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[OPIK-6820] [BE] feat: add AI spend API (summary, composition, breakdown, users, recommendations)
发布于
2026-06-11 07:57:37 +00:00 Read-only spend endpoints under /v1/private/ai-spend over ClickHouse: workspace
summary KPIs, token-flow composition, per-lane breakdowns (incl. output lanes),
user leaderboard with DB-side sort + pagination, and savings recommendations.
Queries render via StringTemplate with log_comment and UUIDv7 id-range pruning;
high-spend flag, typed user_id filter, and recommendation impact enum. Includes
endpoint test coverage.Co-Authored-By: Claude Opus 4.8 noreply@anthropic.com
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