Settings, Deliveries: an Overview tab with trends, failures by reason and webhook endpoints - #233

Summary

An Overview tab on Settings, Deliveries: how deliveries went over 24 hours, 7 days or 30 days against the period before, with every element opening the list narrowed to it. It lives on Deliveries, not Insights, Analytics, because Deliveries is admin-only and the drill-in lands on the same page.

Pairs with CoderHelm/coderhelm-platform#321 (GET /api/deliveries/analytics).

Changes

• Tabs on Deliveries: Deliveries (the list, still the default) and Overview (?view=overview). Source and status carry between them.

• Overview (components/delivery-overview.tsx):

  • tiles for success rate, deliveries (with retries and how many then went fine), failures (with the most common reason) and how long the slowest 5% took, each with its change in words against the period before;
  • deliveries per hour or day (went fine and failed) and the success rate over time;
  • failures by reason in plain words with the fix;
  • webhook endpoints with state (on, off, off because it kept failing, failing N in a row, deleted), success rate, slowest 5% and last failure;
  • deliveries by source, and the event types that failed most.

  Filters: period, status, source and endpoint, all kept in the address. Readable empty, "counting older deliveries" and low-data states.

• Drill-in: tiles, bars and points, the chart tables, reasons, endpoints, sources and events link to the list. The list now takes from/until (one hour, one day or the period), endpoint and reason from the address, each shown as a chip you can remove.

• Shared charts: components/charts.tsx holds the chart card, tooltip, axis, series colors, table and change helpers that Analytics used inline; Analytics imports them, unchanged.

• API: api.getDeliveryAnalytics and its types, plus until, endpoint and reason on the list filter.

• Endpoint links use endpointHref from Webhooks: endpoint settings, Deliveries sharing line, and docs for the webhooks CoderHelm sends #223 (Settings, Webhooks); rebased on it.

Verification

• npm run lint (ui-lint and no-hosted-links), npm run typecheck, npm run check:openapi and npm run build pass.
• Full e2e on the static build (E2E_STATIC=1): 1095 passed (after the rebase on Webhooks: endpoint settings, Deliveries sharing line, and docs for the webhooks CoderHelm sends #223).
• New e2e/delivery-overview.spec.ts:
  • the overview at 1440 and 390, with no sideways scroll;
  • filters going to the server and the address;
  • drill-in from a reason, a bar, the chart table, an endpoint, a tile, an event and a source;
  • empty and low-data states at 1440 and 390.
• Screenshots reviewed at 1440 and 390 (full, empty, low data). Two tables that clipped at 1440 were narrowed and stacked.
• Customer-name grep on git diff origin/main prints nothing.