who has this: a gap card says who holds it, the sheet and the open album name them, a Space grows a Holdings tab, and Get it is the hub's own grab or a wait for their presence

src/views/Library.svelte

@@ -19,7 +19,7 @@
     // is CatalogArtist's class for class with its animation numbers unchanged.
     // Styles are copied because Svelte scopes them per component — the same
     // trade CatalogDiscography made, with provenance comments at each block.
-    import { tick } from "svelte";
+    import { tick, untrack } from "svelte";
     import { fade } from "svelte/transition";
     import Icon from "../components/Icon.svelte";
     import PlaylistMenu from "../components/PlaylistMenu.svelte";
@@ -41,6 +41,7 @@
         importResume,
         goToView,
     } from "../lib/state.svelte.js";
+    import { openWhoHas, holdersFor, pairKey, holderCount } from "../lib/whoHas.svelte.js";
     import {
         fileRelease,
         CAT_ORDER,
@@ -121,6 +122,17 @@
         } catch { return {}; }
     })());
     let gapRows = $state({});           // foldKey(artist) -> catalog rows not owned
+    let gapNames = $state({});          // foldKey(artist) -> the artist's display name
+    // Who in your rooms holds a gap: asked for every open shelf's rows at
+    // once, filed by pairKey. A marked card opens the ask sheet.
+    let heldBy = $state({});
+    $effect(() => {
+        const items = Object.keys(gapOpen)
+            .filter((k) => gapOpen[k] && gapRows[k]?.length && gapNames[k])
+            .flatMap((k) => gapRows[k].map((r) => ({ artist: gapNames[k], album: r.title })));
+        if (!items.length) return;
+        untrack(() => void holdersFor(items).then((m) => { for (const [k, v] of m) heldBy[k] = v; }));
+    });
     let gapOpen = $state({});           // foldKey(artist) -> line expanded
     let gapLoading = $state({});
 
@@ -182,6 +194,7 @@
                     ...gapRows,
                     [key]: released.filter((r) => !ownedTitles.has(normKey(r.title))),
                 };
+                gapNames = { ...gapNames, [key]: artistName };
                 gapTotals = { ...gapTotals, [key]: { total: released.length } };
                 try { localStorage.setItem(GAPS_KEY, JSON.stringify(gapTotals)); } catch { /* ignore */ }
             } catch { /* the line stays collapsed; nothing is invented */ }
@@ -1544,7 +1557,7 @@
     </div>
 {/snippet}
 
-{#snippet gapCard(r)}
+{#snippet gapCard(r, artist)}
     <!-- A record you do NOT own, at full size and dimmed. It is filed by the
          same classifier as everything else, off the CatalogAlbum payload's own
          fields (`record_type`/`track_count`/`release_date`, plus the is_live and
@@ -1558,7 +1571,8 @@
         is_live: r.is_live,
         is_soundtrack: r.is_soundtrack,
     })}
-    <div class="release gap" role="listitem" title={`${r.title} — not in your library`}>
+    {@const held = heldBy[pairKey(artist, r.title)]}
+    <div class="release gap" class:held={!!held?.length} role="listitem" title={`${r.title} — not in your library`}>
         <div class="cover-wrap">
             {#if r.release_date?.slice(0, 4)}
                 <span class="ed-badge">{r.release_date.slice(0, 4)}</span>
@@ -1568,6 +1582,9 @@
             {:else}
                 <div class="cover placeholder"><Icon name="disc" size={30} /></div>
             {/if}
+            {#if held?.length}
+                <button class="have" title="{holderCount(held)} in your rooms {holderCount(held) === 1 ? "has" : "have"} this — who?" onclick={(e) => { e.stopPropagation(); openWhoHas({ artist, album: r.title, cover: r.cover ?? null }, e.currentTarget.closest(".release")); }}>{holderCount(held)} {holderCount(held) === 1 ? "has it" : "have it"}</button>
+            {/if}
         </div>
         <div class="title" title={r.title}>{r.title}</div>
         <div class="sub">{cat === "other" ? "" : CAT_ONE[cat]}</div>
@@ -1826,7 +1843,7 @@
             <div class="lib-gaps" role="list">
                 <div class="grid">
                     {#each missing as r (r.id)}
-                        {@render gapCard(r)}
+                        {@render gapCard(r, name)}
                     {/each}
                 </div>
             </div>
@@ -2942,6 +2959,10 @@
     .lib-gaps { margin-top: 12px; }
     .lib-gaps .release.gap { opacity: 0.44; transition: opacity 150ms ease; cursor: default; }
     .lib-gaps .release.gap:hover { opacity: 1; background: none; }
+    .lib-gaps .release.gap.held { opacity: 0.72; }
+    /* who in your rooms holds a release you lack — the count rides the card */
+    .have { position: absolute; right: 6px; bottom: 6px; z-index: 2; display: inline-flex; align-items: center; gap: 4px; height: 20px; padding: 0 7px; border-radius: 99px; background: rgba(0, 0, 0, 0.62); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); color: #fff; font-size: 10.5px; font-weight: 900; border: 1px solid rgba(255, 255, 255, 0.14); cursor: pointer; white-space: nowrap; }
+    .have:hover { background: rgba(0, 0, 0, 0.82); border-color: rgba(255, 255, 255, 0.34); }
 
     /* ============================================================ the table
        The power-user surface: every column is something the files carry. The