feat(api): onboarding API (MS22-P1e) (#612)

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

apps/api/src/onboarding/onboarding.controller.ts

@@ -0,0 +1,63 @@
+import { Body, Controller, Get, HttpCode, HttpStatus, Post, UseGuards } from "@nestjs/common";
+import {
+  AddProviderDto,
+  ConfigureOidcDto,
+  CreateBreakglassDto,
+  TestProviderDto,
+} from "./onboarding.dto";
+import { OnboardingGuard } from "./onboarding.guard";
+import { OnboardingService } from "./onboarding.service";
+
+@Controller("onboarding")
+export class OnboardingController {
+  constructor(private readonly onboardingService: OnboardingService) {}
+
+  // GET /api/onboarding/status — returns { completed: boolean }
+  @Get("status")
+  async status(): Promise<{ completed: boolean }> {
+    return {
+      completed: await this.onboardingService.isCompleted(),
+    };
+  }
+
+  // POST /api/onboarding/breakglass — body: { username, password } → create admin
+  @Post("breakglass")
+  @UseGuards(OnboardingGuard)
+  async createBreakglass(
+    @Body() body: CreateBreakglassDto
+  ): Promise<{ id: string; username: string }> {
+    return this.onboardingService.createBreakglassUser(body.username, body.password);
+  }
+
+  // POST /api/onboarding/oidc — body: { issuerUrl, clientId, clientSecret } → save OIDC
+  @Post("oidc")
+  @UseGuards(OnboardingGuard)
+  @HttpCode(HttpStatus.NO_CONTENT)
+  async configureOidc(@Body() body: ConfigureOidcDto): Promise<void> {
+    await this.onboardingService.configureOidc(body.issuerUrl, body.clientId, body.clientSecret);
+  }
+
+  // POST /api/onboarding/provider — body: { name, displayName, type, baseUrl?, apiKey?, models? } → add provider
+  @Post("provider")
+  @UseGuards(OnboardingGuard)
+  async addProvider(@Body() body: AddProviderDto): Promise<{ id: string }> {
+    const userId = await this.onboardingService.getBreakglassUserId();
+
+    return this.onboardingService.addProvider(userId, body);
+  }
+
+  // POST /api/onboarding/provider/test — body: { type, baseUrl?, apiKey? } → test connection
+  @Post("provider/test")
+  @UseGuards(OnboardingGuard)
+  async testProvider(@Body() body: TestProviderDto): Promise<{ success: boolean; error?: string }> {
+    return this.onboardingService.testProvider(body.type, body.baseUrl, body.apiKey);
+  }
+
+  // POST /api/onboarding/complete — mark done
+  @Post("complete")
+  @UseGuards(OnboardingGuard)
+  @HttpCode(HttpStatus.NO_CONTENT)
+  async complete(): Promise<void> {
+    await this.onboardingService.complete();
+  }
+}