Introduced air quality and weather, onboarding for mobile devices with qr code and otp. Cascade on delete of device with telemtry.

services/device_manager/.env.sample

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+# Device Manager Environment Configuration
+
+# Database connection
+DATABASE_URL=postgresql://iot_user:your_password@localhost:5432/iot_dashboard
+
+# Certificate paths
+CA_CERT_PATH=certs/ca.crt
+CA_KEY_PATH=certs/ca.key
+CRL_PATH=certs/ca.crl
+
+# Certificate settings
+CERT_VALIDITY_DAYS=365
+CERT_KEY_SIZE=4096
+
+
+SERVER_IP=10.10.1.114
+
+# Device ID settings
+DEVICE_ID_LENGTH=8
+
+# Service settings
+DEVICE_MANAGER_HOST=0.0.0.0
+DEVICE_MANAGER_PORT=8000
+LOG_LEVEL=INFO