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

web/src/routes/playlists/[id]/+page.svelte

@@ -16,7 +16,7 @@
   } from '$lib/api/playlists';
   import { qk } from '$lib/api/queries';
   import { user } from '$lib/auth/store.svelte';
-  import { copyForCode } from '$lib/api/error-copy';
+  import { errCode, errMessage } from '$lib/api/errors';
   import { playQueue } from '$lib/player/store.svelte';
   import type { TrackRef } from '$lib/api/types';
 
@@ -48,8 +48,7 @@
       await reorderPlaylist(id, cur);
       await queryClient.invalidateQueries({ queryKey: qk.playlist(id) });
     } catch (e: unknown) {
-      const code = (e as { code?: string })?.code ?? 'unknown';
-      alert(copyForCode(code));
+      alert(errMessage(e));
     }
   }
 
@@ -59,8 +58,7 @@
       await queryClient.invalidateQueries({ queryKey: qk.playlist(id) });
       await queryClient.invalidateQueries({ queryKey: qk.playlists() });
     } catch (e: unknown) {
-      const code = (e as { code?: string })?.code ?? 'unknown';
-      alert(copyForCode(code));
+      alert(errMessage(e));
     }
   }
 
@@ -120,8 +118,7 @@
       await queryClient.invalidateQueries({ queryKey: qk.playlists() });
       editing = false;
     } catch (e: unknown) {
-      const code = (e as { code?: string })?.code ?? 'unknown';
-      alert(copyForCode(code));
+      alert(errMessage(e));
     }
   }
 
@@ -132,8 +129,7 @@
       await queryClient.invalidateQueries({ queryKey: qk.playlists() });
       goto('/playlists');
     } catch (e: unknown) {
-      const code = (e as { code?: string })?.code ?? 'unknown';
-      alert(copyForCode(code));
+      alert(errMessage(e));
     }
   }
 
@@ -158,7 +154,7 @@
       await queryClient.invalidateQueries({ queryKey: qk.playlist(id) });
       await queryClient.invalidateQueries({ queryKey: qk.playlists() });
     } catch (e: unknown) {
-      showToast(`Refresh failed: ${(e as { code?: string })?.code ?? 'unknown'}`);
+      showToast(`Refresh failed: ${errCode(e)}`);
     } finally {
       refreshingDiscover = false;
     }