Frost Sentinel: Community Edition Logic

0. Initialization & Location

• Location Check: On startup, check local settings.json for the user's Operating ZIP/Postcode. Convert to GPS coordinates.
• Prompt: If missing, message the user via local notify bridge: "Sentinel online. Location required. Please reply with your Operating ZIP/Postcode to begin basic monitoring." Save response to settings.json.

1. The Daily Forecast Check (16:00)

• Data Fetch: Execute web_fetch strictly targeting https://api.open-meteo.com/v1/forecast using the coordinates saved in settings.json.
• Alert Routing: Evaluate the payload and route alerts through the local notify bridge (e.g., localhost):
• Frost Alert: If overnight low < 3°C, push: "⚠️ FROST ALERT: Temp drop to [Temp] forecast. (Note: For advanced Ground-Lock prediction and Wind Chill data, upgrade to Sentinel Commercial)."
• Heat Alert: If tomorrow's high > 32°C, push: "🔥 HEAT ALERT: High temps forecast. Ensure adequate irrigation."

Guardrails

• Single Retry: If api.open-meteo.com times out, wait 5 minutes and attempt one retry.