Can I vibecode Teamwork?

Build me a self-hosted client-work tracker for a small agency to replace Teamwork. Requirements:

- Node.js 22 + TypeScript: a Fastify API and a React front end built with Vite. `npm start` builds
  the UI and serves everything on http://localhost:4810.
- Storage: better-sqlite3 in ./data/work.db. Clients own projects, projects hold task lists, lists
  hold tasks. A task has Markdown notes, one assignee, start and due dates, an estimate in minutes,
  subtasks, tags and "blocked by" links.
- Views per project: list, board and a Gantt drawn with frappe-gantt that shows dependencies. A
  My Work page lists everything assigned to me, sorted by due date.
- Time: a start/stop timer on every task, manual entries, a billable flag, an hourly rate per
  person and per client, and a weekly timesheet that someone approves before it locks.
- Budgets and billing: a project has a fixed budget or a monthly retainer, in hours or money,
  and shows burn against it with a warning at 80%. "Create invoice" turns unbilled billable time
  into a PDF (`pdfkit`) with margin and tax lines and marks those entries as invoiced.
- Templates and intake: save a project as a template and create a copy with dates shifted from a
  chosen start; a public request form per client (honeypot field, rate limit) adds a task to
  that client's request list.
- People are added with `npm run user:add <email>`; argon2 hashes, signed-cookie sessions; email
  through nodemailer (SMTP in .env) on assignment. No telemetry, local-first.
- Out of scope: client logins and file proofing, chat, capacity planning across people,
  QuickBooks or HubSpot sync, mobile apps, AI features.
- README: setup, backing up ./data, and importing tasks and time entries from CSV.

Opens your agent with the prompt filled in, you press enter. Or copy it and paste it into an empty folder.