resumed_status_command_emits_structured_json_when_requested was reading
the real ~/.claw/settings.json, causing loaded_config_files to be 1
instead of the expected 0 on machines with user config present.
Root cause: unlike other tests (e.g. resumed_config_command_loads_settings_files),
this test did not pass an isolated CLAW_CONFIG_HOME env var to run_claw,
so claw fell back to the real HOME and loaded the developer's settings file.
Fix: create a temp config-home dir and pass it as CLAW_CONFIG_HOME via
run_claw_with_env. This gives the assertion a clean 0-file baseline.
Unblocks PRs #2973, #2988, #2990 which all failed this same test on main.
Ref: ROADMAP #65
9b97c4d832