feat: clickable pills, configurable page size, CQRE.NET branding

- Service/category pills are now clickable: click to filter by that service
- Result pills (Success, Failure, etc.) are now clickable: click to filter by that result
- Click again to clear the filter (toggle behavior)
- Change default page size from 100 to 25
- Add DEFAULT_PAGE_SIZE config (env var, default 25), exposed via /api/config/features
- Change footer brand from CQRE to CQRE.NET
- Add pill--clickable hover styles
- Bump CSS cache-buster to v=10

backend/frontend/style.css

@@ -355,6 +355,27 @@ input {
   border-color: rgba(239, 68, 68, 0.5);
 }
 
+.pill--clickable {
+  cursor: pointer;
+  transition: transform 0.1s ease, box-shadow 0.15s ease, background 0.15s ease;
+}
+
+.pill--clickable:hover {
+  transform: translateY(-1px);
+  box-shadow: 0 2px 8px rgba(125, 211, 252, 0.2);
+  background: rgba(125, 211, 252, 0.2);
+}
+
+.pill--clickable.pill--ok:hover {
+  box-shadow: 0 2px 8px rgba(34, 197, 94, 0.2);
+  background: rgba(34, 197, 94, 0.25);
+}
+
+.pill--clickable.pill--warn:hover {
+  box-shadow: 0 2px 8px rgba(249, 115, 22, 0.2);
+  background: rgba(249, 115, 22, 0.25);
+}
+
 .event h3 {
   margin: 0 0 6px;
   font-size: 17px;