Add command to set display name for main bot in AS mode (#1103)

.changeset/brave-carrots-draw.md

@@ -0,0 +1,5 @@
+---
+"draupnir": patch
+---
+
+Add set display name command to appservice main bot.

apps/draupnir/src/appservice/bot/AppserviceBotCommands.ts

@@ -20,12 +20,14 @@ import {
 } from "./ListCommand";
 import { AppserviceProvisionForUserCommand } from "./ProvisionCommand";
 import { AppserviceVersionCommand } from "./VersionCommand";
+import { AppserviceDisplaynameCommand } from "./DisplaynameCommand";
 
 AppserviceBotCommands.internCommand(AppserviceBotHelpCommand, ["admin", "help"])
   .internCommand(AppserviceAllowCommand, ["admin", "allow"])
   .internCommand(AppserviceRemoveCommand, ["admin", "remove"])
   .internCommand(AppserviceProvisionForUserCommand, ["admin", "provision"])
   .internCommand(AppserviceVersionCommand, ["admin", "version"])
+  .internCommand(AppserviceDisplaynameCommand, ["admin", "displayname"])
   .internCommand(AppserviceRestartDraupnirCommand, ["admin", "restart"])
   .internCommand(AppserviceListUnstartedCommand, [
     "admin",

apps/draupnir/src/appservice/bot/DisplaynameCommand.tsx

@@ -0,0 +1,42 @@
+// SPDX-FileCopyrightText: 2026 Catalan Lover <catalanlover@protonmail.com>
+//
+// SPDX-License-Identifier: Apache-2.0
+
+import { AppserviceAdaptorContext } from "./AppserviceBotPrerequisite";
+import { ActionResult, isError, Ok } from "matrix-protection-suite";
+import {
+  StringPresentationType,
+  describeCommand,
+} from "@the-draupnir-project/interface-manager";
+import { AppserviceBotInterfaceAdaptor } from "./AppserviceBotInterfaceAdaptor";
+import { resultifyBotSDKRequestError } from "matrix-protection-suite-for-matrix-bot-sdk";
+
+export const AppserviceDisplaynameCommand = describeCommand({
+  summary: "Sets the displayname of the main appservice admin bot.",
+  parameters: [],
+  rest: {
+    name: "displayname",
+    acceptor: StringPresentationType,
+  },
+  async executor(
+    context: AppserviceAdaptorContext,
+    _info,
+    _keywords,
+    displaynameParts
+  ): Promise<ActionResult<void>> {
+    const displayname = displaynameParts.join(" ");
+    const setDisplaynameResult = await context.client
+      .setDisplayName(displayname)
+      .then((_) => Ok(undefined), resultifyBotSDKRequestError);
+    if (isError(setDisplaynameResult)) {
+      return setDisplaynameResult.elaborate(
+        `Failed to set appservice bot displayname to ${displayname}`
+      );
+    }
+    return setDisplaynameResult;
+  },
+});
+
+AppserviceBotInterfaceAdaptor.describeRenderer(AppserviceDisplaynameCommand, {
+  isAlwaysSupposedToUseDefaultRenderer: true,
+});