refactor: Remove hardcoded email and improve environment variable handling

- Removed hardcoded email address `hello@ciphervance.com` and replaced it with `SENDER_EMAIL` from environment variables.
- Added `python-dotenv` to load environment variables from `.env` file for better configuration management.
- Removed redundant logging setup and debug statements for cleaner code.
- Simplified the `send_email` function by removing unnecessary logging and debug output.
- Ensured consistent use of environment variables for SMTP settings and recipient email.

This change improves maintainability and security by avoiding hardcoded values and centralizing configuration.

app/__init__.py

@@ -2,13 +2,12 @@ from flask import Flask
 from dotenv import load_dotenv
 import os
 
-load_dotenv()  # Load environment variables from .env file
+load_dotenv()
 
 def create_app():
     app = Flask(__name__)
     app.config['SECRET_KEY'] = os.getenv('SECRET_KEY')
 
-    # Register blueprints or routes here
     from .routes import main
     app.register_blueprint(main)