v1.5.1

• Environment Canada weather integration with 4 data coordinators
• Current conditions, hourly (48h) and daily (7-day) forecasts
• Weather alerts, AQHI air quality, sunrise/sunset
• WEonG precipitation enrichment via GeoMet WMS
• Migrate weather panel from YAML templates to custom Lovelace card (ec-weather-card)
• Add built-in daily forecast popup (replaces browser_mod dependency)
• Add mobile full-screen popup with swipe-down-to-close
• Add options flow for editing settings after install
• Auto-detect nearest city from HA home location during setup
• Add CSS custom properties for theming
• Remove sun.sun dependency (uses ec_sunrise/ec_sunset instead)