Update Vite configuration to deduplicate React and React-DOM; enhance DeviceContext with syncPeqCatalog method for improved PEQ state management; refactor LuxsinAPI to streamline PEQ filter updates; replace range input with ThumbOnlyRangeSlider in Home component for better user experience.

client/src/components/ThumbOnlyRangeSlider.tsx

@@ -0,0 +1,145 @@
+import { cn } from "@/lib/utils";
+import { useRef, type CSSProperties } from "react";
+
+/** Matches .cyan-slider thumb (~17.6px); generous hit area for touch. */
+const THUMB_HIT_RADIUS_PX = 24;
+
+function valueFromClientX(input: HTMLInputElement, clientX: number): number {
+  const rect = input.getBoundingClientRect();
+  const min = Number(input.min);
+  const max = Number(input.max);
+  if (rect.width <= 0) return Number(input.value);
+  const ratio = Math.max(0, Math.min(1, (clientX - rect.left) / rect.width));
+  return Math.round(min + ratio * (max - min));
+}
+
+function isPointerOnThumb(input: HTMLInputElement, clientX: number): boolean {
+  const rect = input.getBoundingClientRect();
+  const min = Number(input.min);
+  const max = Number(input.max);
+  const value = Number(input.value);
+  const span = max - min;
+  const ratio = span > 0 ? (value - min) / span : 0;
+  const thumbCenterX = rect.left + ratio * rect.width;
+  return Math.abs(clientX - thumbCenterX) <= THUMB_HIT_RADIUS_PX;
+}
+
+const RELEASE_KEYS = [
+  "ArrowLeft",
+  "ArrowRight",
+  "ArrowUp",
+  "ArrowDown",
+  "Home",
+  "End",
+  "PageUp",
+  "PageDown",
+] as const;
+
+export interface ThumbOnlyRangeSliderProps {
+  value: number;
+  min: number;
+  max: number;
+  disabled?: boolean;
+  className?: string;
+  style?: CSSProperties;
+  onChange: (value: number) => void;
+  /** Fires when the user releases the thumb after a drag or keyboard adjust. */
+  onRelease?: (value: number) => void;
+  onDragStart?: () => void;
+  onDragEnd?: () => void;
+}
+
+/**
+ * Range slider that ignores track clicks/taps — only the thumb can be dragged.
+ * Prevents accidental jumps to high volume when missing the thumb.
+ */
+export default function ThumbOnlyRangeSlider({
+  value,
+  min,
+  max,
+  disabled = false,
+  className,
+  style,
+  onChange,
+  onRelease,
+  onDragStart,
+  onDragEnd,
+}: ThumbOnlyRangeSliderProps) {
+  const draggingRef = useRef(false);
+
+  const emitRelease = (el: EventTarget | null) => {
+    if (disabled) return;
+    if (!(el instanceof HTMLInputElement)) return;
+    onRelease?.(Number(el.value));
+    onDragEnd?.();
+  };
+
+  return (
+    <input
+      type="range"
+      min={min}
+      max={max}
+      value={value}
+      disabled={disabled}
+      className={cn("cyan-slider relative z-10", className)}
+      style={{ touchAction: "none", ...style }}
+      onChange={(e) => {
+        if (disabled || draggingRef.current) return;
+        onChange(Number(e.target.value));
+      }}
+      onPointerDown={(e) => {
+        if (disabled) return;
+        const input = e.currentTarget;
+        if (!isPointerOnThumb(input, e.clientX)) {
+          e.preventDefault();
+          return;
+        }
+        e.preventDefault();
+        draggingRef.current = true;
+        onDragStart?.();
+        input.setPointerCapture(e.pointerId);
+        onChange(valueFromClientX(input, e.clientX));
+      }}
+      onPointerMove={(e) => {
+        if (disabled || !draggingRef.current) return;
+        onChange(valueFromClientX(e.currentTarget, e.clientX));
+      }}
+      onPointerUp={(e) => {
+        if (!draggingRef.current) return;
+        draggingRef.current = false;
+        try {
+          e.currentTarget.releasePointerCapture(e.pointerId);
+        } catch {
+          // ignore
+        }
+        emitRelease(e.currentTarget);
+      }}
+      onPointerCancel={(e) => {
+        if (!draggingRef.current) return;
+        draggingRef.current = false;
+        emitRelease(e.currentTarget);
+      }}
+      onLostPointerCapture={(e) => {
+        if (!draggingRef.current) return;
+        draggingRef.current = false;
+        emitRelease(e.currentTarget);
+      }}
+      onBlur={(e) => {
+        if (draggingRef.current) {
+          draggingRef.current = false;
+          emitRelease(e.currentTarget);
+          return;
+        }
+        if (!disabled) {
+          onRelease?.(Number(e.currentTarget.value));
+        }
+      }}
+      onKeyUp={(e) => {
+        if (disabled) return;
+        if (RELEASE_KEYS.includes(e.key as (typeof RELEASE_KEYS)[number])) {
+          emitRelease(e.currentTarget);
+        }
+      }}
+    />
+  );
+}

client/src/contexts/DeviceContext.tsx

@@ -31,6 +31,8 @@ interface DeviceContextType {
   updatePeq: (filters: PeqFilter[]) => Promise<void>;
   upgradePeqChange: (payload: PeqChangePayload) => Promise<void>;
   upgradePeqApply: (payload: PeqApplyPayload) => Promise<void>;
+  /** 与设备 syncPeq 结果对齐全局 peqState，避免 EQ 页本地列表与轮询缓存不一致 */
+  syncPeqCatalog: (state: PeqState) => void;
   // Optimistic state updaters
   setVolume: (v: number) => void;
   setInput: (v: number) => void;
@@ -72,6 +74,10 @@ export function DeviceProvider({ children }: { children: React.ReactNode }) {
     setPeqState(peq);
   }, []);
 
