fix HOTFIX remove cumulative args case

Author: RomneyDa

gui/src/util/toolCallState.ts

@@ -44,13 +44,11 @@ export function addToolCallDeltaToState(
     // If args is JSON parseable, it is complete, don't add to it
     JSON.parse(currentArgs);
   } catch (e) {
-    if (argsDelta.startsWith(currentArgs)) {
-      // Case where model progresssively streams args but full args each time e.g. "{"file": "file1"}" -> "{"file": "file1", "line": 1}"
-      mergedArgs = argsDelta;
-    } else if (!currentArgs.startsWith(argsDelta)) {
-      // Case where model streams in args in parts e.g. "{"file": "file1"" -> ", "line": 1}"
-      mergedArgs = currentArgs + argsDelta;
-    }
+    // Model streams in args in parts e.g. "{"file": "file1"" -> ", "line": 1}"
+    mergedArgs = currentArgs + argsDelta;
+
+    // Note, removed case where model progresssively streams args but full args each time e.g. "{"file": "file1"}" -> "{"file": "file1", "line": 1}"
+    // Because no apis do this and difficult to detect reliably
   }
 
   const [_, parsedArgs] = incrementalParseJson(mergedArgs || "{}");