Add kilometer-based Fahrtkosten billing, self-service distance entry, role deletion

- Facility: TravelCostMode (Pauschale/ProKilometer) + TravelCostPerKm, alongside
  the existing flat rate; fixes FacilityService.UpdateAsync silently dropping all
  Konditionen fields on update.
- New EmployeeFacilityDistance (Mitarbeiter x Einrichtung -> km) with full
  office-side CRUD in omsorgapp, plus a self-service endpoint/UI so field staff
  can maintain their own commute distance via OMSORG Connect (new
  ModuleType.EmployeeFacilityDistances, Own-scope, no Facilities access needed).
- Roles can now be deleted (blocked with a 409 while still assigned to a user).
- Fix employeesApi.js missing the Date-object conversion for dateOfBirth/entryDate/
  exitDate that crashed employee creation whenever a date was filled in; add a
  clear/remove control for those date fields.
- Requirements: flesh out FR-REC-3 with a staged Akquise cadence, add FR-REC-5/6
  for CRM feature scope and success metrics.
- Regenerate api-client-ts and api-client-php for all of the above.

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

omsorgWeb/mitarbeiter-app/lib/layout.php

@@ -45,6 +45,11 @@ function layout_start(string $title, string $currentPage = 'dashboard'): void {
           <span class="nav-icon">⏱</span><span class="nav-label"> Zeiterfassung</span>
         </a>
       <?php endif; ?>
+      <?php if (has_permission('EmployeeFacilityDistances', 'View')): ?>
+        <a href="fahrtstrecken.php" class="<?= $currentPage === 'fahrtstrecken' ? 'active' : '' ?>">
+          <span class="nav-icon">🚗</span><span class="nav-label"> Fahrtstrecken</span>
+        </a>
+      <?php endif; ?>
       <a href="settings.php" class="<?= $currentPage === 'settings' ? 'active' : '' ?>">
         <span class="nav-icon">⚙</span><span class="nav-label"> Einstellungen</span>
       </a>

omsorgWeb/mitarbeiter-app/lib/omsorgCoreClient.php

@@ -258,3 +258,52 @@ function omsorgcore_time_entries_submit(array $config, string $accessToken, stri
             ->apiTimeEntriesIdSubmitPostWithHttpInfo($id);
     });
 }
+
+// --- EmployeeFacilityDistances (eigene Fahrtstrecke km je Einrichtung, FR-EIN-4) ---
+// Own-Scope: die EmployeeId wird serverseitig aus dem JWT aufgelöst (siehe
+// MyFacilityDistancesController in omsorgCore), Connect schickt hier bewusst nie eine employeeId mit.
+// Kein Facilities-Recht nötig - die Einrichtungsauswahl kommt über einen eigenen, minimalen
+// Endpoint (nur Id/Name, keine Konditionen/CRM-Daten).
+
+function omsorgcore_my_facility_distances_list(array $config, string $accessToken): array
+{
+    return omsorgcore_call($config, function ($cfg) use ($accessToken) {
+        $cfg->setAccessToken($accessToken);
+        return (new \OmsorgCoreClient\Api\MyFacilityDistancesApi(new \GuzzleHttp\Client(), $cfg))
+            ->apiMeFacilityDistancesGetWithHttpInfo();
+    });
+}
+
+function omsorgcore_my_facility_distances_facility_options(array $config, string $accessToken): array
+{
+    return omsorgcore_call($config, function ($cfg) use ($accessToken) {
+        $cfg->setAccessToken($accessToken);
+        return (new \OmsorgCoreClient\Api\MyFacilityDistancesApi(new \GuzzleHttp\Client(), $cfg))
+            ->apiMeFacilityDistancesFacilitiesGetWithHttpInfo();
+    });
+}
+
+function omsorgcore_my_facility_distances_create(array $config, string $accessToken, array $payload): array
+{
+    $request = new \OmsorgCoreClient\Model\CreateMyFacilityDistanceRequest([
+        'facility_id' => $payload['facilityId'],
+        'distance_km' => $payload['distanceKm'],
+    ]);
+    return omsorgcore_call($config, function ($cfg) use ($accessToken, $request) {
+        $cfg->setAccessToken($accessToken);
+        return (new \OmsorgCoreClient\Api\MyFacilityDistancesApi(new \GuzzleHttp\Client(), $cfg))
+            ->apiMeFacilityDistancesPostWithHttpInfo($request);
+    });
+}
+
+function omsorgcore_my_facility_distances_update(array $config, string $accessToken, string $id, array $payload): array
+{
+    $request = new \OmsorgCoreClient\Model\UpdateMyFacilityDistanceRequest([
+        'distance_km' => $payload['distanceKm'],
+    ]);
+    return omsorgcore_call($config, function ($cfg) use ($accessToken, $id, $request) {
+        $cfg->setAccessToken($accessToken);
+        return (new \OmsorgCoreClient\Api\MyFacilityDistancesApi(new \GuzzleHttp\Client(), $cfg))
+            ->apiMeFacilityDistancesIdPutWithHttpInfo($id, $request);
+    });
+}