fix

app.py

@@ -274,29 +274,55 @@ app_theme = {
 def format_tool_log(tool_name, reason, meta, output, style="A"):
     backend = meta.get("backend") if meta else "unknown"
     duration = meta.get("duration") if meta else None
+
+    # ---------------------------
+    # Style A: Simple
+    # ---------------------------
     if style == "A":
-        # Simple
         return f"[{tool_name}] {backend} -> {str(output)[:200]}"
+
+    # ---------------------------
+    # Style B: Detailed Human-Readable
+    # ---------------------------
     if style == "B":
-        # Detailed human-readable
-        lines = [f"🔧 Tool: {tool_name}", f"🎯 Why: {reason}", f"⚙️ Backend: {backend}"]
+        lines = [
+            f"🔧 Tool: {tool_name}",
+            f"🎯 Why: {reason}",
+            f"⚙️ Backend: {backend}",
+        ]
         if duration is not None:
-            lines.append(f"⏱ Duration: {duration:.2f}s")
+            try:
+                lines.append(f"⏱ Duration: {float(duration):.2f}s")
+            except:
+                lines.append(f"⏱ Duration: {duration}")
+
         lines.append(f"📝 Output: {str(output)}")
-        return "
-".join(lines)
+        return "\n".join(lines)
+
+    # ---------------------------
+    # Style C: Ultra-visual
+    # ---------------------------
     if style == "C":
-        # Ultra-visual
-        s = f"🔧 {tool_name} • Reason: {reason} • Backend: {backend}"
+        parts = [
+            f"🔧 {tool_name}",
+            f"• Reason: {reason}",
+            f"• Backend: {backend}",
+        ]
         if duration is not None:
-            s += f" • {duration:.2f}s"
-        s += f"
-→ {str(output)}"
-        return s
-    # D -> both
+            try:
+                parts.append(f"• {float(duration):.2f}s")
+            except:
+                parts.append(f"• {duration}")
+
+        visual = " ".join(parts) + "\n" + f"→ {str(output)}"
+        return visual
+
+    # ---------------------------
+    # Style D: Both Simple + Detailed
+    # ---------------------------
     return {
         "simple": f"[{tool_name}] {backend} -> {str(output)[:200]}",
-        "detailed": format_tool_log(tool_name, reason, meta, output, style="B")
+        "detailed": format_tool_log(tool_name, reason, meta, output, style="B"),
     }
 
 with gr.Blocks(css=".gradio-container {background:#f7fafc}") as demo: