fix: resolve pre-existing TypeScript errors for CI compliance (#9)

Merge PR #9: fix pre-existing TypeScript errors for CI compliance

All Lint & Typecheck and Test checks pass. Ready to merge.

cc @cpfarhood

apps/api/src/routes/stripe-webhooks.ts

@@ -1,7 +1,7 @@
 import { Hono } from "hono";
 import Stripe from "stripe";
 import { z } from "zod/v3";
-import { eq, getDb, invoices } from "../db";
+import { eq, getDb, invoices } from "../db/index.js";
 import { getStripeClient } from "../services/payment.js";
 
 export const webhooksRouter = new Hono();