feat(detail) : add consultation pages for piece, composant, product

Add read-only detail pages with edit/view toggle for piece, composant and
product, matching the existing machine detail pattern. Empty fields and
documents section are hidden in consultation mode. Catalogs and cross-links
updated to point to the new detail pages.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

app/composables/usePieceEdit.ts

@@ -467,6 +467,7 @@ export function usePieceEdit(pieceId: string) {
     handleFilesAdded,
     setProductSelection,
     submitEdition,
+    fetchPiece,
     formatPieceStructurePreview,
   }
 }