Food README: request telemetry (telemetry_samples, one-minute aggregates, 14 days) (#48)

ddiff --git a/README.md b/README.md
iindex 0754116..0c7f8e9 100644
---- a/README.md
++++ b/README.md
@@@ -43,6 +43,10 @@ Its own PostgreSQL tables, created by [migrations/](migrations/) and written by
    applied, so a redelivered event changes nothing.
  - `food_recipe_suggestions` (0004) — a person's recipe ideas from OpenVibe.AI (the validated output plus Food's own
    to-buy costs), keeping the last 20 per person.
++- `telemetry_samples` (0006) — request telemetry (openvibe-sdk 0.46, `platform.telemetry-sample@1`): each HTTP request by
++  route template, method and status class, never raw URL; one `http.request` sample a minute per key plus active-
++  requests, p95 latency and event-loop-lag gauges; `/shared`, static assets, health, readiness and `/metrics` excluded;
++  rows older than 14 days deleted daily ([server/app.js](server/app.js) mounts it, [server/index.js](server/index.js) flushes and prunes).
  
  0001 creates no tables. The service is the authority for these rows and for nothing else.