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/thread-stream/test/yarnrc.yml

@@ -0,0 +1,7 @@
+nodeLinker: pnp
+pnpMode: loose
+pnpEnableEsmLoader: false
+packageExtensions:
+  debug@*:
+    dependencies:
+      supports-color: '*'