fix

app/engine/world_builder.py

@@ -341,13 +341,26 @@ async def _run_tool_loop(
             "tokens": (resp.get("prompt_tokens") or 0) + (resp.get("completion_tokens") or 0),
         })
         msg = resp.get("message", {})
+        # Apply text replacements to content
+        content = msg.get("content", "") or ""
+        if content:
+            from app.core.settings_service import apply_text_replacements
+            content = await apply_text_replacements(db, content)
+            msg = dict(msg)
+            msg["content"] = content
         tool_calls = msg.get("tool_calls") or []
         if not tool_calls:
-            # No tool calls — append assistant message and ask again
+            # No tool calls — append assistant message and retry with a nudge.
+            # Up to 3 retries.
             messages.append({"role": "assistant", "content": msg.get("content", "")})
             messages.append({
                 "role": "user",
-                "content": f"You must call a tool. Available terminal tool: {terminal_tool}. If you are done with your work, call {terminal_tool} now.",
+                "content": (
+                    f"You did not call any tools in your previous response. "
+                    f"You MUST use the available tools to accomplish the task. "
+                    f"If you tried to call a tool but it didn't work, try again with proper JSON arguments. "
+                    f"When you are done, call {terminal_tool}."
+                ),
             })
             continue