Tie points to locator serial numbers and store receiver telemetry

Adds devices/<serial>/log as a job-anchored MQTT ingest path: a locator
identifies itself by serial in the topic (auto-registered on first
sight, org resolved from the job in the payload) rather than by a
pre-provisioned broker credential. Device.serialNumber is now globally
unique so the bare topic segment is enough to resolve identity.
Locator lookup/auto-register logic is shared (LocatorRegistryService)
between this and the existing devices/<mqttUsername>/points path.

New /sim page (own header, outside the main app nav) simulates a
transmitter: pick an open job or create one, set a serial number and
telemetry defaults, and send points one at a time or on an interval
along a simulated walking path. It calls a new authenticated backend
endpoint (POST /orgs/:orgId/sim/publish) that publishes onto the real
broker rather than writing the DB directly, so the simulator exercises
the actual ingest pipeline end-to-end.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

backend/src/ingest/ingest.module.ts

@@ -2,11 +2,21 @@ import { Module } from '@nestjs/common';
 import { RealtimeModule } from '../realtime/realtime.module';
 import { IngestRouterService } from './ingest-router.service';
 import { JobsIngestService } from './jobs-ingest.service';
+import { LocatorRegistryService } from './locator-registry.service';
+import { LogIngestService } from './log-ingest.service';
 import { MqttClientService } from './mqtt-client.service';
 import { PointsIngestService } from './points-ingest.service';
 
 @Module({
   imports: [RealtimeModule],
-  providers: [MqttClientService, IngestRouterService, PointsIngestService, JobsIngestService],
+  providers: [
+    MqttClientService,
+    IngestRouterService,
+    PointsIngestService,
+    JobsIngestService,
+    LogIngestService,
+    LocatorRegistryService,
+  ],
+  exports: [MqttClientService],
 })
 export class IngestModule {}