+  const syncPeqCatalog = useCallback((state: PeqState) => {
+    setPeqState(state);
+  }, []);
+
   const connect = useCallback(async (forceDemo?: boolean, connectIp?: string) => {
     const useDemo = forceDemo !== undefined ? forceDemo : isDemoMode;
     const targetIp = (connectIp ?? ip).trim();
@@ -176,6 +182,7 @@ export function DeviceProvider({ children }: { children: React.ReactNode }) {
   }, []);
 
   const upgradePeqChange = useCallback(async (payload: PeqChangePayload) => {
+    console.log("[peqChange]", payload.peqChange);
     if (isDemoMode) {
       applyPeqFiltersToState(payload.peqChange.filters);
       return;
@@ -186,6 +193,7 @@ export function DeviceProvider({ children }: { children: React.ReactNode }) {
   }, [api, isDemoMode, applyPeqFiltersToState]);
 
   const upgradePeqApply = useCallback(async (payload: PeqApplyPayload) => {
+    console.log("[peqApply]", payload.peqApply);
     if (isDemoMode) {
       applyPeqFiltersToState(payload.peqApply.filters);
       return;
@@ -263,7 +271,7 @@ export function DeviceProvider({ children }: { children: React.ReactNode }) {
       isConnected, isConnecting, isDemoMode, setDemoMode,
       deviceState, peqState, lastUpdated, error,
       connect, disconnect, refresh, api,
-      updateSetting, updatePeq, upgradePeqChange, upgradePeqApply,
+      updateSetting, updatePeq, upgradePeqChange, upgradePeqApply, syncPeqCatalog,
       setVolume, setInput, setOutput, setBalance,
     }}>
       {children}

client/src/lib/luxsinApi.ts

@@ -248,13 +248,7 @@ export class LuxsinAPI {
   }
 
   async setPeqFilters(filters: PeqFilter[]): Promise<void> {
-    const payload = JSON.stringify({ peqChange: { filters } });
+    await this.postPeqJson({ peqChange: { filters } } as PeqChangePayload);
-    const encoded = encodeCustomBase64(payload);
-    await fetch(`${this.baseUrl}/dev/info.cgi`, {
-      method: "POST",
-      headers: { "Content-Type": "application/x-www-form-urlencoded" },
-      body: `json=${encodeURIComponent(encoded)}`,
-    });
   }
 
   /** Full peq preset: name, filters, autoPre, preamp, canDel — same encoding as legacy `upgradePeq`. */
@@ -267,24 +261,27 @@ export class LuxsinAPI {
     await this.postPeqJson(body);
   }
 
+  /** POST `json=<custom-base64>` — matches legacy axios `upgradePeq`. */
   private async postPeqJson(body: PeqChangePayload | PeqApplyPayload): Promise<void> {
-    const payload = JSON.stringify(body);
+    const encoded = encodeCustomBase64(JSON.stringify(body));
-    const encoded = encodeCustomBase64(payload);
+    const form = new URLSearchParams();
+    form.set("json", encoded);
     await fetch(`${this.baseUrl}/dev/info.cgi`, {
       method: "POST",
-      headers: { "Content-Type": "application/x-www-form-urlencoded" },
+      headers: { "Content-Type": "application/x-www-form-urlencoded; charset=UTF-8" },
-      body: `json=${encodeURIComponent(encoded)}`,
+      body: form.toString(),
     });
   }
 
   /** Remove one or more headphone PEQ profiles. */
   async removePeq(names: string[]): Promise<void> {
-    const payload = JSON.stringify({ peqRemove: names });
+    const encoded = encodeCustomBase64(JSON.stringify({ peqRemove: names }));
-    const encoded = encodeCustomBase64(payload);
+    const form = new URLSearchParams();
+    form.set("json", encoded);
     await fetch(`${this.baseUrl}/dev/info.cgi`, {
       method: "POST",
       headers: { "Content-Type": "application/x-www-form-urlencoded; charset=UTF-8" },
-      body: `json=${encodeURIComponent(encoded)}`,
+      body: form.toString(),
     });
   }
 

