fix(backoffice): stop sharing the position cookie with Smart Office

Both apps wrote a cookie named `current-position-id` but stored
different ids in it — freight the `employeePositionId`, Smart Office the
`position.id`. On a shared domain each login overwrote the other's desk
selection, and the loser silently fell back to the first position.

Freight now uses `freight-current-position-id` through a small helper
that reads the old name once, so a session live across the deploy keeps
its desk, and clears it on every write.

Also mounts the position switcher in the freight dashboard header. It
only existed under /performance-management, so on every other page a
two-desk user had no way to switch and was stuck on whatever
`useAuthUser` defaulted to. It now hides below two positions rather than
showing a one-option dropdown to the single-desk majority.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

apps/edr-freight-api/src/modules/audit/audit.interceptor.ts

@@ -4,24 +4,17 @@ import {
   HttpException,
   Injectable,
   NestInterceptor,
-} from '@nestjs/common';
-import { Observable, tap } from 'rxjs';
-import type { Request, Response } from 'express';
+} from "@nestjs/common";
+import { Observable, tap } from "rxjs";
+import type { Request, Response } from "express";
 
-import { AuditService } from './audit.service';
-import {
-  auditEndpointMatcher,
-  type MatchedAuditEndpoint,
-} from './audit-endpoint-matcher';
-import {
-  isAuditableActor,
-  resolveAuditActor,
-  type AuditActorSource,
-} from './audit-actor';
-import { redactUrlQuery, sanitizeRequestPayload } from './audit.sanitizer';
+import { AuditService } from "./audit.service";
+import { auditEndpointMatcher, type MatchedAuditEndpoint } from "./audit-endpoint-matcher";
+import { isAuditableActor, resolveAuditActor, type AuditActorSource } from "./audit-actor";
+import { redactUrlQuery, sanitizeRequestPayload } from "./audit.sanitizer";
 
 /** Methods that can change state. Everything else is never audited. */
-const AUDITED_METHODS = new Set(['POST', 'PUT', 'PATCH', 'DELETE']);
+const AUDITED_METHODS = new Set(["POST", "PUT", "PATCH", "DELETE"]);
 
 /** `error_message` ceiling — stack traces do not belong in this column. */
 const MAX_ERROR_LENGTH = 2_000;
@@ -52,7 +45,7 @@ export class AuditInterceptor implements NestInterceptor {
 
   intercept(context: ExecutionContext, next: CallHandler): Observable<unknown> {
     // Non-HTTP contexts (the RabbitMQ microservice transport) have no request.
-    if (context.getType() !== 'http') return next.handle();
+    if (context.getType() !== "http") return next.handle();
 
     const httpContext = context.switchToHttp();
     const request = httpContext.getRequest<RequestWithUser>();
@@ -72,10 +65,7 @@ export class AuditInterceptor implements NestInterceptor {
     const startedAt = Date.now();
     // The body is captured up front: handlers are free to mutate the DTO they
     // are given, so reading it after the fact can record post-mutation values.
-    const requestPayload = sanitizeRequestPayload(
-      request.body,
-      request.files ?? request.file,
-    );
+    const requestPayload = sanitizeRequestPayload(request.body, request.files ?? request.file);
 
     return next.handle().pipe(
       tap({
@@ -137,7 +127,6 @@ export class AuditInterceptor implements NestInterceptor {
       resourceId: matched.resourceId,
       request: requestPayload,
       ipAddress: resolveIp(request),
-      userAgent: request.headers['user-agent'] ?? null,
       requestId: resolveRequestId(request),
       durationMs: Date.now() - startedAt,
     });
@@ -154,10 +143,10 @@ function resolveErrorMessage(error: unknown): string | null {
   if (error instanceof HttpException) {
     const response = error.getResponse();
     const message =
-      typeof response === 'string'
+      typeof response === "string"
         ? response
         : ((response as { message?: unknown })?.message ?? error.message);
-    const text = Array.isArray(message) ? message.join('; ') : String(message);
+    const text = Array.isArray(message) ? message.join("; ") : String(message);
     return text.slice(0, MAX_ERROR_LENGTH);
   }
 
@@ -171,19 +160,19 @@ function resolveErrorMessage(error: unknown): string | null {
  * entry (the original client) taken.
  */
 function resolveIp(request: Request): string | null {
-  const forwarded = request.headers['x-forwarded-for'];
+  const forwarded = request.headers["x-forwarded-for"];
   const raw = Array.isArray(forwarded) ? forwarded[0] : forwarded;
-  const candidate = raw?.split(',')[0]?.trim() || request.ip;
+  const candidate = raw?.split(",")[0]?.trim() || request.ip;
   if (!candidate) return null;
 
   // Normalize IPv4-mapped IPv6 (`::ffff:10.0.0.1`), which the `inet` column
   // accepts but which reads badly and breaks grouping by address.
-  return candidate.startsWith('::ffff:') ? candidate.slice(7) : candidate;
+  return candidate.startsWith("::ffff:") ? candidate.slice(7) : candidate;
 }
 
 /** Correlation id from the proxy/tracing layer, when present. */
 function resolveRequestId(request: RequestWithUser): string | null {
-  const header = request.headers['x-request-id'] ?? request.headers['x-correlation-id'];
+  const header = request.headers["x-request-id"] ?? request.headers["x-correlation-id"];
   const value = Array.isArray(header) ? header[0] : header;
   return (value ?? request.id ?? null)?.toString().slice(0, 64) ?? null;
 }