Fix Cursor MCP deeplinks: encode transport-only config so command is not empty.

scripts/cursor-deeplink.sh

@@ -13,7 +13,14 @@ python3 -c '
 import base64, json, sys, urllib.parse
 name, raw = sys.argv[1], sys.argv[2]
 transport = json.loads(raw)
-payload = {name: transport}
-b64 = base64.urlsafe_b64encode(json.dumps(payload, separators=(",", ":")).encode("utf-8")).decode("ascii").rstrip("=")
+# Unwrap { name: transport } if the caller passed it that way.
+if set(transport.keys()) == {name} and isinstance(transport[name], dict):
+    transport = transport[name]
+cmd = transport.get("command") or ""
+if len(cmd) >= 3 and cmd[1] == ":" and "\\" in cmd:
+    transport = dict(transport)
+    transport["command"] = cmd.replace("\\\\", "/").replace("\\", "/")
+# config = transport only; name= is a separate query param.
+b64 = base64.urlsafe_b64encode(json.dumps(transport, separators=(",", ":")).encode("utf-8")).decode("ascii").rstrip("=")
 print(f"cursor://anysphere.cursor-deeplink/mcp/install?name={urllib.parse.quote(name)}&config={b64}")
 ' "$name" "$config"