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/get-context.js

@@ -0,0 +1,22 @@
+'use strict'
+
+const { Writable } = require('stream')
+const parentPort = require('worker_threads').parentPort
+
+async function run (opts) {
+  return new Writable({
+    autoDestroy: true,
+    write (chunk, enc, cb) {
+      if (parentPort) {
+        parentPort.postMessage({
+          code: 'EVENT',
+          name: 'context',
+          args: opts.$context
+        })
+      }
+      cb()
+    }
+  })
+}
+
+module.exports = run