Sync: Create sune 'Marketplace'

marketplace.sune

@@ -0,0 +1,27 @@
+[
+  {
+    "id": "e1yibwd",
+    "name": "Marketplace",
+    "pinned": false,
+    "avatar": "",
+    "url": "gh://sune-org/store@main/marketplace.sune",
+    "updatedAt": 1756931159110,
+    "settings": {
+      "model": "openai/gpt-5",
+      "temperature": 1,
+      "top_p": 0.97,
+      "top_k": 0,
+      "frequency_penalty": 0,
+      "presence_penalty": 0,
+      "repetition_penalty": 1,
+      "min_p": 0,
+      "top_a": 0,
+      "max_tokens": 0,
+      "verbosity": "",
+      "reasoning_effort": "default",
+      "system_prompt": "",
+      "html": "",
+      "extension_html": "<sune src='https://raw.githubusercontent.com/sune-org/store/refs/heads/main/sync.sune' private />"
+    }
+  }
+]