Page type-check: noImplicitAny, every parameter and variable typed (#235)

290 places the type-check could not see into, mostly parameters, now typed with web/src/types.ts
(feeds, items, files, accounts, log lines, the directory's rows and items). Two changes run
differently in form only: the seek and volume inputs divide Number(value) where they divided
the string, and esc's table has a name. Null checks are #236.

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

web/src/events.ts

@@ -1,10 +1,10 @@
 /* ---------------- live events ---------------- */
-let sse;
+let sse: EventSource;
 /// The feed list and the open list, taken again from the server. The events keep both current,
 /// and one missed is a count wrong until a reload: reading an item sends none to your other
 /// pages, so one read on another device stayed unread here, and an iPhone stops the stream while
 /// the app is in the background, when everything is missed (#168).
-const catchUp=(()=>{ let t; return ()=>{ clearTimeout(t); t=setTimeout(()=>{
+const catchUp=(()=>{ let t: number; return ()=>{ clearTimeout(t); t=setTimeout(()=>{
   loadFeeds(true).catch(()=>{});
   if(S.feed) loadEntries().catch(()=>{});
 },300); }; })();
@@ -14,11 +14,11 @@ function connect(){
   sse=new EventSource('/api/events');
   // Back after a drop: whatever was sent meanwhile went to nobody.
   sse.onopen=()=>{ if(dropped){ dropped=false; catchUp(); } };
-  const soon=(fn,ms=500)=>{ let t; return ()=>{ clearTimeout(t); t=setTimeout(fn,ms); }; };
+  const soon=(fn: ()=>void,ms=500)=>{ let t: number; return ()=>{ clearTimeout(t); t=setTimeout(fn,ms); }; };
   // Caught: a network gone when one fires (a laptop asleep) was an unhandled rejection (#219).
   const refreshEntries=soon(()=>{ if(S.feed) loadEntries().catch(()=>{}); });
   // Every scan's events reach everyone; only this person's feeds are theirs to show or refresh.
-  const mine=id=>S.feeds.some(f=>f.id===id);
+  const mine=(id: string)=>S.feeds.some(f=>f.id===id);
   sse.onmessage=m=>{
     let ev; try{ ev=JSON.parse(m.data) }catch{ return }
     if(ev.ev==='progress'){