Derive --dsh-content-font-size-secondary (setting -1 at <=14, setting -2
above; 13px at the default) with --dsh-content-font-delta-secondary in
gradient-shadow-text.css, and move every one-step-under-the-body text
onto it: think text and reasoning summaries, the shared DisclosureRow
title, ToolRow and bash-row summaries and file links, compaction/
context/command/retry/error rows, StatsLine, the workflow-run panel
tiers, reference summaries, the turn-status clock, and the feedback
note trigger. The markdown table variants join the same tier instead of
staying fixed; its 13px floor keeps them legible at the 12px setting.
At the default setting the flow-row titles and summaries render at 13px
(previously 14px) so they match think text at every setting instead of
sitting 2px above it.
a77e23a975