Resolve a plugin setting via the standard three-step fallback chain: plugin config → environment variable → fallback value.
Plugin API object.
Plugin identifier (e.g., 'jeeves-watcher-openclaw').
Config key within the plugin's config object.
Environment variable name.
Default value if neither source provides one.
The resolved setting value.
Resolve a plugin setting via the standard three-step fallback chain: plugin config → environment variable → fallback value.