完善AMESim组件界面与仿真求解稳定性

frontend/src/componentSymbols/boundary.tsx

@@ -0,0 +1,15 @@
+import { SYMBOL_ACCENT, SYMBOL_STROKE, SymbolSvg } from "./primitives";
+
+export function AmesimPnpl01Symbol() {
+  return (
+    <SymbolSvg domain="pneumatic">
+      <path d="M2 24h34" stroke={SYMBOL_STROKE} strokeWidth="2" />
+      <path
+        d="m35 17 14 14m0-14L35 31"
+        stroke={SYMBOL_ACCENT}
+        strokeLinecap="round"
+        strokeWidth="3"
+      />
+    </SymbolSvg>
+  );
+}