新增: 音频可视化壁纸主题（WASAPI+FFT+Canvas）

settings.go

@@ -81,6 +81,7 @@ var themeNames = []struct {
 	{ThemeParticle, "粒子"},
 	{ThemeFractal, "极光流体"},
 	{ThemeText, "文字"},
+	{ThemeAudioViz, "音频可视化"},
 }
 
 func refreshVisibleCards(cfg, oldCfg *Config) {
@@ -198,6 +199,10 @@ func openSettingsWindow() {
 				"photoCard":        !cfg.HidePhoto,
 				"photoFrameMode":   cfg.PhotoFrameMode,
 				"autoStart":        isAutoStartEnabled(),
+				"audioVizStyle":    cfg.AudioVizStyle,
+				"audioSensitivity": cfg.AudioSensitivity,
+				"audioSmoothing":   cfg.AudioSmoothing,
+				"audioColorScheme": cfg.AudioColorScheme,
 			})
 			return string(data)
 		})
@@ -492,6 +497,43 @@ func openSettingsWindow() {
 			return ""
 		})
 
+		w.Bind("saveAudioVizStyle", func(style string) string {
+			cfg := loadConfig()
+			cfg.AudioVizStyle = style
+			saveConfig(cfg)
+			if cfg.Theme == ThemeAudioViz {
+				evalJS(fmt.Sprintf(`window.__audioVizStyle=%q; if(window.setAudioVizStyle) setAudioVizStyle(%q)`, style, style))
+			}
+			return ""
+		})
+
+		w.Bind("saveAudioSensitivity", func(val float64) string {
+			cfg := loadConfig()
+			cfg.AudioSensitivity = val
+			saveConfig(cfg)
+			if cfg.Theme == ThemeAudioViz {
+				evalJS(fmt.Sprintf(`window.__audioVizSensitivity=%f; if(window.setAudioSensitivity) setAudioSensitivity(%f)`, val, val))
+			}
+			return ""
+		})
+
+		w.Bind("saveAudioSmoothing", func(val float64) string {
+			cfg := loadConfig()
+			cfg.AudioSmoothing = val
+			saveConfig(cfg)
+			return ""
+		})
+
+		w.Bind("saveAudioColorScheme", func(scheme string) string {
+			cfg := loadConfig()
+			cfg.AudioColorScheme = scheme
+			saveConfig(cfg)
+			if cfg.Theme == ThemeAudioViz {
+				evalJS(fmt.Sprintf(`window.__audioVizColors=%q; if(window.setAudioColorScheme) setAudioColorScheme(%q)`, scheme, scheme))
+			}
+			return ""
+		})
+
 		w.SetHtml(settingsHTML)
 
 		hwnd := uintptr(w.Window())