v0.3.0 — Uptime History

What's New

90-day uptime history — Beacon now tracks and displays historical uptime for all monitored services.

• Per-day colored uptime bar for each service (green ≥99%, yellow ≥95%, red <95%)
• Hover tooltips showing exact date and uptime percentage
• Overall uptime percentage per service
• SQLite-backed storage (Python stdlib — zero new dependencies)
• Configurable retention period via HISTORY_DAYS (default 90)
• Data persists across restarts via /data volume mount

Configuration

Mount a volume at /data to persist uptime history:

volumes:
  - beacon-data:/data

New environment variables:

Variable	Default	Description
HISTORY_DB	/data/beacon.db	SQLite database path
HISTORY_DAYS	90	Days to retain