feat(core): Add infinite loop protection to client (#2793)

packages/core/src/core/client.ts

@@ -219,7 +219,9 @@ export class GeminiClient {
     signal: AbortSignal,
     turns: number = this.MAX_TURNS,
   ): AsyncGenerator<ServerGeminiStreamEvent, Turn> {
-    if (!turns) {
+    // Ensure turns never exceeds MAX_TURNS to prevent infinite loops
+    const boundedTurns = Math.min(turns, this.MAX_TURNS);
+    if (!boundedTurns) {
       return new Turn(this.getChat());
     }
 
@@ -242,7 +244,7 @@ export class GeminiClient {
         const nextRequest = [{ text: 'Please continue.' }];
         // This recursive call's events will be yielded out, but the final
         // turn object will be from the top-level call.
-        yield* this.sendMessageStream(nextRequest, signal, turns - 1);
+        yield* this.sendMessageStream(nextRequest, signal, boundedTurns - 1);
       }
     }
     return turn;