client/src/pages/Home.tsx

@@ -12,6 +12,7 @@
 import { useDevice } from "@/contexts/DeviceContext";
 import ConnectionPlaceholder from "@/components/ConnectionPlaceholder";
 import BottomNav from "@/components/BottomNav";
+import ThumbOnlyRangeSlider from "@/components/ThumbOnlyRangeSlider";
 import {
   AlertDialog,
   AlertDialogAction,
@@ -646,54 +647,25 @@ export default function Home() {
                 boxShadow: volumeControlsLocked ? "none" : "0 0 8px rgba(0,255,246,0.5)",
               }}
             />
-            <input
+            <ThumbOnlyRangeSlider
-              type="range"
               min={0}
               max={200}
               value={localVol}
               disabled={volumeControlsLocked}
-              className="cyan-slider relative z-10"
+              onChange={(v) => {
-              onChange={(e) => {
                 if (volumeControlsLocked) return;
-                const v = Number(e.target.value);
                 setLocalVol(v);
               }}
-              onPointerDown={() => {
+              onDragStart={() => {
                 if (volumeControlsLocked) return;
                 isDragging.current = true;
               }}
-              onPointerUp={(e) => {
+              onDragEnd={() => {
                 isDragging.current = false;
-                if (volumeControlsLocked) return;
-                setVolume(Number(e.currentTarget.value));
               }}
-              onPointerCancel={(e) => {
+              onRelease={(v) => {
-                isDragging.current = false;
                 if (volumeControlsLocked) return;
-                setVolume(Number(e.currentTarget.value));
+                setVolume(v);
-              }}
-              onBlur={(e) => {
-                isDragging.current = false;
-                if (volumeControlsLocked) {
-                  return;
-                }
-                setVolume(Number(e.currentTarget.value));
-              }}
-              onKeyUp={(e) => {
-                if (volumeControlsLocked) return;
-                const k = e.key;
-                if (
-                  k === "ArrowLeft" ||
-                  k === "ArrowRight" ||
-                  k === "ArrowUp" ||
-                  k === "ArrowDown" ||
-                  k === "Home" ||
-                  k === "End" ||
-                  k === "PageUp" ||
-                  k === "PageDown"
-                ) {
-                  setVolume(Number(e.currentTarget.value));
-                }
               }}
             />
           </div>

client/src/pages/eq/components/EqPrimitives.tsx

@@ -0,0 +1,50 @@
+export function IOSToggle({ checked, onChange }: { checked: boolean; onChange: (v: boolean) => void }) {
+  return (
+    <label className="ios-toggle" onClick={(e) => e.stopPropagation()}>
+      <input type="checkbox" checked={checked} onChange={(e) => onChange(e.target.checked)} />
+      <span className="ios-toggle-track">
+        <span className="ios-toggle-thumb" />
+      </span>
+    </label>
+  );
+}
+
+export function CyanSlider({
+  value,
+  min,
+  max,
+  step = 1,
+  onChange,
+  disabled = false,
+}: {
+  value: number;
+  min: number;
+  max: number;
+  step?: number;
+  onChange: (v: number) => void;
+  disabled?: boolean;
+}) {
+  const fillPct = Math.max(0, Math.min(100, ((value - min) / (max - min)) * 100));
+  return (
+    <div className={`relative flex items-center w-full mt-2 ${disabled ? "opacity-60" : ""}`}>
+      <div
+        className="absolute left-0 h-[4px] rounded-full pointer-events-none"
+        style={{
+          width: `${fillPct}%`,
+          background: disabled ? "rgba(148,163,184,0.7)" : "#00FFF6",
+          boxShadow: disabled ? "none" : "0 0 6px rgba(0,255,246,0.45)",
+        }}
+      />
+      <input
+        type="range"
+        min={min}
+        max={max}
+        step={step}
+        value={value}
+        className="cyan-slider relative z-10"
+        disabled={disabled}
+        onChange={(e) => onChange(Number(e.target.value))}
+      />
+    </div>
+  );
+}

