fix: honor mattermost action discovery account config

extensions/mattermost/src/channel.test.ts

@@ -43,8 +43,8 @@ type MattermostSendTextParams = Parameters<MattermostSendText>[0];
 type MattermostSendMedia = NonNullable<NonNullable<typeof mattermostPlugin.outbound>["sendMedia"]>;
 type MattermostSendMediaParams = Parameters<MattermostSendMedia>[0];
 
-function getDescribedActions(cfg: OpenClawConfig): string[] {
-  return [...(mattermostPlugin.actions?.describeMessageTool?.({ cfg })?.actions ?? [])];
+function getDescribedActions(cfg: OpenClawConfig, accountId?: string): string[] {
+  return [...(mattermostPlugin.actions?.describeMessageTool?.({ cfg, accountId })?.actions ?? [])];
 }
 
 function requireMattermostNormalizeTarget() {
@@ -292,6 +292,34 @@ describe("mattermostPlugin", () => {
       expect(actions).toContain("react");
     });
 
+    it("honors the selected Mattermost account during discovery", () => {
+      const cfg: OpenClawConfig = {
+        channels: {
+          mattermost: {
+            enabled: true,
+            actions: { reactions: false },
+            accounts: {
+              default: {
+                enabled: true,
+                botToken: "test-token",
+                baseUrl: "https://chat.example.com",
+                actions: { reactions: false },
+              },
+              work: {
+                enabled: true,
+                botToken: "work-token",
+                baseUrl: "https://chat.example.com",
+                actions: { reactions: true },
+              },
+            },
+          },
+        },
+      };
+
+      expect(getDescribedActions(cfg, "default")).toEqual(["send"]);
+      expect(getDescribedActions(cfg, "work")).toEqual(["send", "react"]);
+    });
+
     it("blocks react when default account disables reactions and accountId is omitted", async () => {
       const cfg: OpenClawConfig = {
         channels: {

extensions/mattermost/src/channel.ts

@@ -69,11 +69,17 @@ const mattermostSecurityAdapter = createRestrictSendersChannelSecurity<ResolvedM
 
 function describeMattermostMessageTool({
   cfg,
+  accountId,
 }: Parameters<
   NonNullable<ChannelMessageActionAdapter["describeMessageTool"]>
 >[0]): ChannelMessageToolDiscovery {
-  const enabledAccounts = listMattermostAccountIds(cfg)
-    .map((accountId) => resolveMattermostAccount({ cfg, accountId }))
+  const enabledAccounts = (
+    accountId
+      ? [resolveMattermostAccount({ cfg, accountId })]
+      : listMattermostAccountIds(cfg).map((listedAccountId) =>
+          resolveMattermostAccount({ cfg, accountId: listedAccountId }),
+        )
+  )
     .filter((account) => account.enabled)
     .filter((account) => Boolean(account.botToken?.trim() && account.baseUrl?.trim()));