Add +/- quantity buttons to the Add Cards "Just added" list

Lets you quickly correct duplicate-copy counts right after adding a
card, instead of navigating to the Library tab.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

src/views/CardEntry.tsx

@@ -6,7 +6,9 @@ import { CardSearchBox } from "../components";
 export function CardEntry() {
   const [query, setQuery] = useState("");
   const [results, setResults] = useState<CardRef[]>([]);
-  const [recent, setRecent] = useState<{ name: string; qty: number; location: string }[]>([]);
+  const [recent, setRecent] = useState<
+    { oracleId: string; name: string; qty: number; location: string }[]
+  >([]);
   // Persisted so a "box" location sticks while entering a stack of cards.
   const [location, setLocation] = useState(() => localStorage.getItem("add-location") || "");
 
@@ -35,11 +37,18 @@ export function CardEntry() {
     const qty = await api.addOwned(card.oracle_id, 1);
     const loc = location.trim();
     if (loc) await api.setLocation(card.oracle_id, loc);
-    setRecent((r) => [{ name: card.name, qty, location: loc }, ...r].slice(0, 12));
+    setRecent((r) =>
+      [{ oracleId: card.oracle_id, name: card.name, qty, location: loc }, ...r].slice(0, 12),
+    );
     setQuery("");
     setResults([]);
   }
 
+  async function adjust(oracleId: string, delta: number) {
+    const qty = await api.addOwned(oracleId, delta);
+    setRecent((r) => r.map((e) => (e.oracleId === oracleId ? { ...e, qty } : e)));
+  }
+
   return (
     <div>
       <h2>Add Cards</h2>
@@ -72,7 +81,17 @@ export function CardEntry() {
                 <span className="card-name">{r.name}</span>
                 {r.location && <span className="deck-chip">{r.location}</span>}
                 <span className="spacer" />
+                <button
+                  onClick={() => adjust(r.oracleId, -1)}
+                  disabled={r.qty <= 0}
+                  title="Remove a copy"
+                >
+                  −
+                </button>
                 <span className="badge">owned ×{r.qty}</span>
+                <button onClick={() => adjust(r.oracleId, 1)} title="Add another copy">
+                  +
+                </button>
               </li>
             ))}
           </ul>