feat(server): add recipe-based model management (#2176)

examples/server/recipes/hidream-o1-dev.json

@@ -0,0 +1,24 @@
+{
+  "schema_version": 1,
+  "id": "hidream-o1-dev",
+  "name": "HiDream O1 Image dev",
+  "description": "Bundled checkpoint; also supports reference-image editing.",
+  "model_url": "https://huggingface.co/HiDream-ai/HiDream-O1-Image-Dev",
+  "slots": [
+    {
+      "id": "model",
+      "required": true
+    }
+  ],
+  "defaults": {
+    "cfg_scale": 1,
+    "steps": 20,
+    "width": 2048,
+    "height": 2048,
+    "sampling_method": "euler"
+  },
+  "features": [
+    "flow_shift",
+    "ref_images"
+  ]
+}