client/src/pages/eq/components/FreqChart.tsx

@@ -0,0 +1,424 @@
+import { useEffect, useMemo, useRef, useState } from "react";
+import { toast } from "sonner";
+import { useStrokeDrawAnimation } from "@/lib/useStrokeDrawAnimation";
+import { buildPeqSvgCurveData, sampleCombinedPeqMagnitudeDb } from "@/lib/peqAudio";
+import { eqInterp } from "../eqFormatters";
+import type { EqBand, PeqEqUi } from "../types";
+
+export type FreqChartProps = {
+  bands: EqBand[];
+  rawCurve: number[] | null;
+  selectedBand: number;
+  abMode: "A" | "B";
+  onAbToggle: (m: "A" | "B") => void;
+  onCopyAndSwitchTo: (to: "A" | "B") => void;
+  onApplyB: () => void;
+  onSaveB: () => void;
+  onBandDrag: (idx: number, patch: Partial<{ freq: number; gain: number }>) => void;
+  onBandSelect: (idx: number) => void;
+  eqUi: PeqEqUi;
+};
+
+export function FreqChart({
+  bands,
+  rawCurve,
+  selectedBand,
+  abMode,
+  onAbToggle,
+  onCopyAndSwitchTo,
+  onApplyB,
+  onSaveB,
+  onBandDrag,
+  onBandSelect,
+  eqUi,
+}: FreqChartProps) {
+  /** 频响图 SVG 高度（viewBox 与 CSS 一致） */
+  const H = 400;
+  const chartContainerRef = useRef<HTMLDivElement | null>(null);
+  const svgRef = useRef<SVGSVGElement | null>(null);
+  const draggingBandRef = useRef<number | null>(null);
+  const curvePathRef = useRef<SVGPathElement | null>(null);
+  const rawPathRef = useRef<SVGPathElement | null>(null);
+  const equalizedPathRef = useRef<SVGPathElement | null>(null);
+  const [chartWidth, setChartWidth] = useState(340);
+  const W = chartWidth;
+  const [isBandDragging, setIsBandDragging] = useState(false);
+
+  useEffect(() => {
+    const node = chartContainerRef.current;
+    if (!node) return;
+
+    const updateWidth = () => {
+      const nextWidth = Math.round(node.clientWidth);
+      if (nextWidth > 0) setChartWidth(nextWidth);
+    };
+
+    updateWidth();
+    const observer = new ResizeObserver(updateWidth);
+    observer.observe(node);
+    return () => observer.disconnect();
+  }, []);
+
+  const Y_DB_MAX = 20;
+
+  const freqToX = (f: number) => {
+    const logMin = Math.log10(20),
+      logMax = Math.log10(20000);
+    return ((Math.log10(Math.max(20, Math.min(20000, f))) - logMin) / (logMax - logMin)) * W;
+  };
+  const gainToY = (g: number) => H / 2 - (g / Y_DB_MAX) * (H / 2 - 10);
+  const xToFreq = (x: number) => {
+    const logMin = Math.log10(20),
+      logMax = Math.log10(20000);
+    const clampedX = Math.max(0, Math.min(W, x));
+    return Math.pow(10, logMin + (clampedX / W) * (logMax - logMin));
+  };
+  const yToGain = (y: number) => {
+    const clampedY = Math.max(10, Math.min(H - 10, y));
+    return ((H / 2 - clampedY) / (H / 2 - 10)) * Y_DB_MAX;
+  };
+
+  const updateBandFromPointer = (idx: number, clientX: number, clientY: number) => {
+    const svg = svgRef.current;
+    if (!svg || W <= 0) return;
+    const rect = svg.getBoundingClientRect();
+    if (!rect.width || !rect.height) return;
+
+    const x = ((clientX - rect.left) / rect.width) * W;
+    const y = ((clientY - rect.top) / rect.height) * H;
+    const freq = Math.round(Math.max(20, Math.min(20000, xToFreq(x))));
+    const gain = Number(Math.max(-Y_DB_MAX, Math.min(Y_DB_MAX, yToGain(y))).toFixed(1));
+    onBandDrag(idx, { freq, gain });
+  };
+
+  const handleBandPointerDown = (idx: number, e: React.PointerEvent<SVGGElement>) => {
+    e.preventDefault();
+    e.stopPropagation();
+    draggingBandRef.current = idx;
+    setIsBandDragging(true);
+    onBandSelect(idx);
+    updateBandFromPointer(idx, e.clientX, e.clientY);
+  };
+
+  const handleSvgPointerMove = (e: React.PointerEvent<SVGSVGElement>) => {
+    const idx = draggingBandRef.current;
+    if (idx === null) return;
+    e.preventDefault();
+    updateBandFromPointer(idx, e.clientX, e.clientY);
+  };
+
+  const stopDragging = () => {
+    draggingBandRef.current = null;
+    setIsBandDragging(false);
+  };
+
+  const curveData = useMemo(
+    () =>
+      buildPeqSvgCurveData({
+        bands,
+        width: W,
+        height: H,
+        fs: 48000,
+        yDbMax: Y_DB_MAX,
+        minFreq: 20,
+        maxFreq: 20000,
+        paddingY: 10,
+      }),
+    [bands, W, H],
+  );
+  const pathD = curveData.pathD;
+  const fillD = curveData.fillD;
+
+  /** 各带中心频率处级联响应 dB，与黄线同源 — 手柄纵坐标须用此值才能落在曲线上 */
+  const combinedMagDbAtHandles = useMemo(
+    () => bands.map((b) => sampleCombinedPeqMagnitudeDb(bands, b.freq, 48000)),
+    [bands],
+  );
+
+  const [curveVisibilityByMode, setCurveVisibilityByMode] = useState<
+    Record<"A" | "B", { eq: boolean; raw: boolean; equalized: boolean }>
+  >({
+    A: { eq: true, raw: true, equalized: true },
+    B: { eq: true, raw: false, equalized: false },
+  });
+  const showEq = curveVisibilityByMode[abMode].eq;
+  const showRaw = curveVisibilityByMode[abMode].raw;
+  const showEqualized = curveVisibilityByMode[abMode].equalized;
+
+  const toggleCurveVisibility = (key: "eq" | "raw" | "equalized") => {
+    setCurveVisibilityByMode((prev) => ({
+      ...prev,
+      [abMode]: {
+        ...prev[abMode],
+        [key]: !prev[abMode][key],
+      },
+    }));
+  };
+
+  const rawPathD = useMemo(() => {
