feat(admin): make user rate limits configurable via admin UI

Add rate_limit_settings table and corresponding admin permissions
Replace static user rate limits with dynamic in-memory counters
Add interface in admin panel to configure rate limit policies

frontend/src/styles/main.css

@@ -806,6 +806,35 @@ button:disabled,
   max-width: 680px;
 }
 
+.rate-limit-list {
+  display: grid;
+  gap: 0;
+}
+
+.rate-limit-row {
+  display: grid;
+  gap: 10px;
+  padding: 14px 0;
+  border-bottom: 1px solid var(--line);
+}
+
+.rate-limit-row:last-child {
+  border-bottom: 0;
+}
+
+.rate-limit-row h3 {
+  margin: 0;
+  color: var(--ink);
+  font-size: 15px;
+  font-weight: 900;
+}
+
+.rate-limit-fields {
+  display: grid;
+  grid-template-columns: repeat(3, minmax(120px, 1fr));
+  gap: 12px;
+}
+
 .pokemon-edit-form {
   height: clamp(420px, calc(100dvh - 188px), 640px);
   min-height: 0;
@@ -6002,7 +6031,8 @@ button:disabled,
 
   .life-toolbar,
   .life-toolbar__search,
-  .life-toolbar__filters {
+  .life-toolbar__filters,
+  .rate-limit-fields {
     grid-template-columns: 1fr;
   }