feat(30-01): create onboarding route with Zod validation and register

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/server/routes/onboarding.ts

@@ -0,0 +1,24 @@
+import { Hono } from "hono";
+import { zValidator } from "@hono/zod-validator";
+import { completeOnboardingSchema } from "../../shared/schemas.ts";
+import { completeOnboarding } from "../services/onboarding.service.ts";
+
+type Env = { Variables: { db?: any; userId?: number } };
+
+const app = new Hono<Env>();
+
+// POST /api/onboarding/complete
+app.post(
+	"/complete",
+	zValidator("json", completeOnboardingSchema),
+	async (c) => {
+		const database = c.get("db");
+		const userId = c.get("userId")!;
+		const { globalItemIds } = c.req.valid("json");
+
+		const result = await completeOnboarding(database, userId, globalItemIds);
+		return c.json(result);
+	},
+);
+
+export { app as onboardingRoutes };