Luca Sacchi Ricciardi 0df1638da8 feat(schemas): T30 add Pydantic statistics schemas ...

Add comprehensive Pydantic schemas for statistics management:
- UsageStatsCreate: input validation for creating usage stats
- UsageStatsResponse: orm_mode response schema
- StatsSummary: aggregated statistics with totals and averages
- StatsByModel: per-model breakdown with percentages
- StatsByDate: daily usage aggregation
- DashboardResponse: complete dashboard data structure

All schemas use Decimal for cost precision and proper validation.

Test: 16 unit tests, 100% coverage on stats.py

2026-04-07 15:04:49 +02:00

9.7 KiB

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