add web (launcher)

web/backend/api/channels.go

@@ -29,6 +29,7 @@ var channelCatalog = []channelCatalogItem{
 	{Name: "maixcam", ConfigKey: "maixcam"},
 	{Name: "matrix", ConfigKey: "matrix"},
 	{Name: "irc", ConfigKey: "irc"},
+	{Name: "mqtt", ConfigKey: "mqtt"},
 }
 
 // registerChannelRoutes binds read-only channel catalog endpoints to the ServeMux.

web/backend/api/config.go

@@ -189,6 +189,19 @@ func validateConfig(cfg *config.Config) []string {
 		errs = append(errs, "channels.discord.token is required when discord channel is enabled")
 	}
 
+	// MQTT: broker and client_id required when enabled
+	if cfg.Channels.MQTT.Enabled {
+		if cfg.Channels.MQTT.Broker == "" {
+			errs = append(errs, "channels.mqtt.broker is required when mqtt channel is enabled")
+		}
+		if cfg.Channels.MQTT.ClientID == "" {
+			errs = append(errs, "channels.mqtt.client_id is required when mqtt channel is enabled")
+		}
+		if len(cfg.Channels.MQTT.SubscribeTopics) == 0 {
+			errs = append(errs, "channels.mqtt.subscribe_topics is required when mqtt channel is enabled")
+		}
+	}
+
 	if cfg.Tools.Exec.Enabled {
 		if cfg.Tools.Exec.EnableDenyPatterns {
 			errs = append(

web/frontend/src/components/channels/channel-config-page.tsx

@@ -166,6 +166,8 @@ function isConfigured(
       )
     case "irc":
       return asString(config.server) !== ""
+    case "mqtt":
+      return asString(config.broker) !== "" && asString(config.client_id) !== ""
     default:
       return false
   }
@@ -205,6 +207,8 @@ function getRequiredFieldKeys(channelName: string): string[] {
       return ["homeserver", "user_id", "access_token"]
     case "irc":
       return ["server"]
+    case "mqtt":
+      return ["broker", "client_id", "subscribe_topics"]
     default:
       return []
   }

web/frontend/src/components/channels/channel-forms/generic-form.tsx

@@ -31,6 +31,9 @@ const SECRET_FIELDS = new Set([
   "password",
   "nickserv_password",
   "sasl_password",
+  "tls_ca",
+  "tls_cert",
+  "tls_key",
 ])
 
 // Fields to skip in the generic form (handled by enabled toggle or internal).
@@ -139,6 +142,15 @@ export function GenericForm({
       channels: t("channels.form.desc.channels"),
       request_caps: t("channels.form.desc.requestCaps"),
       max_base64_file_size_mib: t("channels.form.desc.maxBase64FileSizeMiB"),
+      broker: t("channels.form.desc.broker"),
+      subscribe_topics: t("channels.form.desc.subscribeTopics"),
+      subscribe_json_key: t("channels.form.desc.subscribeJsonKey"),
+      reply_topic: t("channels.form.desc.replyTopic"),
+      reply_json_key: t("channels.form.desc.replyJsonKey"),
+      qos: t("channels.form.desc.qos"),
+      retain: t("channels.form.desc.retain"),
+      prefix: t("channels.form.desc.prefix"),
+      instruction: t("channels.form.desc.instruction"),
     }
     return (
       descriptions[key] ??

web/frontend/src/hooks/use-sidebar-channels.ts

@@ -44,6 +44,7 @@ const CHANNEL_IMPORTANCE_ORDER = [
   "pico",
   "maixcam",
   "irc",
+  "mqtt",
   "whatsapp",
   "whatsapp_native",
 ]

web/frontend/src/i18n/locales/en.json

@@ -240,7 +240,8 @@
       "pico": "Web",
       "maixcam": "MaixCam",
       "matrix": "Matrix",
-      "irc": "IRC"
+      "irc": "IRC",
+      "mqtt": "MQTT"
     },
     "field": {
       "token": "Bot Token",
@@ -328,6 +329,15 @@
         "channels": "IRC channels to join.",
         "requestCaps": "IRC capability list requested on connect.",
         "maxBase64FileSizeMiB": "Maximum size in MiB for converting local files to base64 before upload. 0 means unlimited. Applies only to local files, not URL uploads.",
+        "broker": "MQTT broker URL (e.g. tcp://broker.emqx.io:1883).",
+        "subscribeTopics": "MQTT topics to subscribe to, separated by commas.",
+        "subscribeJsonKey": "JSON key to extract from incoming messages. Leave empty to use raw payload.",
+        "replyTopic": "Default topic for publishing replies.",
+        "replyJsonKey": "JSON key to wrap reply content. Leave empty to send plain text.",
+        "qos": "Quality of Service level (0, 1, or 2).",
+        "retain": "Whether to retain published messages on the broker.",
+        "prefix": "URL prefix for the channel.",
+        "instruction": "System instruction prepended to incoming messages.",
         "genericField": "Used to configure {{field}}."
       }
     },

web/frontend/src/i18n/locales/zh.json

@@ -240,7 +240,8 @@
       "pico": "Web",
       "maixcam": "MaixCam",
       "matrix": "Matrix",
-      "irc": "IRC"
+      "irc": "IRC",
+      "mqtt": "MQTT"
     },
     "field": {
       "token": "Bot Token",
@@ -328,6 +329,15 @@
         "channels": "要加入的 IRC 频道列表。",
         "requestCaps": "连接时请求的 IRC 扩展能力列表。",
         "maxBase64FileSizeMiB": "本地文件转为 base64 上传的最大体积，单位 MiB；0 表示不限制，仅影响本地文件，不影响 URL 直传。",
+        "broker": "MQTT 代理地址（例如 tcp://broker.emqx.io:1883）。",
+        "subscribeTopics": "要订阅的 MQTT 主题，多个值用逗号分隔。",
+        "subscribeJsonKey": "从接收消息中提取的 JSON 键名。留空则使用原始内容。",
+        "replyTopic": "发布回复的默认主题。",
+        "replyJsonKey": "用于包装回复内容的 JSON 键名。留空则发送纯文本。",
+        "qos": "服务质量等级（0、1 或 2）。",
+        "retain": "是否在代理上保留已发布的消息。",
+        "prefix": "频道 URL 前缀。",
+        "instruction": "附加到接收消息前的系统指令。",
         "genericField": "用于配置{{field}}。"
       }
     },