Separate record groups with lines instead of greying repeated names

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

CHANGELOG.md

@@ -6,6 +6,13 @@ All notable changes to Jarl are documented here. The format follows
 
 ## [Unreleased]
 
+### Changed
+
+- Records table: names are no longer greyed out when they repeat the row
+  above (it made those records look inactive). Records of the same name
+  are separated by a faint line instead, and a full line marks where the
+  next name starts.
+
 ## [0.2.0] - 2026-10-09
 
 ### Added