Database Disk Usage Monitor#
New Features:
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Added a disk usage monitor daemon that periodically checks storage consumption.
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Sends warning emails to administrators when usage crosses a configured threshold.
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Blocks insert/update operations when usage exceeds a higher critical threshold.
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Introduced configurable environment variables for warning and blocking thresholds with validation.
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Integrated disk usage checks into both the FastAPI app and gRPC serve to enforce write blocked.
Enhancements:
- Extended the email sender with a method and HTML template specifically for disk usage alert notifications.

