Merge feat/voice-geometry onto main

Both stack parents (#837, #842) are on main, so the voice geometry branch
now builds on main directly. Conflict resolutions keep main's behaviour and
add the geometry work on top: osm_query gating on every provider, restored
admin identity for Nominatim outlines, merged analyst follow-up memory, and
the cancelled Globe View reset instruction ahead of the generic cancellation.

src/voice/sessionCommands.js

@@ -156,7 +156,7 @@ export function createVoiceCommands({
       pointer?.clear();
       referents?.clear();
       // Conversation memory ("those", "the last answer") ends with the
-      // session.
+      // session; area handles live for the page.
       runner.resetConversation?.();
     }
   });