feat(api-detail): bouton Voir doc en accès direct + assets seeder yaml

- Déplace "Voir la documentation" hors du dropdown Actions
  en bouton principal à gauche du menu (désactivé si status ≠ GENERATED)
- nest-cli.json : copie automatique des assets YAML du seeder
  (src/modules/seeder/assets/**/*.yaml → dist, watchAssets: true)

Generated with [Claude Code](https://claude.ai/code)
via [Happy](https://happy.engineering)

Co-Authored-By: Claude <noreply@anthropic.com>
Co-Authored-By: Happy <yesreply@happy.engineering>

back/nest-cli.json

@@ -3,7 +3,13 @@
   "collection": "@nestjs/schematics",
   "sourceRoot": "src",
   "compilerOptions": {
-    "deleteOutDir": true
+    "deleteOutDir": true,
+    "assets": [
+      {
+        "include": "modules/seeder/assets/**/*.yaml",
+        "watchAssets": true
+      }
+    ]
   },
   "entryFile": "back/src/main"
 }