fix(web): AcoustID card's loading line names itself (M401 #3922)

Its bare "Loading…" made the Integrations page's cover-providers test find
two matches for /loading…/i (Vitest, run 8487). "Loading AcoustID
settings…" also says which card is loading.

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

web/src/lib/components/AcoustIDCard.svelte

@@ -162,7 +162,7 @@
       <button type="button" class="underline hover:no-underline" onclick={load}>Try again</button>
     </p>
   {:else if overview === null}
-    <p class="text-sm text-text-secondary">Loading…</p>
+    <p class="text-sm text-text-secondary">Loading AcoustID settings…</p>
   {:else}
     {#if overview.status.problem}
       <p class="text-sm text-action-destructive" data-testid="acoustid-problem">
@@ -312,7 +312,7 @@
             ).toLocaleString()})
           </summary>
           {#if unsettled === null}
-            <p class="mt-2 text-sm text-text-secondary">Loading…</p>
+            <p class="mt-2 text-sm text-text-secondary">Loading tracks…</p>
           {:else}
             <ul class="mt-2 divide-y divide-border text-sm" data-testid="acoustid-unsettled">
               {#each unsettled as t (t.track_id)}

web/src/routes/admin/integrations/integrations.test.ts

@@ -29,7 +29,8 @@ vi.mock('$lib/api/admin', () => ({
   createSMTPConfigQuery: vi.fn(),
   updateSMTPConfig: vi.fn(),
   testSMTPConfig: vi.fn(),
-  // AcoustIDCard loads on mount; a never-settling read leaves it on "Loading…".
+  // AcoustIDCard loads on mount; a never-settling read leaves it on its own
+  // "Loading AcoustID settings…", which the page's /loading…/i queries skip.
   getAcoustID: vi.fn(() => new Promise(() => {})),
   updateAcoustIDSettings: vi.fn(),
   runAcoustIDLookup: vi.fn(),