feat: add checkpoint hash filtering and navigation

- Add checkpoint hash parameter parsing to backend routes
- Implement checkpoint hash filtering in frontend API client
- Add click navigation from recipe modal to checkpoints page
- Update checkpoint items to use pointer cursor for better UX

Checkpoint items in recipe modal are now clickable and will navigate to the checkpoints page with appropriate hash filtering applied. This improves user workflow when wanting to view checkpoint details from recipes.

locales/fr.json

@@ -528,6 +528,9 @@
     },
     "recipes": {
         "title": "LoRA Recipes",
+        "actions": {
+            "sendCheckpoint": "Envoyer vers ComfyUI"
+        },
         "controls": {
             "import": {
                 "action": "Importer",
@@ -1254,6 +1257,9 @@
             "cannotSend": "Impossible d'envoyer la recipe : ID de recipe manquant",
             "sendFailed": "Échec de l'envoi de la recipe vers le workflow",
             "sendError": "Erreur lors de l'envoi de la recipe vers le workflow",
+            "missingCheckpointPath": "Chemin du checkpoint indisponible",
+            "missingCheckpointInfo": "Informations sur le checkpoint manquantes",
+            "downloadCheckpointFailed": "Échec du téléchargement du checkpoint : {message}",
             "cannotDelete": "Impossible de supprimer la recipe : ID de recipe manquant",
             "deleteConfirmationError": "Erreur lors de l'affichage de la confirmation de suppression",
             "deletedSuccessfully": "Recipe supprimée avec succès",