Add most popular apps and APIs sections to daily admin report

[jalexw]

Summary

Extends the daily admin report to include two new sections: "Most popular applications" and "Most popular APIs", providing visibility into which client apps and API servers are generating the most token activity.

Key Changes

• New database query functions:

  • listTopMostPopularAppsSince() - Ranks client applications by total tokens issued (access + refresh combined)
  • listTopMostPopularApisSince() - Ranks API servers by access tokens issued (refresh tokens excluded since they're always issued to the auth server)
  • countTokensIssuedSinceGroupedByColumn() - Shared utility to group token counts by arbitrary issued_tokens columns

• Report generation updates:

  • Added HTML table sections for both apps and APIs with rank, name, ID, and token counts
  • Added plain-text equivalents for email clients without HTML support
  • Both sections display "No activity" message when empty
  • Token counts formatted with locale-aware number formatting

• Data flow:

  • sendDailyReportHandler now fetches top apps and APIs in parallel with other report data
  • Passes results to buildDailyAdminReport which renders both HTML and text versions
  • Includes counts in telemetry logging

Implementation Details

• Apps are ranked by total tokens (access + refresh) since both token types carry the real client_app_id
• APIs are ranked by access tokens only, as refresh tokens are always issued with the auth server as audience
• Both functions resolve human-readable names from hardcoded app/API definitions or database lookups
• Consistent styling with existing report sections (brand colors, borders, typography)
• Default limit of 10 items per section, configurable via function parameters

https://claude.ai/code/session_015YubdbmA5Vtzi2ydEJNqmt