Constructs a string containing an HTML <span> element with inline CSS to
render a status indicator badge.
Details
This is a helper function that translates a status string ("pass", "warn",
or "fail") into a formatted HTML element. The function's primary logic is
string interpolation via the glue package.
The visual appearance of the <span> is defined entirely by inline CSS and
includes properties for font size, padding, background color, border, text
color, and spacing.