Add a name search box to Add players, explain what "Suggested" means

"Suggested" is whoever was on this team's roster last season -- now spelled
out in a caption under the chips (same for "No team"), not just left for a
coach to guess at. The search box (?q=, ANDed with whichever filter chip is
active) narrows the eligible pool by first/last name, useful once a club's
pool of eligible members outgrows a single screenful.

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

static/css/app.css

@@ -4907,6 +4907,9 @@
   .pt-4 {
     padding-top: calc(var(--spacing) * 4);
   }
+  .pr-3 {
+    padding-right: calc(var(--spacing) * 3);
+  }
   .pb-0 {
     padding-bottom: 0;
   }