fix(display): enhance memory error detection for tool failures

- Implement logic to distinguish between "full" memory errors and actual failures in the `_detect_tool_failure` function.
- Add JSON parsing to identify specific error messages related to memory limits, improving error handling for memory-related tools.

agent/display.py

@@ -283,6 +283,15 @@ def _detect_tool_failure(tool_name: str, result: str | None) -> tuple[bool, str]
             pass
         return False, ""
 
+    # Memory-specific: distinguish "full" from real errors
+    if tool_name == "memory":
+        try:
+            data = json.loads(result)
+            if data.get("success") is False and "exceed the limit" in data.get("error", ""):
+                return True, " [full]"
+        except (json.JSONDecodeError, TypeError, AttributeError):
+            pass
+
     # Generic heuristic for non-terminal tools
     lower = result[:500].lower()
     if '"error"' in lower or '"failed"' in lower or result.startswith("Error"):