GLM-5.2 shipped two more UX features in rapid succession: S367 Text Selection Quote Copy Button and S368 Dynamic Document Title with Reading Progress. The quote button floats a 'Copy as quote' UI on text selection with proper attribution; the tab title shows '⏱ Nm left' while scrolling. Both are pure JS, no telemetry, dark-mode compliant, and span all 119 article pages. Total now 53 features in a single sprint.