dev-api: add developer portal, OpenAPI spec, and Flatenbadet case study

- New /developers/ page with API docs, SDKs, pricing, use cases
- OpenAPI 3.0 spec for Orders, Missions, Photos, Analytics
- Case study: Glasskiosken i Flatenbadet — complete ROI analysis
- Updated /order/ with recurring missions and frequency dropdown

services/frilans-payout/node_modules/zod/v3/errors.js

@@ -0,0 +1,9 @@
+import defaultErrorMap from "./locales/en.js";
+let overrideErrorMap = defaultErrorMap;
+export { defaultErrorMap };
+export function setErrorMap(map) {
+    overrideErrorMap = map;
+}
+export function getErrorMap() {
+    return overrideErrorMap;
+}