feat: import with verification, and a Wanted view of its own (M502 #5522)

A finished download is checked against MusicBrainz before anything is
filed: the files are paired with an edition's tracks by position or path,
and AcoustID, tag ids, lengths and titles say whether it is the album.
What is the album is copied into the library as
Artist/Album (Year)/Artist - Album - NN - Title, tagged with Picard's
MusicBrainz ids, and scanned; the download keeps seeding. What is not is
refused: set aside, removed from the client, and the album searched for
again. A download the check cannot settle waits for a person, who imports
it anyway or refuses it. Tracks the library already holds are skipped.

The wanted list leaves Admin for a top-level Wanted view, admin-only and
web-only, with tabs for Wanted, Activity (downloads and their imports,
the ones needing a person first), Missing files, Held, Following (with the
release-type profiles, moved off Integrations) and Blocked. The search
settings gain "File new music into" when the library has several folders.

The search pass logs why each failed search failed.

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

web/src/lib/components/SearchSettingsCard.svelte

@@ -10,13 +10,14 @@
   // Searching and grabbing (M502 #5521): how often each want is searched
   // for, whether the best release is taken without asking, and which
   // qualities are taken at all. The schedule wakes every ten minutes and
-  // keeps to each indexer's searches-per-hour.
+  // keeps to each indexer's searches-per-hour. A finished download is
+  // checked and filed into one of the library's folders (#5522).
 
   const client = useQueryClient();
   const store = createSearchSettingsQuery();
   const query = $derived($store);
 
-  type Form = { auto_grab: boolean; search_interval_hours: number; allowed: string[] };
+  type Form = { auto_grab: boolean; search_interval_hours: number; allowed: string[]; import_root: string };
 
   // The form is the server's settings until edited; saved holds what a save
   // returned until the query catches up.
@@ -27,7 +28,12 @@
   const form = $derived<Form | null>(edited ?? (base ? fromSettings(base) : null));
 
   function fromSettings(s: SearchSettings): Form {
-    return { auto_grab: s.auto_grab, search_interval_hours: s.search_interval_hours, allowed: [...s.allowed_qualities] };
+    return {
+      auto_grab: s.auto_grab,
+      search_interval_hours: s.search_interval_hours,
+      allowed: [...s.allowed_qualities],
+      import_root: s.import_root
+    };
   }
 
   const dirty = $derived(!!edited && !!base && JSON.stringify(edited) !== JSON.stringify(fromSettings(base)));
@@ -48,7 +54,8 @@
       saved = await putSearchSettings({
         auto_grab: form.auto_grab,
         search_interval_hours: Number(form.search_interval_hours),
-        allowed_qualities: form.allowed
+        allowed_qualities: form.allowed,
+        import_root: form.import_root
       });
       edited = null;
       await client.invalidateQueries({ queryKey: qk.searchSettings() });
@@ -81,7 +88,7 @@
     <h3 class="font-display text-lg font-medium text-text-primary">Searching and grabbing</h3>
     <p class="mt-1 text-sm text-text-secondary">
       Minstrel searches your indexers for each album on the
-      <a href="/admin/wanted" class="text-accent-fg hover:underline">wanted list</a>, judges every
+      <a href="/wanted" class="text-accent-fg hover:underline">wanted list</a>, judges every
       release it finds, and hands the best one to your download client. Each album's releases and
       the reason for every verdict are on the Wanted page.
     </p>
@@ -146,6 +153,32 @@
       </div>
     </fieldset>
 
+    {#if query.data.scan_paths.length > 1}
+      <label class="block">
+        <span class="text-sm text-text-primary">File new music into</span>
+        <span class="block text-xs text-text-secondary">
+          A download that checks out is copied here as Artist/Album (Year)/Artist - Album - NN -
+          Title, tagged with its MusicBrainz ids. The download itself keeps seeding.
+        </span>
+        <select
+          value={form.import_root || query.data.scan_paths[0]}
+          onchange={(e) => edit({ import_root: e.currentTarget.value })}
+          class="mt-1 rounded border border-border bg-background px-2 py-1 text-sm text-text-primary
+                 focus-visible:outline-solid focus-visible:outline-2 focus-visible:outline-accent"
+        >
+          {#each query.data.scan_paths as p (p)}
+            <option value={p}>{p}</option>
+          {/each}
+        </select>
+      </label>
+    {:else if query.data.scan_paths.length === 1}
+      <p class="text-xs text-text-secondary">
+        A download that checks out is copied into <span class="font-mono">{query.data.scan_paths[0]}</span>
+        as Artist/Album (Year)/Artist - Album - NN - Title, tagged with its MusicBrainz ids. The
+        download itself keeps seeding.
+      </p>
+    {/if}
+
     <p class="text-xs text-text-secondary" data-testid="last-pass">{lastPass(query.data)}</p>
 
     <div class="flex justify-end">