diff --git a/src/bus-publisher.ts b/src/bus-publisher.ts
index 588a9e3..1f6c203 100644
--- a/src/bus-publisher.ts
+++ b/src/bus-publisher.ts
@@ -53,10 +53,15 @@ export class BusPublisher {
       this.bus = null;
       if (!this.reconnecting) {
         this.reconnecting = true;
-        setTimeout(async () => {
-          this.reconnecting = false;
+        const reconnect = async (): Promise<void> => {
           await this.init({ onWarn: this.onWarn });
-        }, 5000);
+          if (!this.bus) {
+            setTimeout(reconnect, 5000);
+            return;
+          }
+          this.reconnecting = false;
+        };
+        setTimeout(reconnect, 5000);
       }
     }
   }
diff --git a/src/four-opencode-token-budget-guard.ts b/src/four-opencode-token-budget-guard.ts
index 9850b57..73c21fa 100644
--- a/src/four-opencode-token-budget-guard.ts
+++ b/src/four-opencode-token-budget-guard.ts
@@ -37,7 +37,14 @@ export const FourTokenBudgetGuardPlugin: Plugin = async (ctx) => {
           service: "tbg",
           level: "warn",
           message: msg,
-          extra: { details: args.map(a => typeof a === 'object' ? JSON.stringify(a) : String(a)).join(" ") }
+          extra: { details: args.map(a => {
+            if (typeof a !== 'object' || a === null) return String(a);
+            try {
+              return JSON.stringify(a);
+            } catch {
+              return "[unserializable]";
+            }
+          }).join(" ") }
         }
       }).catch(() => {});
     }