Detect timeline markers like "T+7d", "T+30d", "T+90d" and wrap them in styled timeline indicator spans with human-readable labels.
Replacements are applied only to text nodes to avoid corrupting attribute values.
Detect timeline markers like "T+7d", "T+30d", "T+90d" and wrap them in styled timeline indicator spans with human-readable labels.
Replacements are applied only to text nodes to avoid corrupting attribute values.