chore: initial commit of ai site platform

Co-authored-by: Cursor <cursoragent@cursor.com>

platform/internal/handler/openapi_serve.go

@@ -0,0 +1,18 @@
+package handler
+
+import (
+	_ "embed"
+	"net/http"
+)
+
+//go:embed openapi.yaml
+var openapiYAML []byte
+
+func openapiHandler() http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/yaml; charset=utf-8")
+		w.Header().Set("Cache-Control", "public, max-age=60")
+		w.WriteHeader(http.StatusOK)
+		_, _ = w.Write(openapiYAML)
+	}
+}