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README.md

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+A monorepo setup to manage both Backend and Frontend of the Dental Manager application.
+
+## Prerequisites
+
+Before running the project, make sure the following are installed on your machine:
+
+- **Node.js** v18+
+- **Python** 3.10+
+- **PostgreSQL** (primary database)
+- **Redis** (job queue for Selenium and OCR tasks)
+
+### Install Node.js (Ubuntu/Debian)
+
+```sh
+curl -fsSL https://deb.nodesource.com/setup_20.x | sudo -E bash -
+sudo apt-get install -y nodejs
+
+# Verify
+node -v   # should print v20.x.x
+npm -v
+```
+
+### Install Python (Ubuntu/Debian)
+
+```sh
+sudo apt-get install -y python3 python3-pip python3-venv
+
+# Verify
+python3 --version   # should print 3.10 or higher
+```
+
+> The Selenium service also requires its Python dependencies. Install them once:
+> ```sh
+> cd apps/SeleniumService
+> pip3 install -r requirements.txt
+> ```
+
+
+### Install PostgreSQL (Ubuntu/Debian)
+
+```sh
+sudo apt-get install -y postgresql postgresql-contrib
+sudo systemctl enable postgresql
+sudo systemctl start postgresql
+
+# Create a database and user (replace with your own values)
+sudo -u postgres psql -c "CREATE USER dental_user WITH PASSWORD 'yourpassword';"
+sudo -u postgres psql -c "CREATE DATABASE dental_db OWNER dental_user;"
+
+# Verify
+psql -U dental_user -d dental_db -c "\conninfo"
+```
+
+> Then update `DATABASE_URL` in your `.env` file:
+> ```
+> DATABASE_URL="postgresql://dental_user:yourpassword@localhost:5432/dental_db"
+> ```
+
+### Install Redis (Ubuntu/Debian)
+
+```sh
+sudo apt-get install -y redis-server
+sudo systemctl enable redis-server
+sudo systemctl start redis-server
+
+# Verify it's running
+redis-cli ping   # should print: PONG
+```
+
+> Both PostgreSQL and Redis are system services, not npm packages. `npm install` handles all Node.js dependencies automatically — these must be installed separately at the OS level.
+
+
+
+
 # Dental Manager - Starter 
 
 A monorepo setup to manage both Backend and Frontend of the Dental Manager application.