feat(guild): GET /channels/:id/members

List explicit channel members (userIds) for the split members sidebar.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/channels/channels.controller.ts

@@ -34,6 +34,13 @@ export class ChannelsController {
     );
   }
 
+  @Get(':id/members')
+  members(@Req() req: AuthedRequest, @Param('id') channelId: string) {
+    const userId = req.userId ?? '';
+    if (!userId) throw new UnauthorizedException('missing user');
+    return this.channelsService.channelMembers(channelId);
+  }
+
   @Post(':id/join')
   join(@Req() req: AuthedRequest, @Param('id') channelId: string) {
     const userId = req.userId ?? '';

src/channels/channels.service.ts

@@ -56,6 +56,14 @@ export class ChannelsService {
       .map((c) => ({ ...c, isMember: memberChannelIds.has(c.id) }));
   }
 
+  async channelMembers(channelId: string): Promise<{ userId: string }[]> {
+    const rows = await this.memberRepo.find({
+      where: { channelId },
+      order: { createdAt: 'ASC' },
+    });
+    return rows.map((r) => ({ userId: r.userId }));
+  }
+
   async joinChannel(channelId: string, userId: string) {
     const channel = await this.channelRepo.findOne({ where: { id: channelId } });
     if (!channel) throw new NotFoundException('channel not found');