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

quixzoom-landing-fixed/ms/index.html

@@ -6,6 +6,7 @@
   <title>quiXzoom — Rakam Dunia. Dapatkan Bayaran. | Jadi Zoomer</title>
   <meta name="description" content="quiXzoom membayar anda untuk merakam infrastruktur, alam semula jadi, dan persekitaran bandar. Tiada yuran platform. Dilancarkan Ogos 2026.">
   <link rel="canonical" href="https://quixzoom.asia/ms/">
+  <meta http-equiv="refresh" content="0; url=https://quixzoom.asia/ms/">
   <link rel="alternate" hreflang="ms" href="https://quixzoom.asia/ms/">
   <link rel="alternate" hreflang="zh-CN" href="https://quixzoom.asia/zh-cn/">
   <link rel="alternate" hreflang="ja" href="https://quixzoom.asia/ja/">