Runner: Analyse null erlaubt, Adresse optional (R10)

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

runner/src/validate.js

@@ -48,7 +48,7 @@ export function validateJob(body) {
     }
   }
   let analytics;
-  if (body.analytics !== undefined) {
+  if (body.analytics !== undefined && body.analytics !== null) {
     const a = body.analytics;
     if (!a || typeof a !== 'object' || Array.isArray(a)) return { ok: false, error: 'Ungültige Analyse-Angaben' };
     if (typeof a.siteKey !== 'string' || !RE_SITE_KEY.test(a.siteKey)) return { ok: false, error: 'Ungültiger Analyse-Schlüssel' };
@@ -59,6 +59,7 @@ export function validateJob(body) {
     for (const [k, max] of [['company', 200], ['address', 300], ['email', 200]]) {
       const v = pr[k];
       // eslint-disable-next-line no-control-regex
+      if (k === 'address' && (v === undefined || v === '')) { privacy[k] = ''; continue; }
       if (typeof v !== 'string' || !v.trim() || v.length > max || /[\x00-\x1f\x7f]/.test(v)) return { ok: false, error: `Ungültige Analyse-Datenschutzangabe: ${k}` };
       privacy[k] = v;
     }