feat(search): compose Google and Photon through an explicit provider service

CHANGELOG.md

@@ -195,6 +195,27 @@ of current runtime behavior, see [`docs/CURRENT-STATE.md`](docs/CURRENT-STATE.md
 - Existing cached refusals are now ignored immediately, including during
   stale-data fallback. Concurrent identical requests share the same last-good
   fallback when all mirrors refuse, without duplicating upstream requests.
+- A keyless place lookup no longer remembers a network failure as "no such
+  place". A blip while Photon was answering used to be memoized for the rest of
+  the session, so the query kept returning not-found from memory on a network
+  that had since recovered. A miss is now cached only when every source
+  consulted actually returned a verdict.
+
+### Added
+
+- Keyless place search. The LOCATION search box and the `fly_to_location` voice
+  tool now resolve place names through Photon (komoot, over OpenStreetMap) when
+  no Google Maps key is configured — previously the lookup threw. Google stays
+  the primary path and is unchanged when it answers; the fallback also covers a
+  key whose Geocoding API is not enabled, which Google reports as HTTP 200 with
+  `REQUEST_DENIED`, so an empty result is the detector rather than an error.
+- The same keyless fallback now covers the remaining two place lookups: map
+  annotations ("annotate the botanical garden") and the Radio layer's
+  "near \<place>" selection. Radio previously threw without a key, which
+  surfaced as a failed voice turn rather than as a station it could not place;
+  annotations silently failed to anchor. Annotation footprints match OSM on the
+  resolved feature's canonical name, so locality words in the request cannot
+  pull the outline onto a neighbouring building.
 
 - Refresh vulnerable transitive dependencies and update browser/image tooling
   to Puppeteer 25.10.0 and Sharp 0.35.4. Cesium remains on 1.138.0.