Initial commit - copied workspace after database cleanup

.env.example

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+# Copy this file to .env and fill in values as needed for local development.
+# NOTE: No secrets should be committed. Use placeholders below.
+
+# General
+ENV=development
+
+# Database (used if DB_CONN not provided)
+DB_USER=your_user
+DB_PASSWORD=your_password
+DB_NAME=infoscreen_by_taa
+DB_HOST=db
+# Preferred connection string for services (overrides the above if set)
+# DB_CONN=mysql+pymysql://${DB_USER}:${DB_PASSWORD}@${DB_HOST}/${DB_NAME}
+
+# MQTT
+MQTT_BROKER_HOST=mqtt
+MQTT_BROKER_PORT=1883
+# MQTT_USER=your_mqtt_user
+# MQTT_PASSWORD=your_mqtt_password
+MQTT_KEEPALIVE=60
+
+# Dashboard
+# Used when building the production dashboard image
+# VITE_API_URL=https://your.api.example.com/api
+
+# Groups alive windows (seconds)
+HEARTBEAT_GRACE_PERIOD_DEV=15
+HEARTBEAT_GRACE_PERIOD_PROD=180
+
+# Scheduler
+# Optional: force periodic republish even without changes
+# REFRESH_SECONDS=0
+
+# Default admin bootstrap (server/init_defaults.py)
+DEFAULT_ADMIN_USERNAME=infoscreen_admin
+DEFAULT_ADMIN_PASSWORD=Info_screen_admin25!