app.py

from flask import Flask, render_template, send_from_directory, request, jsonify
import os

app = Flask(__name__)

# Fix conflict between Jinja2 and Vue.js delimiters
# We will use Vue's delimiters ['${', '}'] in the frontend, 
# but we also change Jinja2's just in case to avoid confusion.
app.jinja_env.variable_start_string = '[['
app.jinja_env.variable_end_string = ']]'
app.jinja_env.block_start_string = '[%'
app.jinja_env.block_end_string = '%]'

@app.route('/')
def index():
    return send_from_directory('static', 'index.html')

@app.route('/health')
def health():
    return "OK", 200

# Explicitly serve static files if needed (Flask does this by default from static folder, but good for explicit control)
@app.route('/static/<path:path>')
def send_static(path):
    return send_from_directory('static', path)

if __name__ == '__main__':
    port = int(os.environ.get('PORT', 7860))
    app.run(host='0.0.0.0', port=port, debug=True)