Restore Pull Requests metrics in team-scoped view by enriching team reportData with PR day totals

[Copilot]

Organization scope returned Pull Requests metrics, but team scope rendered the PR tab as empty because team aggregation preserved usage totals while dropping day_totals[].pull_requests. This change aligns team responses with org responses so the PR tab has the data it expects.

• Root cause

  • Team-scoped metrics are built from per-user records (aggregateTeamMetrics), which do not include PR aggregates.
  • PullRequestViewer reads PR data from reportData[].pull_requests; in team scope that field was missing.

• Backend change: team PR enrichment

  • Added enrichTeamReportWithPullRequests(...) in shared/utils/metrics-util-v2.ts.
  • For team requests, after per-user aggregation, fetches the team report via fetchLatestReport(...) and merges pull_requests into matching day_totals by day.
  • Applies in all team paths:
    • historical mode (DB-backed team aggregation),
    • historical mode API fallback,
    • direct API mode.
  • If PR report data is unavailable, behavior degrades safely to existing non-PR output.

• Regression coverage

  • Extended tests/metrics-util-v2-team-path.spec.ts with a focused test asserting team reportData includes pull_requests when provided by the report API.

const enrichedReport = await enrichTeamReportWithPullRequests(
  report,
  options,
  event.context.headers,
  identifier
);
return buildFilteredResult(enrichedReport, options);

• Fixes This appears to be a GitHub issue related to the Pull Requests tab. #447

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[Copilot]

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