sendPayload: explicit text fallback in text-only path

extensions/zalo/src/channel.ts

@@ -323,7 +323,7 @@ export const zaloPlugin: ChannelPlugin<ResolvedZaloAccount> = {
         }
         return lastResult;
       }
-      return zaloPlugin.outbound!.sendText!({ ...ctx });
+      return zaloPlugin.outbound!.sendText!({ ...ctx, text: ctx.payload.text ?? "" });
     },
     sendText: async ({ to, text, accountId, cfg }) => {
       const result = await sendMessageZalo(to, text, {

extensions/zalouser/src/channel.ts

@@ -539,7 +539,7 @@ export const zalouserPlugin: ChannelPlugin<ResolvedZalouserAccount> = {
         }
         return lastResult;
       }
-      return zalouserPlugin.outbound!.sendText!({ ...ctx });
+      return zalouserPlugin.outbound!.sendText!({ ...ctx, text: ctx.payload.text ?? "" });
     },
     sendText: async ({ to, text, accountId, cfg }) => {
       const account = resolveZalouserAccountSync({ cfg: cfg, accountId });

src/channels/plugins/outbound/direct-text-media.ts

@@ -112,7 +112,7 @@ export function createDirectTextMediaOutbound<
         }
         return lastResult;
       }
-      return outbound.sendText!({ ...ctx });
+      return outbound.sendText!({ ...ctx, text: ctx.payload.text ?? "" });
     },
     sendText: async ({ cfg, to, text, accountId, deps, replyToId }) => {
       return await sendDirect({

src/channels/plugins/outbound/discord.ts

@@ -101,7 +101,7 @@ export const discordOutbound: ChannelOutboundAdapter = {
       }
       return lastResult;
     }
-    return discordOutbound.sendText!({ ...ctx });
+    return discordOutbound.sendText!({ ...ctx, text: ctx.payload.text ?? "" });
   },
   sendText: async ({ to, text, accountId, deps, replyToId, threadId, identity, silent }) => {
     if (!silent) {

src/channels/plugins/outbound/slack.ts

@@ -114,7 +114,7 @@ export const slackOutbound: ChannelOutboundAdapter = {
       }
       return lastResult;
     }
-    return slackOutbound.sendText!({ ...ctx });
+    return slackOutbound.sendText!({ ...ctx, text: ctx.payload.text ?? "" });
   },
   sendText: async ({ to, text, accountId, deps, replyToId, threadId, identity }) => {
     return await sendSlackOutboundMessage({

src/channels/plugins/outbound/whatsapp.ts

@@ -33,7 +33,7 @@ export const whatsappOutbound: ChannelOutboundAdapter = {
       }
       return lastResult;
     }
-    return whatsappOutbound.sendText!({ ...ctx });
+    return whatsappOutbound.sendText!({ ...ctx, text: ctx.payload.text ?? "" });
   },
   sendText: async ({ to, text, accountId, deps, gifPlayback }) => {
     const send =