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/components/ComponentItem.vue

@@ -127,7 +127,7 @@
           </div>
           <NuxtLink
             v-if="component.product?.id"
-            :to="`/product/${component.product.id}/edit`"
+            :to="`/product/${component.product.id}`"
             class="btn btn-ghost btn-xs shrink-0"
           >
             Voir le produit