feat: add peq foor input

src/features/dsp408/components/InputSection/InputSection.css

@@ -163,7 +163,7 @@
   position: relative;
   height: 10;
 
-  aspect-ratio: 0.75;
+  aspect-ratio: 0.8;
   flex: 0 0 auto;
 
   display: flex;
@@ -361,3 +361,47 @@
 
   box-sizing: border-box;
 }
+
+.input-graph-panel__magnitude-wrap {
+  flex: 1 1 0;
+  min-height: 0;
+  min-width: 0;
+  position: relative;
+}
+
+.input-graph__title-row {
+  flex: 0 0 auto;
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  padding: 1cqh 1.5cqh;
+}
+
+.input-graph__title-row .input-graph__title {
+  padding: 0; /* was on the standalone title element; row now owns spacing */
+}
+
+.input-graph-view-toggle {
+  display: flex;
+  gap: 0.4cqh;
+  border: var(--border-width) solid var(--border-hairline);
+  border-radius: var(--radius-sm);
+  padding: 0.3cqh;
+  background: var(--bg-void);
+}
+
+.input-graph-view-toggle__btn {
+  font-family: var(--font-ui);
+  font-size: 2cqh;
+  padding: 0.6cqh 1.2cqh;
+  background: transparent;
+  color: var(--text-muted);
+  border: none;
+  border-radius: var(--radius-sm);
+  cursor: pointer;
+}
+
+.input-graph-view-toggle__btn.active {
+  background: var(--accent, #4dd0e1);
+  color: var(--bg-void);
+}