Adding example .env file

.env.example

@@ -0,0 +1,32 @@
+# CalDAV config
+CALDAV_BASE_URL=https://your.caldav.server/remote.php/dav/calendars/username/
+CALDAV_PRINCIPAL=https://your.caldav.server/remote.php/dav/principals/users/username/
+CALDAV_USERNAME=your-username
+CALDAV_PASSWORD=your-password
+
+# Optional: comma-separated list of calendar URLs to override discovery
+
+CALDAV_CALENDARS=
+
+# Database
+
+DB_PATH=/data/sync\_state.db  
+FETCH_WINDOW\_DAYS=90  
+RETENTION_DAYS=30
+
+# SMTP / Email
+
+SMTP_HOST=smtp.example.com  
+SMTP_PORT=465  
+SMTP_USERNAME=user@example.com  
+SMTP_PASSWORD=your-smtp-password  
+SMTP_USE\_TLS=true # For SMTPS (implicit SSL on connect)  
+SMTP_USE\_STARTTLS=false # For opportunistic upgrade after plain connect  
+EMAIL_FROM=reminder@example.com  
+EMAIL_TO=your@email.com  
+EMAIL_SUBJECT\_PREFIX=Calendar Reminder:
+
+# Optional override intervals
+
+SYNC_INTERVAL=300 # Seconds between syncs (default 300 = 5 min)  
+DISPATCH_INTERVAL=60 # Seconds between checks for reminders (default 60)