Build CodeLeads: a members-only web app where developers pay to access a curated feed of software project leads. Users should be able to sign up, manage a profile, choose from tiered monthly/annual plans, and have access controlled by their plan (which leads they can view and how many applications they can send). Provide a clean dashboard to browse, search and filter leads, plus an apply flow that captures a short pitch and notifies the lead contact. Include an account area with invoices and payment methods. Subscriptions and payments must run through Stripe Billing (trials, upgrades/downgrades, proration, SCA). Invoices must be created with Stripe Invoicing and automatically include VAT/GST via Stripe Tax based on the customer’s location. Admins need simple tools to publish leads and see basic metrics. Use Next.js and set up secure webhook handling. Deliver production-ready auth, subscription gating, the leads dashboard and apply flow, and automated invoicing/tax.