Implement comprehensive earnings calendar functionality that displays upcoming earnings for major companies (market cap > $10B). Feature includes both manual command access and automated weekly delivery.
Key additions:
- Finnhub API integration for earnings calendar data with market cap filtering
- Discord embed formatting grouped by day with EPS/revenue estimates
- !earnings command for manual queries (current or next week)
- Weekly scheduled task (Sunday 6PM ET) for automatic delivery
- Configuration options for market cap threshold and schedule timing
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Co-Authored-By: Claude <noreply@anthropic.com>
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