Honest pins and paths: geocode precision, type-gated paths, impossible-speed stops (#236)

Backend: _geocode_location now returns {lat, lng, location_type}, so the
precision rides onto the call doc and, unchanged via _resolve_location_pair,
onto the incident pin. Display-only: every correlator read indexes lat/lng.

Frontend: pins styled by precision (rooftop / interpolated ring /
GEOMETRIC_CENTER dashed uncertainty circle labelled with the spoken place /
unverified pre-#23 pins ghosted). liveWall.pathStops() is shared by the map
and the call spine: only police/accident incidents with a pursuit tag draw a
numbered path; others get unnumbered call dots. Segments over >10 min gaps or
talkgroup changes are dashed, stops implying >8 km/min are ghosted off the
path, paths >20 km get a "may be merged" badge. New optional MapView prop
pulseIncidentIds (wired by #238).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

drb-frontend/lib/types.ts

@@ -344,6 +344,20 @@ export interface TranscriptSegment {
   text: string;
 }
 
+/**
+ * Google Geocoding precision, persisted with the coords since server-26#236.
+ * ROOFTOP = a street address; RANGE_INTERPOLATED = estimated between two
+ * address points; GEOMETRIC_CENTER = the centre of a road, intersection or
+ * named place — can be hundreds of metres off. Absent on older docs.
+ */
+export type GeoLocationType = "ROOFTOP" | "RANGE_INTERPOLATED" | "GEOMETRIC_CENTER";
+
+export interface GeoPoint {
+  lat: number;
+  lng: number;
+  location_type?: GeoLocationType | string | null;
+}
+
 export interface CallRecord {
   call_id: string;
   node_id: string;
@@ -370,7 +384,7 @@ export interface CallRecord {
   incident_id?: string | null;
   location: string | null;
   /** Per-call geocode, written by intelligence.py. Powers the incident-path polyline on the map. */
-  location_coords?: { lat: number; lng: number } | null;
+  location_coords?: GeoPoint | null;
   /** Unit callsigns mentioned in this specific transmission (e.g. "15-9", "E-41"). */
   units?: string[];
   vehicles?: string[];
@@ -403,7 +417,13 @@ export interface IncidentRecord {
   type: string | null;
   status: "active" | "resolved";
   location: string | null;
-  location_coords: { lat: number; lng: number } | null;
+  location_coords: GeoPoint | null;
+  /**
+   * The label the pin was geocoded from (server-26#23). Absent on incidents
+   * written before that fix — their pin cannot be tied to their label and is
+   * drawn ghosted (DEFERRED.md `_verified_pin` row, server-26#28).
+   */
+  location_coords_source?: string | null;
   call_ids: string[];
   system_ids: string[];
   talkgroup_ids: string[];