Every line of the edition details popup was parsed as a label and a value,
so a line carrying no colon had one appended to it. A multi-line overview
therefore rendered with a spurious colon at the end of each continuation
line, and Goodreads sourced descriptions, which use CRLF, turned their
blank lines into a lone colon.
Split each line on the first colon only, leave a line without one
unlabelled, and trim the trailing carriage return so a CRLF blank line
renders as a real paragraph break.
Building the line is now a named function so its branches can be asserted
directly. Rendered text discards the carriage return, so a snapshot alone
cannot tell the trimming apart from leaving it in place.
A continuation line that happens to contain a colon is still styled as a
label. Telling those apart needs the details to be built as styled lines
rather than flattened to text and parsed back.
Draw the edition details popup over the book details view. The popup body is
the scrollable text the book details handler builds from the already loaded
edition row, so it needs no tabs and no network call.
The text styling is extracted into a named function so both branches are unit
tested, and the shared test fixture now holds the real field lines instead of a
placeholder, which exercises the scroll offset and the values that themselves
contain a colon.
Dark-Alex-17