fix: respect FORCE_COLOR env var over auto-detection

The FORCE_COLOR environment variable was being overridden by other
environment variables like COLORTERM, TERM, etc. This fix ensures
that when FORCE_COLOR is explicitly set, its value takes precedence
over automatic color support detection.

Fixes #624

source/vendor/supports-color/index.js

@@ -93,6 +93,12 @@ function _supportsColor(haveStream, {streamIsTTY, sniffFlags = true} = {}) {
 
 	const min = forceColor || 0;
 
+	// If forceColor was explicitly set (via FORCE_COLOR env or --color flag),
+	// respect it and don't override with auto-detection
+	if (forceColor !== undefined) {
+		return min;
+	}
+
 	if (env.TERM === 'dumb') {
 		return min;
 	}