Add analytics endpoint, price history API, and fix daysAvailable calculation

- Fix daysAvailable to detect gaps >25 days (indicates unit was re-listed)
- Add /unit/:unitCode/price-history endpoint for full price history
- Add /analytics endpoint with monthly trends, seasonality analysis,
  plan performance, historical comparisons, and price per sqft stats
- Add /last-scrape endpoint to return timestamp of most recent data
- Increase priceHistory limit from 5 to 30 for better chart data

Dockerfile

@@ -3,6 +3,9 @@ FROM node:18-alpine
 # Set working directory
 WORKDIR /app
 
+# Install Curl
+RUN apk add --no-cache curl
+
 # Copy package files
 COPY package*.json ./
 

docker-compose.yml

@@ -9,8 +9,10 @@ services:
       - MONGO_URI=mongodb://admin:password123@mongodb:27017
     labels:
       - "traefik.enable=true"
+      - "traefik.docker.network=traefik"
       - "traefik.http.routers.apartment-api.rule=Host(`apartments.maverickapplications.com`) && PathPrefix(`/api`)"
       - "traefik.http.routers.apartment-api.entrypoints=websecure"
+      - "traefik.http.routers.apartment-api.tls=true"
       - "traefik.http.routers.apartment-api.tls.certresolver=letsencrypt"
       - "traefik.http.routers.apartment-api.priority=100"
       - "traefik.http.services.apartment-api.loadbalancer.server.port=8080"  # Updated to match