Important

Added /internal/evaluations/run-stats endpoint to count evaluation runs, replacing direct ClickHouse queries in the UI.

• API Endpoint:
  • Added /internal/evaluations/run-stats in internal.rs to count evaluation runs.
  • Implemented handler get_evaluation_run_stats_handler in count_runs.rs.
• Backend:
  • Added count_total_evaluation_runs() in evaluation_queries.rs for ClickHouse query.
  • Defined EvaluationQueries trait in evaluation_queries.rs.
  • Added EvaluationRunStatsResponse type in types.rs.
• UI:
  • Replaced countTotalEvaluationRuns with getTensorZeroClient().countEvaluationRuns() in route.tsx and index.tsx.
  • Removed countTotalEvaluationRuns from evaluations.server.ts.
• Tests:
  • Added E2E test test_count_evaluation_runs in evaluations.rs.

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