refactor(web/api): errCode + errMessage helpers; 41 sites migrated (W1)

web/src/routes/admin/quarantine/+page.svelte

@@ -9,7 +9,7 @@
     deleteQuarantineViaLidarr
   } from '$lib/api/admin';
   import { qk } from '$lib/api/queries';
-  import { copyForCode } from '$lib/api/error-copy';
+  import { errMessage } from '$lib/api/errors';
   import { playRadio } from '$lib/player/store.svelte';
   import type { AdminQuarantineRow, LidarrQuarantineReason } from '$lib/api/types';
 
@@ -89,8 +89,7 @@
       await resolveQuarantine(r.track_id);
       await invalidate();
     } catch (e) {
-      const code = (e as { code?: string }).code ?? 'unknown';
-      showToast(copyForCode(code));
+      showToast(errMessage(e));
     }
   }
 
@@ -108,8 +107,7 @@
       await deleteQuarantineFile(r.track_id);
       await invalidate();
     } catch (e) {
-      const code = (e as { code?: string }).code ?? 'unknown';
-      showToast(copyForCode(code));
+      showToast(errMessage(e));
     }
   }
 
@@ -135,12 +133,12 @@
       deleteLidarrError = null;
       await invalidate();
     } catch (e) {
-      const code = (e as { code?: string }).code ?? 'unknown';
+      const msg = errMessage(e);
       // Inline error keeps the modal open so the operator sees the failure
       // alongside the album they were about to remove.
-      deleteLidarrError = copyForCode(code);
+      deleteLidarrError = msg;
       // Also surface as toast so it's visible after dismissing the modal.
-      showToast(copyForCode(code));
+      showToast(msg);
     }
   }