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.

server/providers/gemini/config.js

@@ -1,5 +1,5 @@
 import { realtimeInstructions } from '../openai/instructions.js';
-import { GEV_REALTIME_TOOLS } from '../openai/tools.js';
+import { GEV_REALTIME_TOOLS, offeredTools } from '../openai/tools.js';
 
 export const GEMINI_LIVE_MODEL_DEFAULT = 'gemini-3.8-live';
 export const GEMINI_TOKEN_ENDPOINT =
@@ -14,22 +14,26 @@ export function normalizeGeminiModel(value) {
   return /^gemini-[a-z0-9][a-z0-9.-]{0,119}$/.test(model) ? model : null;
 }
 
-/** REST BidiGenerateContentSetup fields, excluding its model resource name. */
+/**
+ * REST BidiGenerateContentSetup fields, excluding its model resource name.
+ * `overpass` says an operator configured Overpass, which `osm_query` needs.
+ */
 export function createGeminiLiveConfig(
   annotationGuidance,
   inputMode = 'open-mic',
   tools = GEV_REALTIME_TOOLS,
+  { overpass = false } = {},
 ) {
   if (!['open-mic', 'push-to-talk'].includes(inputMode))
     throw new Error('Invalid Gemini input mode');
   const config = {
     generationConfig: { responseModalities: ['AUDIO'] },
     systemInstruction: {
-      parts: [{ text: realtimeInstructions(annotationGuidance) }],
+      parts: [{ text: realtimeInstructions(annotationGuidance, { overpass }) }],
     },
     tools: [
       {
-        functionDeclarations: tools.map(
+        functionDeclarations: offeredTools(tools, { overpass }).map(
           ({ name, description, parameters }) => ({
             name,
             description,