feat: @mosaic/coord — migrate from v0, gateway integration (P2-005) (#77)

Co-authored-by: Jason Woltje <jason@diversecanvas.com>
Co-committed-by: Jason Woltje <jason@diversecanvas.com>

apps/gateway/src/coord/coord.controller.ts

@@ -0,0 +1,31 @@
+import { Controller, Get, NotFoundException, Param, Query, UseGuards } from '@nestjs/common';
+import { AuthGuard } from '../auth/auth.guard.js';
+import { CoordService } from './coord.service.js';
+
+@Controller('api/coord')
+@UseGuards(AuthGuard)
+export class CoordController {
+  constructor(private readonly coordService: CoordService) {}
+
+  @Get('status')
+  async missionStatus(@Query('projectPath') projectPath?: string) {
+    const resolvedPath = projectPath ?? process.cwd();
+    const status = await this.coordService.getMissionStatus(resolvedPath);
+    if (!status) throw new NotFoundException('No active coord mission found');
+    return status;
+  }
+
+  @Get('tasks')
+  async listTasks(@Query('projectPath') projectPath?: string) {
+    const resolvedPath = projectPath ?? process.cwd();
+    return this.coordService.listTasks(resolvedPath);
+  }
+
+  @Get('tasks/:taskId')
+  async taskStatus(@Param('taskId') taskId: string, @Query('projectPath') projectPath?: string) {
+    const resolvedPath = projectPath ?? process.cwd();
+    const detail = await this.coordService.getTaskStatus(resolvedPath, taskId);
+    if (!detail) throw new NotFoundException(`Task ${taskId} not found in coord mission`);
+    return detail;
+  }
+}