Add Qwen 2.1 Image Edit Comfy graph (GGUF + TextEncode + int8 cache).

Co-authored-by: Cursor <cursoragent@cursor.com>

server/assets/studio2_qwen21_edit.json

@@ -0,0 +1,85 @@
+{
+  "4": {
+    "inputs": {
+      "unet_name": "qwen-image-2.1-Q8_0.gguf"
+    },
+    "class_type": "UnetLoaderGGUF",
+    "_meta": { "title": "Load Qwen 2.1 GGUF" }
+  },
+  "8": {
+    "inputs": {
+      "device": "auto",
+      "dtype": "int8",
+      "model": ["4", 0]
+    },
+    "class_type": "QwenImage21Cache",
+    "_meta": { "title": "Qwen 2.1 Cache" }
+  },
+  "5": {
+    "inputs": {
+      "clip_name": "qwen3vl_8b_int8_convrot.safetensors",
+      "type": "qwen_image",
+      "device": "default"
+    },
+    "class_type": "CLIPLoader",
+    "_meta": { "title": "Load Qwen 2.1 CLIP" }
+  },
+  "6": {
+    "inputs": {
+      "vae_name": "qwen_image_2.1_vae_bf16.safetensors"
+    },
+    "class_type": "VAELoader",
+    "_meta": { "title": "Load Qwen 2.1 VAE" }
+  },
+  "10": {
+    "inputs": {
+      "image": "qwen21_edit_source.png"
+    },
+    "class_type": "LoadImage",
+    "_meta": { "title": "image_1 source" }
+  },
+  "9": {
+    "inputs": {
+      "clip": ["5", 0],
+      "vae": ["6", 0],
+      "prompt": "",
+      "negative_prompt": "",
+      "resolution": 1024,
+      "images.image_1": ["10", 0]
+    },
+    "class_type": "TextEncodeQwenImage21",
+    "_meta": { "title": "Text Encode Qwen Image 2.1 Edit" }
+  },
+  "15": {
+    "inputs": {
+      "seed": 1,
+      "steps": 25,
+      "cfg": 1,
+      "sampler_name": "euler",
+      "scheduler": "simple",
+      "denoise": 1,
+      "model": ["8", 0],
+      "positive": ["9", 0],
+      "negative": ["9", 1],
+      "latent_image": ["9", 2]
+    },
+    "class_type": "KSampler",
+    "_meta": { "title": "KSampler" }
+  },
+  "20": {
+    "inputs": {
+      "samples": ["15", 0],
+      "vae": ["6", 0]
+    },
+    "class_type": "VAEDecode",
+    "_meta": { "title": "VAE Decode" }
+  },
+  "21": {
+    "inputs": {
+      "filename_prefix": "studio2-qwen21-edit",
+      "images": ["20", 0]
+    },
+    "class_type": "SaveImage",
+    "_meta": { "title": "Save Image" }
+  }
+}