+    if (!Array.isArray(rawCurve) || rawCurve.length !== curveData.points.length) return "";
+    return curveData.points
+      .map((p, i) => `${i === 0 ? "M" : "L"} ${p.x.toFixed(1)} ${gainToY(rawCurve[i] ?? 0).toFixed(1)}`)
+      .join(" ");
+  }, [rawCurve, curveData.points]);
+  const equalizedPathD = useMemo(() => {
+    if (!Array.isArray(rawCurve) || rawCurve.length !== curveData.points.length) return "";
+    return curveData.points
+      .map((p, i) => {
+        const y = gainToY((p.gainDb ?? 0) + (rawCurve[i] ?? 0));
+        return `${i === 0 ? "M" : "L"} ${p.x.toFixed(1)} ${y.toFixed(1)}`;
+      })
+      .join(" ");
+  }, [rawCurve, curveData.points]);
+  const hasRawCurve = !!rawPathD;
+  const hasEqualizedCurve = !!equalizedPathD;
+
+  // Intro draw once; EQ param edits update path in place without replaying the stroke animation.
+  const strokeAnimOpts = { durationMs: 1350, replayOnPathChange: false as const };
+  useStrokeDrawAnimation(curvePathRef, pathD, {
+    ...strokeAnimOpts,
+    enabled: !isBandDragging,
+  });
+  useStrokeDrawAnimation(rawPathRef, rawPathD, {
+    ...strokeAnimOpts,
+    enabled: !isBandDragging && !!rawPathD,
+  });
+  useStrokeDrawAnimation(equalizedPathRef, equalizedPathD, {
+    ...strokeAnimOpts,
+    enabled: !isBandDragging && !!equalizedPathD,
+  });
+
+  const targetMode: "A" | "B" = abMode === "A" ? "B" : "A";
+  const copyButtonText = eqInterp(eqUi.chartCopyTo, { mode: targetMode });
+
+  const freqLabels = [20, 50, 100, 200, 500, 1000, 2000, 5000, 10000, 20000];
+  const gainLabels = [20, 15, 10, 5, 0, -5, -10, -15, -20];
+
+  return (
+    <div className="ios-list-group p-3 mb-3">
+      {/* Legend row */}
+      <div className="flex items-center gap-3 mb-2 px-1">
+        <button
+          type="button"
+          className="flex items-center gap-1.5 active:opacity-80 transition-opacity"
+          onClick={() => toggleCurveVisibility("eq")}
+        >
+          <div className="w-3 h-[2px] rounded" style={{ background: "#FFED00" }} />
+          <span className="text-[10px]" style={{ color: "#FFED00", opacity: showEq ? 1 : 0.35 }}>
+            Equalizer
+          </span>
+        </button>
+        <button
+          type="button"
+          className="flex items-center gap-1.5 active:opacity-80 transition-opacity disabled:opacity-40 disabled:cursor-not-allowed"
+          onClick={() => toggleCurveVisibility("raw")}
+          disabled={!hasRawCurve}
+        >
+          <div className="w-3 h-[2px] rounded" style={{ background: "#ffffff" }} />
+          <span className="text-[10px]" style={{ color: "#ffffff", opacity: showRaw ? 1 : 0.35 }}>
+            Raw
+          </span>
+        </button>
+        <button
+          type="button"
+          className="flex items-center gap-1.5 active:opacity-80 transition-opacity disabled:opacity-40 disabled:cursor-not-allowed"
+          onClick={() => toggleCurveVisibility("equalized")}
+          disabled={!hasEqualizedCurve}
+        >
+          <div className="w-3 h-[2px] rounded" style={{ background: "#23d2fe" }} />
+          <span className="text-[10px]" style={{ color: "#23d2fe", opacity: showEqualized ? 1 : 0.35 }}>
+            Equalized
+          </span>
+        </button>
+      </div>
+
+      {/* A/B + DIFF controls */}
+      <div className="flex w-full items-center gap-2 mb-2 px-1">
+        <div className="flex min-w-0 items-center gap-2">
+          {/* A/B toggle pill */}
+          <div
+            className="flex items-center rounded-[8px] overflow-hidden"
+            style={{ background: "rgba(44,44,46,0.7)", border: "1px solid rgba(255,255,255,0.08)" }}
+          >
+            {(["A", "B"] as const).map((m) => (
+              <button
+                key={m}
+                className="px-3 py-1 text-[12px] font-semibold transition-all duration-150"
+                style={
+                  abMode === m
+                    ? {
+                        background: "#00FFF6",
+                        color: "#000",
+                        borderRadius: 6,
+                      }
+                    : { color: "rgba(255,255,255,0.4)" }
+                }
+                onClick={() => onAbToggle(m)}
+              >
+                {m}
+              </button>
+            ))}
+          </div>
+          <button
+            className="px-3 py-1 rounded-[8px] text-[11px] text-white/50 active:text-white transition-colors"
+            style={{ background: "rgba(44,44,46,0.7)", border: "1px solid rgba(255,255,255,0.08)" }}
+            onClick={() => {
+              onCopyAndSwitchTo(targetMode);
+              setCurveVisibilityByMode((prev) => ({
+                ...prev,
+                [targetMode]: { ...prev[abMode] },
+              }));
+              toast.success(eqInterp(eqUi.toastChartCopied, { mode: targetMode }));
+            }}
+          >
+            {copyButtonText}
+          </button>
+        </div>
+        <div className="ml-auto flex shrink-0 items-center gap-2">
+          <button
+            type="button"
+            className="px-3 py-1 rounded-[8px] text-[11px] text-white/50 active:text-white transition-colors"
