Make SCUM logs live relay only

platform/api/run_log_relay_handlers.go

@@ -0,0 +1,38 @@
+package api
+
+import (
+	"net/http"
+
+	"browser.local/platform/domain"
+	"browser.local/platform/dto"
+	"browser.local/platform/repo"
+)
+
+type liveLogRelayCore interface {
+	RelayLiveLogBatch(domain.LogBatchIngest) (domain.LogBatchIngestResult, error)
+}
+
+// runLiveLogRelay accepts current Run output and immediately fans it out to
+// subscribers. It has no durable body or delivery acknowledgement contract.
+func (h *coreHandlers) runLiveLogRelay(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		writeMethodNotAllowed(w, http.MethodPost)
+		return
+	}
+	core, ok := h.core.(liveLogRelayCore)
+	if !ok {
+		writeServiceError(w, repo.ErrNotFound)
+		return
+	}
+	request, err := decodeJSON[dto.LogBatchIngestRequest](r)
+	if err != nil {
+		writeDecodeError(w, err)
+		return
+	}
+	result, err := core.RelayLiveLogBatch(request.ToDomain())
+	if err != nil {
+		writeServiceError(w, err)
+		return
+	}
+	writeJSON(w, http.StatusOK, dto.LogBatchIngestFromDomain(result))
+}