feat: Add missing Quote module - model, controller and frontend pages

Feature Description

The Quote module is referenced throughout the codebase (routes.jsx, QuoteModule frontend) but the actual implementation is missing:

• No Quote MongoDB model
• No Quote controller
• No Quote frontend pages

This causes app crash on fresh install.

Solution

Implemented the complete Quote module:

Backend

• Added backend/src/models/appModels/Quote.js - MongoDB schema
• Added backend/src/controllers/appControllers/quoteController/
  • create.js, read.js, update.js, remove.js, paginatedList.js, index.js

Frontend

• Added frontend/src/pages/Quote/index.jsx - List page
• Added frontend/src/pages/Quote/QuoteCreate.jsx
• Added frontend/src/pages/Quote/QuoteRead.jsx
• Added frontend/src/pages/Quote/QuoteUpdate.jsx

Testing

1. Fresh clone + setup
2. npm run dev (backend + frontend)
3. Login → navigate to /quote/create
4. Quote form loads and works correctly

Environment

• Node.js v24.12.0
• OS: Windows 11