+            style={{ background: "rgba(44,44,46,0.7)", border: "1px solid rgba(255,255,255,0.08)" }}
+            onClick={() => onApplyB()}
+          >
+            {eqUi.chartApplyB}
+          </button>
+          <button
+            type="button"
+            className="px-3 py-1 rounded-[8px] text-[11px] text-white/50 active:text-white transition-colors"
+            style={{ background: "rgba(44,44,46,0.7)", border: "1px solid rgba(255,255,255,0.08)" }}
+            onClick={() => onSaveB()}
+          >
+            {eqUi.chartSaveB}
+          </button>
+        </div>
+      </div>
+
+      {/* SVG chart */}
+      <div
+        ref={chartContainerRef}
+        className="rounded-[10px] overflow-hidden"
+        style={{ background: "rgba(10,12,10,0.7)" }}
+      >
+        <svg
+          ref={svgRef}
+          viewBox={`0 0 ${W} ${H}`}
+          className="w-full"
+          style={{ height: H, touchAction: "none" }}
+          onPointerMove={handleSvgPointerMove}
+          onPointerUp={stopDragging}
+          onPointerCancel={stopDragging}
+          onPointerLeave={stopDragging}
+        >
+          {/* dB grid */}
+          {gainLabels.map((g) => (
+            <g key={g}>
+              <line x1="0" y1={gainToY(g)} x2={W} y2={gainToY(g)} stroke="rgba(255,255,255,0.05)" strokeWidth="1" />
+              <text x="3" y={gainToY(g) - 2} fontSize="7" fill="rgba(255,255,255,0.2)">
+                {g > 0 ? `+${g}` : g}
+              </text>
+            </g>
+          ))}
+          {/* Freq grid */}
+          {freqLabels.map((f) => (
+            <line
+              key={f}
+              x1={freqToX(f)}
+              y1="0"
+              x2={freqToX(f)}
+              y2={H - 12}
+              stroke="rgba(255,255,255,0.05)"
+              strokeWidth="1"
+            />
+          ))}
+          {/* Zero line */}
+          <line x1="0" y1={H / 2} x2={W} y2={H / 2} stroke="rgba(255,255,255,0.15)" strokeWidth="1" />
+          {/* Fill */}
+          {showEq && <path d={fillD} fill="rgba(255, 237, 0, 0.08)" />}
+          {/* EQ curve */}
+          {showEq && (
+            <path
+              ref={curvePathRef}
+              d={pathD}
+              fill="none"
+              stroke="#FFED00"
+              strokeWidth="2"
+              strokeLinecap="round"
+              strokeLinejoin="round"
+            />
+          )}
+          {/* Raw */}
+          {rawPathD && showRaw && (
+            <path
+              ref={rawPathRef}
+              d={rawPathD}
+              fill="none"
+              stroke="#ffffff"
+              strokeWidth="1.6"
+              strokeLinecap="round"
+              strokeLinejoin="round"
+              opacity="0.9"
+            />
+          )}
+          {/* Equalized = EQ + Raw */}
+          {equalizedPathD && showEqualized && (
+            <path
+              ref={equalizedPathRef}
+              d={equalizedPathD}
+              fill="none"
+              stroke="#23d2fe"
+              strokeWidth="1.8"
+              strokeLinecap="round"
+              strokeLinejoin="round"
+              opacity="0.95"
+            />
+          )}
+          {/* Band nodes with index */}
+          {showEq &&
+            bands.map((band, i) => (
+              <g key={i} style={{ cursor: "grab" }} onPointerDown={(e) => handleBandPointerDown(i, e)}>
+                {(() => {
+                  const isSelected = i === selectedBand;
+                  const outerR = isSelected ? 8.8 : 7;
+                  const fillColor = isSelected ? "#FFED00" : "rgba(0,0,0,0.5)";
+                  const strokeColor = isSelected ? "#FFED00" : "#FFED00";
+                  const textColor = isSelected ? "#000000" : "#FFED00";
+                  const handleY = gainToY(combinedMagDbAtHandles[i] ?? 0);
+                  return (
+                    <>
+                      <circle cx={freqToX(band.freq)} cy={handleY} r="14" fill="transparent" />
+                      <circle
+                        cx={freqToX(band.freq)}
+                        cy={handleY}
+                        r={outerR}
+                        fill={fillColor}
+                        stroke={strokeColor}
+                        strokeWidth={isSelected ? 1.8 : 1.5}
+                      />
+                      <text
+                        x={freqToX(band.freq)}
+                        y={handleY + 3.5}
+                        textAnchor="middle"
+                        fontSize="7"
+                        fill={textColor}
+                        fontWeight="bold"
+                        pointerEvents="none"
+                      >
+                        {i + 1}
+                      </text>
+                    </>
+                  );
+                })()}
+              </g>
+            ))}
+          {/* Freq axis labels */}
+          {freqLabels.map((f) => (
+            <text key={f} x={freqToX(f)} y={H - 1} textAnchor="middle" fontSize="7" fill="rgba(255,255,255,0.25)">
+              {f >= 1000 ? `${f / 1000}k` : f}
+            </text>
+          ))}
+        </svg>
+      </div>
+    </div>
+  );
+}

