2.4.0 minor tweaks to split expected and ongoing alerts

[2.4.0]

Added

• Split Ongoing and Expected Alerts - Separate formatted content attributes for better display control
  • New formatted_content_expected attribute for alerts that haven't started yet
  • Existing formatted_content now only shows ongoing alerts (already started)
  • New ongoing_alerts count attribute (number of alerts already active)
  • New expected_alerts count attribute (number of alerts starting in the future)
  • State (active_alerts) remains the total count of all alerts
  • Enables separate display cards for current vs. upcoming alerts
  • Alert timing based on starttime field compared to current time
  • Both attributes available for CAP-formatted sensors only

Technical Details

• Alerts are split based on their starttime field
• If starttime > now: classified as "expected" (future)
• If starttime <= now or no starttime: classified as "ongoing" (current)
• formatted_summary continues to show all alerts (combined) as before
• Timezone-aware comparison handles both naive and aware datetimes

[previously]

Changed

• 🎨 Enhanced Visual Layout - Improved alert display with Home Assistant markdown card
  • Banner-style <ha-alert> boxes for visual hierarchy
  • Alert icons displayed in separate colored alert header (color based on severity)
  • Severity-based coloring: Red (Severe/Extreme), Orange (Moderate/Minor), Blue (Unknown)
  • Each alert shown in colored box with event name and status as title
  • Time periods displayed in styled table (bold labels, italic values) within alert
  • All alert details (description, instructions, consequences, area) contained within alert box
  • Better visual alignment and background for comprehensive alert information
  • Removed markdown headers (####) in favor of bold text within alerts