Can I vibecode Plutio?

Build a comprehensive, self-hosted, all-in-one business management and freelance platform inspired by Plutio, designed to consolidate project management, task tracking, CRM, invoicing, time tracking, and client portals into a single, cohesive interface.

Use exactly this stack: Next.js 15 (App Router) + TypeScript + TailwindCSS + SQLite (Prisma ORM).

Core Features & Functional Requirements:
1. **Dashboard & CRM:** Create a unified dashboard displaying active projects, outstanding invoices, and recent client activities. Implement a lightweight CRM to manage client profiles, contact information, and associated projects.
2. **Project & Task Management:** Develop a robust project management module supporting multiple views (Kanban board and list views). Users must be able to create projects, add tasks, subtasks, checklists, set priorities, and assign due dates.
3. **Time Tracking:** Build a built-in time tracker. Users should be able to start/stop a timer linked to specific tasks or manually log hours. Logged time must directly integrate with the invoicing module to generate billable line items.
4. **Invoicing & Proposals:** Implement a feature to generate professional invoices based on logged time or flat-rate projects. Include the ability to create simple proposals and contracts with rich text editing, allowing manual status tracking (e.g., Draft, Sent, Paid/Signed).
5. **Client Portal Simulation:** Create a distinct view representing a "Client Portal" where specific projects, invoices, and files are scoped to a simulated client login, giving a professional space for client interaction.

Technical Constraints & Guidelines:
- Start from an empty folder and create the complete working project.
- Make the default mode single-user for the admin, with read-only scoped views for simulated clients.
- Store all user, project, time, and financial data locally in a SQLite database.
- Do not add analytics, telemetry, ads, or third-party accounts.
- Put every secret and external credential in .env and provide .env.example.
- Use realistic, extensive sample data (clients, projects, tasks, invoices) that is clearly labelled and easy to delete so the app looks alive upon first boot.
- Implement a highly polished, premium, and responsive user interface using TailwindCSS. Use modern design paradigms like subtle shadows, clean typography, and empty/loading states.
- Include clear empty, loading, validation, success, and failure states across all forms and views.
- Add robust import and export capabilities (CSV/JSON) for clients and invoices so the user owns their data.
- Use accessible keyboard navigation, labels, focus states, and sensible contrast.
- Deliberately exclude these paid-product advantages: live bank integrations, real payment gateway routing, and live multi-tenant authentication systems.
- Write focused unit tests for the time-tracking and invoice-generation logic.
- Add one end-to-end smoke test that proves the core project creation and invoicing loop works.
- Create a comprehensive README with setup, architecture, and data backup instructions.
- Add scripts for install, development, test, build, and a production-style local run.
- Run the tests and build before finishing, then fix any errors.