fix: resolve MapLibre worker rendering regression by configuring custom worker and updating geometry type filters

apps/api/src/common/guards/admin.guard.ts

@@ -11,7 +11,7 @@ export class AdminGuard implements CanActivate {
       throw new UnauthorizedException('Tenant not found in request');
     }
 
-    if (tenant.plan !== TenantPlan.ENTERPRISE && tenant.role !== TenantRole.ADMIN) {
+    if (tenant.plan !== TenantPlan.ENTERPRISE && tenant.role !== 'ADMIN') {
       throw new ForbiddenException('Admin access required. Your tenant must have an ENTERPRISE plan or ADMIN clearance.');
     }
 

apps/web/src/components/MapComponent.tsx

@@ -198,7 +198,7 @@ const MapComponent: React.FC<MapProps> = ({
         id: 'los-line',
         type: 'line',
         source: 'los-source',
-        filter: ['==', '$type', 'LineString'],
+        filter: ['==', ['geometry-type'], 'LineString'],
         layout: { 'line-cap': 'round', 'line-join': 'round' },
         paint: {
           'line-color': '#f59e0b',
@@ -211,7 +211,7 @@ const MapComponent: React.FC<MapProps> = ({
         id: 'los-points',
         type: 'circle',
         source: 'los-source',
-        filter: ['==', '$type', 'Point'],
+        filter: ['==', ['geometry-type'], 'Point'],
         paint: {
           'circle-radius': 8,
           'circle-color': [
@@ -230,7 +230,7 @@ const MapComponent: React.FC<MapProps> = ({
         id: 'los-labels',
         type: 'symbol',
         source: 'los-source',
-        filter: ['==', '$type', 'Point'],
+        filter: ['==', ['geometry-type'], 'Point'],
         layout: {
           'text-field': ['get', 'label'],
           'text-size': 12,

apps/web/src/main.tsx

@@ -1,6 +1,6 @@
 import React, { useEffect, useState } from 'react'
 import ReactDOM from 'react-dom/client'
-import maplibregl from 'maplibre-gl'
+import maplibregl from './utils/maplibreWorker'
 import App from './App.tsx'
 import CompareView from './pages/CompareView'
 import IntelligenceDashboard from './pages/IntelligenceDashboard'

apps/web/src/utils/maplibreWorker.ts

@@ -0,0 +1,10 @@
+import maplibregl from 'maplibre-gl';
+import workerUrl from 'maplibre-gl/dist/maplibre-gl-csp-worker.js?url';
+
+// MapLibre 5 serializes its embedded worker from functions. Vite's class-field
+// transform injects __publicField outside those functions, leaving GeoJSON
+// workers with an undefined helper. Serve the matching standalone worker as an
+// untransformed asset in both development and production, before any map exists.
+maplibregl.setWorkerUrl(workerUrl);
+
+export default maplibregl;

docs/map-rendering-regression.md

@@ -0,0 +1,48 @@
+# GeoJSON overlay rendering regression
+
+The tactical calculations return geometry, but MapLibre's GeoJSON worker fails
+with `__publicField is not defined`. HTML markers and vector basemap tiles still
+render, so the UI appears functional while all GeoJSON overlays remain invisible.
+
+## Cause
+
+Commit `0bf1382` changed Vite 8.0.1 to 6.4.3 (and the React plugin to 4.7.0).
+The current optimized MapLibre 5.20.2 bundle imports `__publicField` outside the
+functions that MapLibre serializes into its embedded worker. The GeoJSON indexing
+code references that helper inside the worker, where it does not exist.
+Changing geometry filters, opacity, layer order, or camera bounds cannot repair
+this worker failure.
+
+## Fix
+
+`src/utils/maplibreWorker.ts` loads the installed MapLibre 5 standalone CSP worker
+using Vite's asset URL import and calls `setWorkerUrl` before React creates maps.
+`src/main.tsx` imports this configured MapLibre instance. Other components share
+the same underlying MapLibre module. No API or geometry calculation change is
+required.
+
+The `?url` import is intentional for this self-contained MapLibre 5 worker: it
+preserves the vendor file without transpilation. Revisit the worker entry point
+if upgrading MapLibre to a new major version.
+
+## Verification (2026-09-24)
+
+- Reproduced the missing overlays on the official tactical site, and confirmed
+  its Isochrone API returned three valid Polygon features.
+- A minimal map with an empty base style and a fixed line/polygon reproduced the
+  same failure: zero source/rendered features and `__publicField is not defined`.
+- With the standalone worker, that same map visibly drew both geometries, with
+  eight tile-level source/rendered feature entries and no worker error.
+- Tested the modified tactical UI locally, proxying API requests to the official
+  service: terrain overlays, the 10.9 km² / 14% viewshed, and colored Isochrone
+  regions rendered. Temporary diagnostic geometry was removed afterward.
+- `npm run build` succeeds. The emitted standalone worker is byte-identical to
+  the installed vendor worker.
+
+## Deployment
+
+Deploy `apps/web/src/main.tsx` and `apps/web/src/utils/maplibreWorker.ts` together.
+The observed official site serves Vite development modules; restart its web
+service and reload the browser after deploying. For a production build, deploy
+the complete `dist` output, including the emitted worker asset. The live site
+has not been changed by this local fix.