::event::{KeyCode, KeyEvent, KeyModifiers};
 use std::{thread, time::Duration};
 
 /// How long to wait for a browse response before showing a timeout notice.
@@ -12,6 +13,11 @@ impl MainTui {
             self.state.show_browse = false;
             return;
         }
+        let jump = list_jump(key, self.popup_page());
+        // Control combinations are only ever jumps: ctrl-d pages, d downloads.
+        if jump.is_none() && key.modifiers.contains(KeyModifiers::CONTROL) {
+            return;
+        }
 
         // Tab management: switch between browsed users or close the active tab.
         match key.code {
@@ -60,6 +66,14 @@ impl MainTui {
             (rows, sel, row)
         };
 
+        if let Some(jump) = jump {
+            if let Some(browse) = self.state.browse.active_tab_mut() {
+                browse.selected_row = jumped(sel, rows.len(), jump);
+            }
+            self.sync_browse_selection();
+            return;
+        }
+
         // Downloads need `&self.client` free of the browse borrow.
         match key.code {
             KeyCode::Enter if !row.is_folder => {