Search Currently Listening from the search box (#127)

Currently Listening's search box said "Search items…" and did nothing: loadEntries returns early
for a place with its own list. Typing now redraws the list with the search sent along, as
/api/entries already takes one, title and text, and says so when nothing in progress matches.
The keys list says / searches it too.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

web/src/player.ts

@@ -179,7 +179,7 @@ function keysModal(){
     [g('a'),'All Subscriptions'],[g('d'),'Directory'],
     [g('l'),'Currently Listening'],[g('s'),'Settings'],
     [k('Shift')+' '+k('J'),'Next feed'],[k('Shift')+' '+k('K'),'Previous feed'],
-    [k('/'),'Search items, or the Directory'],[k('r'),'Refresh'],[k('['),'Show or hide the feed list'],
+    [k('/'),'Search items, Currently Listening or the Directory'],[k('r'),'Refresh'],[k('['),'Show or hide the feed list'],
     ['Items'],
     [k('j')+' or '+k('n'),'Next item'],[k('k')+' or '+k('p'),'Previous item'],
     [k('Shift')+' '+k('A'),'Mark all read'],