fix: limit roundtable chain rail height

frontend-web/src/roundtable-planning/pages/RoundtablePlanningPage.tsx

@@ -3067,7 +3067,7 @@ function RoundtableEntryRail({
             {chains.length === 0 ? (
               <p className="text-xs text-slate-400 py-1.5">暂无公共业务链</p>
             ) : (
-              <div className="max-h-[360px] overflow-y-auto pr-1 -mr-1 custom-scrollbar">
+              <div className="max-h-[292px] overflow-y-auto pr-1 -mr-1 custom-scrollbar">
                 <div className="flex flex-col gap-2.5 py-0.5">
               {chains.map((chain) => {
                 const selected = selectedChainId === chain.id;
@@ -3078,7 +3078,7 @@ function RoundtableEntryRail({
                   <div
                     key={chain.id}
                     className={cn(
-                      "rounded-xl border transition-all duration-200",
+                      "min-h-[88px] rounded-xl border transition-all duration-200",
                       selected
                         ? "border-primary/25 bg-primary/5 ring-1 ring-primary/20 shadow-sm"
                         : "border-[#ECE7E4] bg-neutral-50/50 hover:border-neutral-300 hover:bg-neutral-50",