feat(orgs): Pipeline-Sprache als Org-Setting im Verwaltungsportal

- OrgCreate / OrgUpdate / OrgResponse um output_language (de | en).
- routers/organizations.py persistiert die Sprache nach create/update
  via shared.services.org_settings.set_org_setting.
- _enrich_org liest output_language aus organization_settings (Default de).
- Frontend: Dropdown im Modal Neue Organisation und im Org-Edit-Formular,
  Auto-Befuellung aus org.output_language. Cache-Buster auf app.js gebumpt.

Phase 7 von 8 (eng_demo / Org-Sprache).

src/static/dashboard.html

@@ -166,6 +166,14 @@
                     <option value="false">Deaktiviert</option>
                   </select>
                 </div>
+                <div class="form-group">
+                  <label for="editOrgLanguage">Pipeline-Sprache</label>
+                  <select id="editOrgLanguage">
+                    <option value="de">Deutsch</option>
+                    <option value="en">English</option>
+                  </select>
+                  <small class="text-secondary">Bestimmt die Ausgabesprache der KI (Lagebild, Faktencheck, Recherche) und der sichtbarsten UI-Elemente fuer alle Nutzer dieser Organisation.</small>
+                </div>
                 <div style="display: flex; gap: 8px; margin-top: 16px;">
                   <button type="submit" class="btn btn-primary">Speichern</button>
                   <button type="button" class="btn btn-danger" id="deleteOrgBtn">Organisation löschen</button>
@@ -499,6 +507,14 @@
             <label for="newOrgSlug">Slug (URL-freundlich)</label>
             <input type="text" id="newOrgSlug" required pattern="[a-z0-9-]+" placeholder="z.B. bundespolizei">
           </div>
+          <div class="form-group">
+            <label for="newOrgLanguage">Pipeline-Sprache</label>
+            <select id="newOrgLanguage">
+              <option value="de" selected>Deutsch</option>
+              <option value="en">English</option>
+            </select>
+            <small class="text-secondary">Steuert die Ausgabesprache der KI-Pipeline (Lagebild, Faktencheck, Recherche) und die sichtbarsten UI-Strings im Monitor.</small>
+          </div>
           <div id="newOrgError" class="error-msg" style="display:none"></div>
         </div>
         <div class="modal-footer">
@@ -841,7 +857,7 @@
     </div>
   </div>
 
-  <script src="/static/js/app.js?v=20260509j"></script>
+  <script src="/static/js/app.js?v=20260513a"></script>
   <script src="/static/js/sources.js?v=20260509d"></script>
   <script src="/static/js/source-health.js?v=20260509l"></script>
   <script src="/static/js/audit.js?v=20260509d"></script>

src/static/js/app.js

@@ -213,6 +213,8 @@ async function openOrg(orgId) {
 
     document.getElementById("editOrgName").value = org.name;
     document.getElementById("editOrgActive").value = org.is_active ? "true" : "false";
+    const langEl = document.getElementById("editOrgLanguage");
+    if (langEl) langEl.value = org.output_language || "de";
 
     loadOrgUsers(orgId);
     loadOrgLicenses(orgId);
@@ -424,6 +426,7 @@ function setupForms() {
       await API.post("/api/orgs", {
         name: document.getElementById("newOrgName").value,
         slug: document.getElementById("newOrgSlug").value,
+        output_language: document.getElementById("newOrgLanguage").value || "de",
       });
       closeModal("modalNewOrg");
       document.getElementById("newOrgForm").reset();
@@ -518,6 +521,7 @@ function setupForms() {
       await API.put(`/api/orgs/${currentOrgId}`, {
         name: document.getElementById("editOrgName").value,
         is_active: document.getElementById("editOrgActive").value === "true",
+        output_language: document.getElementById("editOrgLanguage").value || "de",
       });
       openOrg(currentOrgId);
       loadOrgs();