Add notification reactive color strip source with webhook trigger

New source_type "notification" fires one-shot visual effects (flash, pulse, sweep)
triggered via POST webhook. Designed as a composite layer for overlay on persistent
sources. Includes app color mapping, whitelist/blacklist filtering, and auto-sizing.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/src/wled_controller/static/locales/zh.json

@@ -808,6 +808,33 @@
   "color_strip.api_input.endpoints": "推送端点：",
   "color_strip.api_input.endpoints.hint": "使用这些 URL 从外部应用程序推送 LED 颜色数据。REST 接受 JSON，WebSocket 接受 JSON 和原始二进制帧。",
   "color_strip.api_input.save_first": "请先保存源以查看推送端点 URL。",
+  "color_strip.type.notification": "通知",
+  "color_strip.type.notification.hint": "通过 Webhook 触发时显示一次性视觉效果（闪烁、脉冲、扫描）。设计为组合源中的叠加层。",
+  "color_strip.notification.effect": "效果：",
+  "color_strip.notification.effect.hint": "通知触发时的视觉效果。闪烁线性衰减，脉冲平滑钟形曲线，扫描从左到右填充后衰减。",
+  "color_strip.notification.effect.flash": "闪烁",
+  "color_strip.notification.effect.pulse": "脉冲",
+  "color_strip.notification.effect.sweep": "扫描",
+  "color_strip.notification.duration": "持续时间（毫秒）：",
+  "color_strip.notification.duration.hint": "通知效果播放的时长（毫秒）。",
+  "color_strip.notification.default_color": "默认颜色：",
+  "color_strip.notification.default_color.hint": "当通知没有应用特定颜色映射时使用的颜色。",
+  "color_strip.notification.filter_mode": "应用过滤：",
+  "color_strip.notification.filter_mode.hint": "按应用名称过滤通知。关闭=接受全部，白名单=仅列出的应用，黑名单=排除列出的应用。",
+  "color_strip.notification.filter_mode.off": "关闭",
+  "color_strip.notification.filter_mode.whitelist": "白名单",
+  "color_strip.notification.filter_mode.blacklist": "黑名单",
+  "color_strip.notification.filter_list": "应用列表：",
+  "color_strip.notification.filter_list.hint": "以逗号分隔的应用名称。",
+  "color_strip.notification.filter_list.placeholder": "Discord, Slack, Telegram",
+  "color_strip.notification.app_colors": "应用颜色",
+  "color_strip.notification.app_colors.label": "颜色映射：",
+  "color_strip.notification.app_colors.hint": "每个应用的自定义通知颜色。每行将一个应用名称映射到特定颜色。",
+  "color_strip.notification.app_colors.add": "+ 添加映射",
+  "color_strip.notification.endpoint": "Webhook 端点：",
+  "color_strip.notification.endpoint.hint": "使用此 URL 从外部系统触发通知。POST 请求可选 JSON：{\"app\": \"AppName\", \"color\": \"#FF0000\"}。",
+  "color_strip.notification.save_first": "请先保存源以查看 Webhook 端点 URL。",
+  "color_strip.notification.app_count": "个应用",
   "color_strip.composite.layers": "图层：",
   "color_strip.composite.layers.hint": "叠加多个色带源。第一个图层在底部，最后一个在顶部。每个图层可以有自己的混合模式和不透明度。",
   "color_strip.composite.add_layer": "+ 添加图层",