新增: 音频可视化壁纸主题（WASAPI+FFT+Canvas）

wallpaper.go

@@ -33,6 +33,9 @@ var themeFractal string
 //go:embed web/themes/text.html
 var themeText string
 
+//go:embed web/themes/audio-viz.html
+var themeAudioViz string
+
 var themeMap = map[ThemeName]string{
 	ThemeAurora:   themeAurora,
 	ThemeStar:     themeStarfield,
@@ -40,6 +43,7 @@ var themeMap = map[ThemeName]string{
 	ThemeParticle: themeParticles,
 	ThemeFractal:  themeFractal,
 	ThemeText:     themeText,
+	ThemeAudioViz: themeAudioViz,
 }
 
 func buildWallpaperHTML(cfg *Config) string {
@@ -88,6 +92,14 @@ func buildWallpaperHTML(cfg *Config) string {
 		inject += fmt.Sprintf(`<script>window.wallpaperText=%s;</script>`, string(escaped))
 	}
 
+	// 注入音频可视化配置
+	if cfg.WallpaperType == WPTheme && cfg.Theme == ThemeAudioViz {
+		inject += fmt.Sprintf(
+			`<script>window.__audioVizStyle=%q;window.__audioVizSensitivity=%f;window.__audioVizColors=%q;</script>`,
+			cfg.AudioVizStyle, cfg.AudioSensitivity, cfg.AudioColorScheme,
+		)
+	}
+
 	return strings.Replace(overlayHTML, "</head>", inject+"</head>", 1)
 }
 
@@ -118,6 +130,17 @@ func reloadWallpaper() {
 	}
 	cfg := loadConfig()
 
+	// 音频捕获生命周期
+	if cfg.WallpaperType == WPTheme && cfg.Theme == ThemeAudioViz {
+		if !audioActiveState() {
+			startAudioCapture()
+		}
+	} else {
+		if audioActiveState() {
+			stopAudioCapture()
+		}
+	}
+
 	// 非主题壁纸切换：仅替换 #bg-layer，不销毁卡片状态
 	if cfg.WallpaperType != WPTheme {
 		updateBackground(cfg)