client/src/pages/eq/eqConstants.ts

@@ -0,0 +1,61 @@
+import type { CSSProperties } from "react";
+import type { PeqFilter } from "@/lib/luxsinApi";
+import type { CatalogTarget, EqBand } from "./types";
+
+export const FILTER_TYPES = ["LPF", "HPF", "BPF", "NOTCH", "PEAK", "LSHELF", "HSHELF", "APF"];
+
+export const BAND_FREQ_MIN = 20;
+export const BAND_FREQ_MAX = 20000;
+export const BAND_GAIN_MIN = -15;
+export const BAND_GAIN_MAX = 15;
+export const BAND_Q_MIN = 0.1;
+export const BAND_Q_MAX = 10;
+
+export const BAND_PARAM_VALUE_BOX_STYLE: CSSProperties = {
+  background: "rgba(44,44,46,0.9)",
+  border: "1px solid rgba(255,255,255,0.08)",
+};
+
+/** Default bands matching reference image */
+export const DEFAULT_BANDS: EqBand[] = [
+  { freq: 9500, gain: 0, q: 1.41, type: "LSHELF", enabled: true },
+  { freq: 9200, gain: -2, q: 1.41, type: "PEAK", enabled: true },
+  { freq: 220, gain: 1, q: 1.41, type: "PEAK", enabled: true },
+  { freq: 500, gain: -3, q: 1.41, type: "PEAK", enabled: true },
+  { freq: 1200, gain: 0, q: 1.41, type: "PEAK", enabled: true },
+  { freq: 13800, gain: -1, q: 1.41, type: "NOTCH", enabled: true },
+  { freq: 11000, gain: -2, q: 1.41, type: "PEAK", enabled: true },
+  { freq: 7400, gain: 1, q: 1.41, type: "PEAK", enabled: true },
+  { freq: 8200, gain: -1, q: 1.41, type: "PEAK", enabled: true },
+  { freq: 10000, gain: 0, q: 1.41, type: "HSHELF", enabled: true },
+];
+
+export const FLAT_PRESET_FILTERS: PeqFilter[] = [
+  { type: 4, fc: 80, gain: 0, q: 0.1 },
+  { type: 4, fc: 150, gain: 0, q: 0.1 },
+  { type: 4, fc: 350, gain: 0, q: 0.1 },
+  { type: 4, fc: 750, gain: 0, q: 0.1 },
+  { type: 4, fc: 1500, gain: 0, q: 0.1 },
+  { type: 4, fc: 3000, gain: 0, q: 0.1 },
+  { type: 4, fc: 6000, gain: 0, q: 0.1 },
+  { type: 4, fc: 10000, gain: 0, q: 0.1 },
+  { type: 4, fc: 14000, gain: 0, q: 0.1 },
+  { type: 4, fc: 18000, gain: 0, q: 0.1 },
+];
+
+export const CATALOG_TARGETS: CatalogTarget[] = [
+  { name: "Harman over-ear 2018", bassBoost: { fc: 105, q: 0.7, gain: 6 }, ear: "over" },
+  { name: "HMS II.3 Harman over-ear 2018", bassBoost: { fc: 105, q: 0.7, gain: 6 }, ear: "over" },
+  { name: "crinacle EARS + 711 Harman over-ear 2018", bassBoost: { fc: 105, q: 0.7, gain: 6 }, ear: "over" },
+  { name: "Harman in-ear 2019", bassBoost: { fc: 105, q: 0.7, gain: 9.5 }, ear: "in" },
+  { name: "AutoEq in-ear", bassBoost: { fc: 105, q: 0.7, gain: 8 }, ear: "in" },
+  { name: "HMS II.3 AutoEq in-ear", bassBoost: { fc: 105, q: 0.7, gain: 8 }, ear: "in" },
+  { name: "HMS II.3 Harman in-ear 2019", bassBoost: { fc: 105, q: 0.7, gain: 9.5 }, ear: "in" },
+  { name: "Diffuse Field 5128 (-1 dB/oct)", bassBoost: { fc: 105, q: 0.7, gain: 0 }, ear: "over" },
+  { name: "LMG 5128 0.6 without bass", bassBoost: { fc: 105, q: 0.7, gain: 6 }, ear: "over" },
+  { name: "JM-1 with Harman filters", bassBoost: { fc: 105, q: 0.7, gain: 6.5 }, ear: "all" },
+  { name: "oratory1990 in-ear", bassBoost: { fc: 105, q: 0.7, gain: 9.5 }, ear: "in" },
+  { name: "oratory1990 over-ear", bassBoost: { fc: 105, q: 0.7, gain: 6 }, ear: "over" },
+  { name: "Harman over-ear 2013", bassBoost: { fc: 105, q: 0.7, gain: 6 }, ear: "over" },
+  { name: "Flat", bassBoost: { fc: 105, q: 0.7, gain: 0 }, ear: "all" },
+];

client/src/pages/eq/eqFormatters.ts

@@ -0,0 +1,111 @@
+import { getFilterShortName } from "@/lib/peqAudio";
+import {
+  BAND_FREQ_MAX,
+  BAND_FREQ_MIN,
+  BAND_GAIN_MAX,
+  BAND_GAIN_MIN,
+  BAND_Q_MAX,
+  BAND_Q_MIN,
+} from "./eqConstants";
+import type { BandParamKind } from "./types";
+
+export function eqInterp(template: string | undefined, vars: Record<string, string | number>): string {
+  if (!template) return "";
+  let s = template;
+  for (const [k, v] of Object.entries(vars)) {
+    s = s.split(`{{${k}}}`).join(String(v));
+  }
+  return s;
+}
+
+export function formatBandFreqDisplay(freq: number) {
+  return freq >= 1000
+    ? `${(freq / 1000).toFixed(2).replace(/\.?0+$/, "")} kHz`
+    : `${freq} Hz`;
+}
+
+export function formatBandParamForInput(
+  kind: BandParamKind,
+  band: { freq: number; gain: number; q: number },
+) {
+  switch (kind) {
+    case "freq":
+      return String(band.freq);
+    case "gain":
+      return band.gain.toFixed(1);
+    case "q":
+      return band.q.toFixed(2);
+  }
+}
+
+export function parseBandParamInput(
+  kind: BandParamKind,
+  raw: string,
+  messages: { invalid: string; outOfRange: string },
+): { ok: true; value: number } | { ok: false; message: string } {
+  const trimmed = raw.trim();
+  if (!trimmed) return { ok: false, message: messages.invalid };
+
+  if (kind === "freq") {
+    let s = trimmed.replace(/\s+/g, "").toLowerCase().replace(/hz$/, "");
+    const kHz = /k(hz)?$/.test(s);
+    if (kHz) s = s.replace(/k(hz)?$/, "");
+    const num = Number.parseFloat(s);
+    if (!Number.isFinite(num)) return { ok: false, message: messages.invalid };
+    const hz = Math.round(kHz ? num * 1000 : num);
+    if (hz < BAND_FREQ_MIN || hz > BAND_FREQ_MAX) {
+      return { ok: false, message: messages.outOfRange };
+    }
+    return { ok: true, value: hz };
+  }
+
+  if (kind === "gain") {
+    const s = trimmed.replace(/\s*dB\s*$/i, "").trim();
+    const num = Number.parseFloat(s);
+    if (!Number.isFinite(num)) return { ok: false, message: messages.invalid };
+    const gain = Number(num.toFixed(1));
+    if (gain < BAND_GAIN_MIN || gain > BAND_GAIN_MAX) {
+      return { ok: false, message: messages.outOfRange };
+    }
+    return { ok: true, value: gain };
+  }
+
+  const num = Number.parseFloat(trimmed);
+  if (!Number.isFinite(num)) return { ok: false, message: messages.invalid };
+  const q = Number(num.toFixed(2));
+  if (q < BAND_Q_MIN || q > BAND_Q_MAX) {
+    return { ok: false, message: messages.outOfRange };
+  }
+  return { ok: true, value: q };
+}
+
+export function normalizeFilterType(type: string | number | undefined): string {
+  if (type === undefined || type === null) return "PEAK";
+  if (typeof type === "number") {
+    switch (type) {
+      case 0:
+        return "LPF";
+      case 1:
+        return "HPF";
+      case 2:
+        return "BPF";
+      case 3:
+        return "NOTCH";
+      case 4:
+        return "PEAK";
+      case 5:
+        return "LSHELF";
+      case 6:
+        return "HSHELF";
+      case 7:
+        return "APF";
+      default:
+        return "PEAK";
+    }
+  }
+  return getFilterShortName(type);
+}
+
+export function freqLabel(f: number) {
+  return f >= 1000 ? `${(f / 1000).toFixed(1)}K` : `${f}`;
+}

