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

projects/landvex/20-automation/intag/kontrollintelligens_ko.json

@@ -24,7 +24,7 @@
       "doman": "TRP",
       "kontext": "Vajrar avgerade på grund av korrosion. Underhåll var baserat på visuell inspektion vartannat år. Ingen kontinuerlig strukturell övervakning fanns.",
       "agent_id": "ki-01",
-      "las_tid": "2026-07-14T09:58:46.576545+00:00"
+      "las_tid": "2026-07-14T15:27:27.671400+00:00"
     },
     {
       "ko_id": "KI-003",