refactor: update failure message handling in display module and add debug logging in code execution tool

- Modified the `_wrap` function to append a failure suffix without applying red coloring, simplifying the failure message format.
- Introduced temporary debug logging in the `execute_code` function to track enabled and sandbox tools, aiding in troubleshooting.

tools/code_execution_tool.py

@@ -342,6 +342,10 @@ def execute_code(
     session_tools = set(enabled_tools) if enabled_tools else set()
     sandbox_tools = frozenset(SANDBOX_ALLOWED_TOOLS & session_tools)
 
+    # Temporary debug — remove after investigating
+    with open("/tmp/hermes_exec_debug.log", "a") as _dbg:
+        _dbg.write(f"enabled_tools={enabled_tools}\nsandbox_tools={sandbox_tools}\n---\n")
+
     if not sandbox_tools:
         sandbox_tools = SANDBOX_ALLOWED_TOOLS