Page type-check: strict's flags that cost nothing, and catch variables as unknown (#235)

why(e) gives a caught error's message; each catch read e.message as any.

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

web/src/feedpage.ts

@@ -170,7 +170,7 @@ async function feedAction(a,f){
     try{
       await api(`/api/feeds/${encodeURIComponent(f.id)}`,{method:'PATCH',body:JSON.stringify({pinned:!f.pinned})});
       await loadFeeds(true); renderFeed();
-    }catch(e){ toast(e.message,true); }
+    }catch(e){ toast(why(e),true); }
   }
   if(a==='settings') settingsModal(f);
   if(a==='share') share(f.title||f.id, f.url, $('#content .acts [data-a="share"]'));
@@ -187,7 +187,7 @@ async function allAction(a){
     try{
       const r=await api('/api/read-all',{method:'POST'});
       toast(`Marked ${r.marked} read`); await loadFeeds(true); renderFeed(); loadEntries();
-    }catch(e){ toast(e.message,true); }
+    }catch(e){ toast(why(e),true); }
   }
 }