client/src/pages/eq/peqMappers.ts

@@ -0,0 +1,41 @@
+import { getFilterType } from "@/lib/peqAudio";
+import type { PeqFilter, PeqState } from "@/lib/luxsinApi";
+import type { EqBand } from "./types";
+
+export function cloneBands(source: EqBand[]) {
+  return source.map((band) => ({ ...band }));
+}
+
+export function buildPeqCatalogSyncKey(
+  remote: Pick<PeqState, "peq" | "peqSelect"> | null | undefined,
+  devicePeqSelect?: number,
+): string {
+  const items = remote?.peq;
+  if (!items?.length) return items ? "empty" : "";
+  const select = devicePeqSelect ?? remote?.peqSelect ?? 0;
+  return `${select}|${items.map((p) => p.name).join("\u0001")}`;
+}
+
+export function getUniquePresetName(base: string, existingNames: string[]) {
+  if (!existingNames.includes(base)) return base;
+  let index = 1;
+  while (existingNames.includes(`${base}_${index}`)) {
+    index += 1;
+  }
+  return `${base}_${index}`;
+}
+
+/** UI band row → device `PeqFilter` (fc + numeric type), same as legacy `getFilterVal` mapping via `getFilterType`. */
+export function bandToPeqFilter(b: {
+  freq: number;
+  gain: number;
+  q: number;
+  type: string | number;
+}): PeqFilter {
+  return {
+    fc: b.freq,
+    gain: b.gain,
+    q: b.q,
+    type: getFilterType(b.type),
+  };
+}

client/src/pages/eq/types.ts

@@ -0,0 +1,22 @@
+import type { PeqState } from "@/lib/luxsinApi";
+import type localeZh from "@/locales/data-zh.json";
+
+export type PeqEqUi = NonNullable<NonNullable<(typeof localeZh)["peq"]>["eqUi"]>;
+
+export type BandParamKind = "freq" | "gain" | "q";
+
+export type EqBand = {
+  freq: number;
+  gain: number;
+  q: number;
+  type: string;
+  enabled: boolean;
+};
+
+export type PeqCatalogItem = NonNullable<PeqState["peq"]>[number];
+
+export type CatalogTarget = {
+  name: string;
+  bassBoost: { fc: number; q: number; gain: number };
+  ear: "in" | "over" | "all";
+};

vite.config.ts

@@ -183,6 +183,7 @@ export default defineConfig({
       "@shared": path.resolve(import.meta.dirname, "shared"),
       "@assets": path.resolve(import.meta.dirname, "attached_assets"),
     },
+    dedupe: ["react", "react-dom"],
   },
   envDir: path.resolve(import.meta.dirname),
   root: path.resolve(import.meta.dirname, "client"),
@@ -207,36 +208,9 @@ export default defineConfig({
       output: {
         manualChunks(id) {
           if (!id.includes("node_modules")) return;
-
+          // Only split echarts (lazy EQ page). Do not manually chunk react, radix, lucide,
-          if (id.includes("node_modules/react/") || id.includes("node_modules/react-dom/")) {
+          // or ai-markdown — forced splits hoist shared helpers and break React.forwardRef.
-            return "react-vendor";
+          if (id.includes("/echarts/")) return "echarts-vendor";
-          }
-          if (id.includes("node_modules/wouter/")) {
-            return "router-vendor";
-          }
-          if (id.includes("node_modules/echarts/")) return "echarts-vendor";
-          if (id.includes("node_modules/recharts/")) return "recharts-vendor";
-          if (id.includes("node_modules/framer-motion/")) return "motion-vendor";
-          if (id.includes("node_modules/@radix-ui/")) return "radix-vendor";
-
-          // streamdown + shiki + mermaid (lazy-loaded with AIPage)
-          if (
-            id.includes("streamdown") ||
-            id.includes("@shikijs/") ||
-            id.includes("/shiki/") ||
-            id.includes("mermaid")
-          ) {
-            return "ai-markdown-vendor";
-          }
-
-          if (
-            id.includes("node_modules/lucide-react/") ||
-            id.includes("node_modules/class-variance-authority/") ||
-            id.includes("node_modules/clsx/") ||
-            id.includes("node_modules/tailwind-merge/")
-          ) {
-            return "ui-vendor";
-          }
         },
       },
     },