cmd/creator-web/server.go

@@ -28,7 +28,11 @@ import (
 const (
 	maxRequestBytes         = 8 << 10
 	maxAdvisoryRequestBytes = 20 << 10
-	maxResponseBytes        = 1 << 20
+	// Chat responses may contain a locally generated image encoded as base64.
+	// Keep the gateway limit aligned with the bounded media transport (32 MiB),
+	// otherwise a successfully generated image is incorrectly surfaced as an
+	// unavailable runtime to the human.
+	maxResponseBytes = 32 << 20
 )
 
 //go:embed static

cmd/creator-web/server_test.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"bytes"
 	"encoding/json"
 	"fmt"
 	"io"
@@ -13,6 +14,25 @@ import (
 	"git.cin.su/m/Assistant/contracts/interaction"
 )
 
+func TestMaxResponseBytesAcceptsGeneratedImagePayload(t *testing.T) {
+	// A 1024px PNG can exceed the former 1 MiB gateway limit once base64
+	// encoded. The browser gateway must forward that successful core response.
+	payload, err := json.Marshal(interaction.ChatMessageResponse{
+		GeneratedImageContentType: "image/png",
+		GeneratedImageBase64:      strings.Repeat("A", 2<<20),
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	var decoded interaction.ChatMessageResponse
+	if err := decodeStrictJSON(bytes.NewReader(payload), maxResponseBytes, &decoded); err != nil {
+		t.Fatalf("generated image response must fit gateway limit: %v", err)
+	}
+	if len(decoded.GeneratedImageBase64) != 2<<20 {
+		t.Fatalf("generated image payload was truncated: %d", len(decoded.GeneratedImageBase64))
+	}
+}
+
 func TestLocalChatContextIncludesDomovoyIdentityAndOptionalActiveProject(t *testing.T) {
 	context := localChatContext(interaction.ChatMessageResponse{AssistantName: "Фея", ActiveProjectName: "Домовой"})
 	if len(context) != 2 || context[0].SourceID != "domovoy" || !strings.Contains(context[0].Text, "Ты — Фея") || !strings.Contains(context[0].Text, "Меня зовут Фея") || context[1].Text != "Текущий проект: Домовой" {