feat(hunt): track walking distance via GPS, show live locations on map

Add foreground-only GPS distance tracking for hunts

server/api/admin/hunt/[huntId]/teams.get.ts

@@ -1,5 +1,6 @@
 import { useValidatedParams, z, zh } from 'h3-zod';
 import prisma from '~~/lib/prisma';
+import { teamAverageDistance } from '~~/server/utils/distance';
 
 export default defineEventHandler(async (event) => {
   const user = await requireUserSession(event);
@@ -25,6 +26,7 @@ export default defineEventHandler(async (event) => {
       id: true,
       name_de: true,
       name_en: true,
+      trackDistance: true,
       teams: {
         omit: {
           huntId: true,
@@ -84,11 +86,21 @@ export default defineEventHandler(async (event) => {
   }
   const { teams, ...hunt } = _hunt;
 
+  const tracks = await prisma.userTrack.findMany({
+    where: { huntId },
+    select: { userId: true, distanceMeters: true }
+  });
+  const trackMap = new Map(tracks.map((t) => [t.userId, t.distanceMeters]));
+
   return {
     teams: teams
       .map(({ answers, ...t }) => ({
         ...t,
-        score: answers.reduce((sum, a) => sum + (a.review?.score || 0), 0)
+        score: answers.reduce((sum, a) => sum + (a.review?.score || 0), 0),
+        distance: teamAverageDistance(
+          [t.owner.id, ...t.members.map((m) => m.member.id)],
+          trackMap
+        )
       }))
       .toSorted((a, b) => b.score - a.score),
     ...hunt