feat: sync deployed v1.0.0-rc.38-custom.42

Sync production source including routing, billing, Astra detection and public uptime. Update custom build instructions and license packaging.

relay/common/response_model.go

@@ -0,0 +1,48 @@
+package common
+
+import "strings"
+
+// ResponseModel records upstream declarations before response conversion. It is
+// diagnostic only: it must never change routing, pricing, or downstream output.
+type ResponseModel struct {
+	RequestedModel string `json:"requested_model"`
+	UpstreamModel  string `json:"upstream_model"`
+	ReturnedModel  string `json:"returned_model"`
+	Mismatch       bool   `json:"mismatch"`
+}
+
+// ObserveResponseModel retains the first differing model for inspection, with
+// mismatches taking priority over prefix or case-only differences. A later
+// matching or empty event cannot erase it. Only observe upstream declarations,
+// never models synthesized by a response converter.
+func (info *RelayInfo) ObserveResponseModel(model string) {
+	if info == nil || strings.TrimSpace(model) == "" || (info.OriginModelName == "gpt-6-astra" && info.AstraDetectionDisabled) {
+		return
+	}
+	if info.ResponseModel == nil {
+		info.ResponseModel = &ResponseModel{
+			RequestedModel: info.OriginModelName,
+			UpstreamModel:  info.GetUpstreamModelName(),
+		}
+	}
+	observation := info.ResponseModel
+	if observation.Mismatch {
+		return
+	}
+	mismatch := true
+	for _, expected := range []string{observation.RequestedModel, observation.UpstreamModel} {
+		if expected != "" && (strings.HasPrefix(model, expected) || strings.EqualFold(model, expected)) {
+			mismatch = false
+			break
+		}
+	}
+	if observation.RequestedModel == "gpt-6-astra" {
+		mismatch = strings.TrimSpace(model) != "gpt-6-astra"
+	}
+	if !mismatch && observation.ReturnedModel != "" &&
+		observation.ReturnedModel != observation.RequestedModel && observation.ReturnedModel != observation.UpstreamModel {
+		return
+	}
+	observation.ReturnedModel = model
+	observation.Mismatch = mismatch
+}