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/routers/organizations.py

@@ -25,6 +25,15 @@ async def _enrich_org(db: aiosqlite.Connection, row: aiosqlite.Row) -> dict:
     lic = await cursor.fetchone()
     org["license_status"] = lic["status"] if lic else "none"
     org["license_type"] = lic["license_type"] if lic else ""
+
+    # output_language aus organization_settings (Default 'de')
+    cursor = await db.execute(
+        "SELECT value FROM organization_settings WHERE organization_id = ? AND key = 'output_language'",
+        (org["id"],),
+    )
+    lang_row = await cursor.fetchone()
+    org["output_language"] = lang_row["value"] if lang_row else "de"
+
     return org
 
 
@@ -57,6 +66,10 @@ async def create_organization(
     org_id = cursor.lastrowid
     await db.commit()
 
+    # output_language als organization_settings-Eintrag persistieren
+    from shared.services.org_settings import set_org_setting
+    await set_org_setting(db, org_id, "output_language", data.output_language)
+
     cursor = await db.execute("SELECT * FROM organizations WHERE id = ?", (org_id,))
     new_row_obj = await cursor.fetchone()
     await log_action(
@@ -105,6 +118,11 @@ async def update_organization(
         await db.execute(f"UPDATE organizations SET {set_clause} WHERE id = ?", values)
         await db.commit()
 
+    # output_language separat ueber organization_settings setzen
+    if data.output_language is not None:
+        from shared.services.org_settings import set_org_setting
+        await set_org_setting(db, org_id, "output_language", data.output_language)
+
     after = await row_to_dict(db, "organizations", org_id)
     await log_action(
         db, admin, get_client_ip(request),