feat: implement privacy-aware profile visibility and activity status filtering using optional authentication guard

src/agents/agents.controller.ts

@@ -7,6 +7,7 @@ import {
   Body,
   Param,
   Query,
+  Req,
   UseGuards,
   ParseUUIDPipe,
 } from '@nestjs/common';
@@ -25,6 +26,7 @@ import {
 } from './dto';
 import { JwtAuthGuard } from '../auth/guards/jwt-auth.guard';
 import { RolesGuard } from '../auth/guards/roles.guard';
+import { OptionalAuthGuard } from '../auth/guards/optional-auth.guard';
 import { Roles } from '../auth/decorators/roles.decorator';
 import { Public } from '../auth/decorators/public.decorator';
 import { CurrentUser } from '../auth/decorators/current-user.decorator';
@@ -243,11 +245,13 @@ export class AgentsController {
   // Public parameterized routes - MUST come after specific routes like profile/*
   @Get(':id')
   @Public()
+  @UseGuards(OptionalAuthGuard)
   @ApiOperation({ summary: 'Get agent profile by ID' })
   @ApiResponse({ status: 200, description: 'Agent profile retrieved successfully' })
   @ApiResponse({ status: 404, description: 'Agent profile not found' })
-  async getAgentById(@Param('id', ParseUUIDPipe) id: string) {
-    return this.agentsService.getProfileById(id);
+  async getAgentById(@Param('id', ParseUUIDPipe) id: string, @Req() req: any) {
+    const requestingUserId = req.user?.id || null;
+    return this.agentsService.getProfileById(id, requestingUserId);
   }
 
   @Get(':id/field-values')