Zalo: move outbound session routing behind plugin boundary

extensions/zalo/src/channel.ts

@@ -35,6 +35,7 @@ import {
 } from "./accounts.js";
 import { zaloMessageActions } from "./actions.js";
 import { ZaloConfigSchema } from "./config-schema.js";
+import { resolveZaloOutboundSessionRoute } from "./session-route.js";
 import { zaloSetupAdapter } from "./setup-core.js";
 import { zaloSetupWizard } from "./setup-surface.js";
 import { collectZaloStatusIssues } from "./status-issues.js";
@@ -159,6 +160,7 @@ export const zaloPlugin: ChannelPlugin<ResolvedZaloAccount> = {
   actions: zaloMessageActions,
   messaging: {
     normalizeTarget: normalizeZaloMessagingTarget,
+    resolveOutboundSessionRoute: (params) => resolveZaloOutboundSessionRoute(params),
     targetResolver: {
       looksLikeId: isNumericTargetId,
       hint: "<chatId>",

extensions/zalo/src/session-route.ts

@@ -0,0 +1,31 @@
+import {
+  buildChannelOutboundSessionRoute,
+  stripChannelTargetPrefix,
+  stripTargetKindPrefix,
+  type ChannelOutboundSessionRouteParams,
+} from "openclaw/plugin-sdk/core";
+
+export function resolveZaloOutboundSessionRoute(params: ChannelOutboundSessionRouteParams) {
+  const trimmed = stripChannelTargetPrefix(params.target, "zalo", "zl");
+  if (!trimmed) {
+    return null;
+  }
+  const isGroup = trimmed.toLowerCase().startsWith("group:");
+  const peerId = stripTargetKindPrefix(trimmed);
+  if (!peerId) {
+    return null;
+  }
+  return buildChannelOutboundSessionRoute({
+    cfg: params.cfg,
+    agentId: params.agentId,
+    channel: "zalo",
+    accountId: params.accountId,
+    peer: {
+      kind: isGroup ? "group" : "direct",
+      id: peerId,
+    },
+    chatType: isGroup ? "group" : "direct",
+    from: isGroup ? `zalo:group:${peerId}` : `zalo:${peerId}`,
+    to: `zalo:${peerId}`,
+  });
+}