support SVG upload, fix group www-data sur data/

data/46f2f084-8dd8-497a-aef0-4728367ce753/meta.json

@@ -4,10 +4,27 @@
     "title": "Convertir des images en ligne de commande sous Linux",
     "author": "cedric@abonnel.fr",
     "published": true,
-    "published_at": "2025-12-28 14:54:41",
+    "published_at": "2025-12-28 14:54",
     "created_at": "2025-12-28 14:54:41",
-    "updated_at": "2025-12-28 14:54:41",
-    "revisions": [],
-    "cover": "cover.jpg",
+    "updated_at": "2026-05-12 00:51:02",
+    "revisions": [
+        {
+            "n": 1,
+            "date": "2026-05-12 00:51:02",
+            "comment": "",
+            "title": "Convertir des images en ligne de commande sous Linux"
+        }
+    ],
+    "cover": "cover.svg",
+    "files_meta": {
+        "illustration_conversion_images_cli_linux.svg": {
+            "author": "",
+            "source_url": ""
+        }
+    },
+    "external_links": [],
+    "seo_title": "",
+    "seo_description": "",
+    "og_image": "",
     "category": "linux"
 }