Preferences wear the table's ink; hand-drawn becomes alternate

The native checkboxes clashed with the parchment: they are now
stamp-bordered boxes checked solid with a parchment tick, and their
labels rag left with the box instead of centering. The token-art
toggle's second option reads "alternate".

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015RCWSTnb1KYTPyL4GmhGnF

packages/web/src/App.svelte

@@ -1401,7 +1401,7 @@
           <button class="stamp tiny" class:lit={prefs.art === "photo"}
             onclick={() => setPref("art", "photo")}>cardboard</button>
           <button class="stamp tiny" class:lit={prefs.art === "drawn"}
-            onclick={() => setPref("art", "drawn")}>hand-drawn</button>
+            onclick={() => setPref("art", "drawn")}>alternate</button>
         </div>
         <label class="pref-row">
           <input type="checkbox" checked={prefs.autoGrab}
@@ -2836,11 +2836,40 @@
   .pref-row {
     display: flex;
     align-items: center;
-    gap: 0.5rem;
+    gap: 0.6rem;
     margin: 0.55rem 0;
     font-size: 0.85rem;
     color: #43331f;
+    text-align: left;
+    cursor: pointer;
   }
+  /* Checkboxes wear the table's own ink: a stamp-bordered box, checked
+     solid with a parchment tick — the native widget never matches the
+     parchment. */
+  .pref-row input[type="checkbox"] {
+    appearance: none;
+    flex: none;
+    width: 1.05rem;
+    height: 1.05rem;
+    border: 1.5px solid #43331f;
+    border-radius: 3px;
+    background: #f6efdd;
+    cursor: pointer;
+    display: grid;
+    place-content: center;
+    margin: 0;
+  }
+  .pref-row input[type="checkbox"]:checked {
+    background: #43331f;
+  }
+  .pref-row input[type="checkbox"]:checked::before {
+    content: "✓";
+    color: #f6efdd;
+    font-size: 0.8rem;
+    line-height: 1;
+    font-weight: 700;
+  }
+  .pref-row span { flex: 1; }
   .pref-note { font-size: 0.72rem; color: #8a7a5e; margin-top: 0.6rem; }
   .pref-name { max-width: 11rem; }
   .pref-swatch {