feat(admin): add reset-atemschutz option to data management tab

backend/src/routes/admin.routes.ts

@@ -290,6 +290,7 @@ router.delete('/cleanup/reset-buchhaltung-konten', authenticate, requirePermissi
 router.delete('/cleanup/reset-buchhaltung-bankkonten', authenticate, requirePermission('admin:write'), (req, res) => { req.params.resetTarget = 'reset-buchhaltung-bankkonten'; return resetHandler(req, res); });
 router.delete('/cleanup/reset-checklist-history', authenticate, requirePermission('admin:write'), (req, res) => { req.params.resetTarget = 'reset-checklist-history'; return resetHandler(req, res); });
 router.delete('/cleanup/reset-persoenliche-ausruestung', authenticate, requirePermission('admin:write'), (req, res) => { req.params.resetTarget = 'reset-persoenliche-ausruestung'; return resetHandler(req, res); });
+router.delete('/cleanup/reset-atemschutz', authenticate, requirePermission('admin:write'), (req, res) => { req.params.resetTarget = 'reset-atemschutz'; return resetHandler(req, res); });
 router.delete('/cleanup/issues-all', authenticate, requirePermission('admin:write'), (req, res) => { req.params.resetTarget = 'issues-all'; return resetHandler(req, res); });
 
 router.delete(
@@ -334,6 +335,7 @@ const RESET_TARGETS: Record<string, (confirm: boolean) => Promise<{ count: numbe
   'reset-buchhaltung-konten':            (c) => cleanupService.resetBuchhaltungKonten(c),
   'reset-buchhaltung-bankkonten':        (c) => cleanupService.resetBuchhaltungBankkonten(c),
   'reset-persoenliche-ausruestung':      (c) => cleanupService.resetPersoenlicheAusruestung(c),
+  'reset-atemschutz':                    (c) => cleanupService.resetAtemschutz(c),
 };
 
 const resetHandler = async (req: Request, res: Response): Promise<void> => {

backend/src/services/cleanup.service.ts

@@ -239,6 +239,18 @@ class CleanupService {
     return { count, deleted: true };
   }
 
+  async resetAtemschutz(confirm: boolean): Promise<CleanupResult> {
+    if (!confirm) {
+      const { rows } = await pool.query('SELECT COUNT(*)::int AS count FROM atemschutz_traeger');
+      return { count: rows[0].count, deleted: false };
+    }
+    const { rows } = await pool.query('SELECT COUNT(*)::int AS count FROM atemschutz_traeger');
+    const count = rows[0].count;
+    await pool.query('TRUNCATE atemschutz_traeger CASCADE');
+    logger.info(`Cleanup: truncated atemschutz_traeger (${count} rows)`);
+    return { count, deleted: true };
+  }
+
   async resetPersoenlicheAusruestung(confirm: boolean): Promise<CleanupResult> {
     if (!confirm) {
       const { rows } = await pool.query('SELECT COUNT(*)::int AS count FROM persoenliche_ausruestung WHERE geloescht_am IS NULL');

frontend/src/components/admin/DataManagementTab.tsx

@@ -50,6 +50,9 @@ const TAB_CLEANUP: Record<string, CleanupSection[]> = {
 };
 
 const TAB_RESET: Record<string, ResetSection[]> = {
+  atemschutz: [
+    { key: 'reset-atemschutz', label: 'Atemschutz-Daten zuruecksetzen', description: 'Alle Atemschutz-Eintraege (G26-Untersuchungen, Leistungstests, Lehrgaenge) fuer alle Benutzer loeschen.' },
+  ],
   fahrzeuge: [
     { key: 'reset-persoenliche-ausruestung', label: 'Persoenliche Ausruestung zuruecksetzen', description: 'Alle persoenlichen Ausruestungszuweisungen loeschen. Zuordnungen in Anfragen werden zurueckgesetzt.' },
   ],
@@ -82,6 +85,7 @@ const TABS = [
   { key: 'system', label: 'System' },
   { key: 'kalender', label: 'Kalender' },
   { key: 'fahrzeuge', label: 'Fahrzeuge & Ausruestung' },
+  { key: 'atemschutz', label: 'Atemschutz' },
   { key: 'bestellungen', label: 'Bestellungen' },
   { key: 'buchhaltung', label: 'Buchhaltung' },
   { key: 'checklisten', label: 'Checklisten & Issues' },