Rent README: request telemetry (telemetry_samples, one-minute aggregates, 14 days) (#52)

ddiff --git a/README.md b/README.md
iindex 9c9b934..a5bada1 100644
---- a/README.md
++++ b/README.md
@@@ -97,6 +97,11 @@ Rent's own data is its PostgreSQL database ([server/db.js](server/db.js)); the `
  - **`area_price_index`** — the FHFA House Price Index rows behind "Home prices around here": the last six years of
    traditional, all-transactions, quarterly State and MSA index values, replaced whole on each refresh
    ([migrations/0006_area_price_index.sql](migrations/0006_area_price_index.sql)).
++- **`telemetry_samples`** — request telemetry (`platform.telemetry-sample@1`): each request by route template, method
++  and status class, never the raw URL. Once a minute one `http.request` sample per key, plus the active-requests,
++  p95 latency and event-loop-lag gauges, is written; rows over 14 days old are deleted daily. `/shared` files,
++  static assets, health, readiness and `/metrics` are not counted; wired in [server/app.js](server/app.js),
++  [server/index.js](server/index.js) ([migrations/0007_telemetry.sql](migrations/0007_telemetry.sql)).
  
  `migrations/0001_initial.sql` creates no tables (the skeleton). Every row keys a person as `user:usr_…`, and the
  namespace is `rent.*`.