flow diagrams

.env

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-# Flic to PWA WebPush Configuration
-
-# --- VAPID Keys (Required) ---
-# Generate using: npx web-push generate-vapid-keys
-VAPID_PUBLIC_KEY=BKfRJXjSQmAJ452gLwlK_8scGrW6qMU1mBRp39ONtcQHkSsQgmLAaODIyGbgHyRpnDEv3HfXV1oGh3SC0fHxY0E
-VAPID_PRIVATE_KEY=ErEgsDKYQi5j2KPERC_gCtrEALAD0k-dWSwrrcD0-JU
-VAPID_SUBJECT=mailto:admin@virtonline.eu
-
-# --- Server Configuration ---
-# Internal port for the Node.js app
-PORT=3000
-SUBSCRIPTIONS_FILE=subscriptions.json
-DEFAULT_BUTTON_NAME=game-button
-
-# --- Authentication (Optional) ---
-# If both USERNAME and PASSWORD are set, Basic Auth will be enabled for:
-#   - POST /subscribe
-#   - GET /webhook
-# Leave blank to disable authentication.
-BASIC_AUTH_USERNAME=player
-BASIC_AUTH_PASSWORD=SevenOfNine
-
-# --- Web Push Retry Configuration (Optional) ---
-# Number of retries on failure (e.g., DNS issues)
-NOTIFICATION_MAX_RETRIES=3    
-# First retry delay in milliseconds (minimal delay for immediate retry)
-NOTIFICATION_FIRST_RETRY_DELAY_MS=10
-# Base delay in milliseconds for subsequent retries (used for exponential backoff)
-NOTIFICATION_SUBSEQUENT_RETRY_DELAY_MS=1000
-
-# --- Network Configuration (Optional) ---
-# Timeout for DNS lookups (ms)
-DNS_TIMEOUT_MS=5000 
-# Timeout for outgoing HTTP requests (ms)
-HTTP_TIMEOUT_MS=10000 
-
-# --- Logging ---
-# Controls log verbosity: error, warn, info, debug
-LOG_LEVEL=info