Merge commit '2ebde97fb3af19402eab83fca2bfbec9ddfd166a' into easy-wins-20261103-pr1518

docs/CURRENT-STATE.md

@@ -4716,8 +4716,9 @@ programmatic activation do not trigger this reveal.
 
 Radio directory admission is atomic on both sides of the proxy boundary. A
 refresh is healthy only when it reaches the minimum accepted-query and station
-coverage; schema-valid responses with zero normalized stations count as failed
-queries rather than inflating refresh health. Each specialist query also needs
+coverage from broad/specialist queries; their schema-valid responses with zero
+normalized stations count as failed queries rather than inflating refresh health.
+Optional priority-country outcomes do not gate catalog health. Each specialist query also needs
 an accepted station whose normalized tags match that requested category; rows
 tagged only for another category remain usable catalog data but do not earn
 specialist health credit. A partial cold result remains
@@ -6319,6 +6320,46 @@ Existing catalog validation, category filters, tuning and voice playback behavio
 remain unchanged. Audio connects directly to the broadcaster after an explicit
 play action; the source does not relay or record streams.
 
+### Radio priority-country coverage
+
+Optional `RADIO_PRIORITY_COUNTRIES` is a server-owned comma-separated list of
+up to eight ISO alpha-2 codes (for example `IN,PL`). Restart after changing it.
+The `UK` alias is canonicalized to `GB` before deduplication and querying.
+It needs no API key and adds no POWER UP entry. An empty list preserves the
+existing global/tag-based directory. Invalid configuration fails at startup.
+
+Each country adds one Radio Browser search capped at 200 rows, with existing
+HTTPS/geolocation/codec validation and an additional matching-country check.
+Up to 40 unique accepted stations per country are seeded before the specialist
+tag queries and global popularity fill, within the unchanged 750-station cap.
+No country gets exhaustive coverage. A valid, in-limit country response with
+zero eligible stations succeeds with zero selected stations.
+The response's `coverage.priorityCountries` reports accepted query status and
+selected counts when configured. The existing broad/specialist health policy
+still applies separately. Country outcomes are advisory: failed, malformed or
+oversized country queries report unsuccessful coverage but cannot degrade or
+block admission of an otherwise healthy global catalog. Queries share the existing
+three-worker pool, single-flight refresh and 45-minute cache.
+Structurally malformed rows are skipped and counted in the upstream
+`rejectedStationCount` diagnostic; mixed country responses retain their valid
+rows, while an entirely malformed nonempty country response reports unsuccessful
+coverage. The diagnostic does not block catalog admission.
+
+For every installation, including those with no priority countries configured,
+at most three mirrors are tried per request; fallback mirrors beyond the first
+three candidates are not attempted. Failed or partial catalog refreshes retry
+after one minute, so a cold-start failure can continue returning 503 for that
+minute even if upstream recovers sooner. Healthy catalogs retain the 45-minute
+cache. The seven-day last-good expiry and known-station-only click reporting
+remain in force.
+
+Validation: `node --test src/data/radioProxy.test.mjs` covers configuration,
+country quotas under global popularity pressure, duplicate records, concurrency,
+cache reuse, country mismatch/oversize/empty/ineligible responses, failure isolation on cold
+and warm refreshes beyond seven days, and retry/backoff recovery both with and
+without configured countries. `node scripts/qa-radio.mjs --url http://localhost:4173` covers the existing
+750-station browser presentation and playback contract.
+
 ## Local RTL-SDR and Local ADS-B
 
 The Radio panel holds a Local RTL-SDR card below internet radio. One browser