Rebuild request rows to match indexer rows

The Requests and Indexers cards sit side by side but read as two
unrelated lists: requests led with a type badge, indexers with a status
dot, and the rows drifted out of alignment once the share bar landed.

Give a request row the same anatomy as an indexer row — status dot,
title over a dimmed detail line, badge on the right — folding the type
into the detail line and mapping request status onto the existing
dot colours (a new .warn light covers pending). Both row types now
share a --row-h floor so the two cards line up row for row; the share
bar's top margin is trimmed so an indexer row reaches that height
without overshooting it.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

static/css/base.css

@@ -48,6 +48,7 @@
   --radius:     10px;
   --radius-sm:  7px;
   --tap:        44px;       /* minimum touch target */
+  --row-h:      4.25rem;   /* paired Requests / Indexers row height */
 
   --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
   --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;