feat(openai): 支持后台配置 Responses API 路由

backend/internal/repository/account_repo_compact_extra_test.go

@@ -12,3 +12,14 @@ func TestShouldEnqueueSchedulerOutboxForExtraUpdates_CompactCapabilityKeysAreRel
 		t.Fatalf("expected compact capability updates to enqueue scheduler outbox")
 	}
 }
+
+func TestShouldEnqueueSchedulerOutboxForExtraUpdates_OpenAIResponsesCapabilityKeysAreRelevant(t *testing.T) {
+	updates := map[string]any{
+		"openai_responses_mode":      "force_chat_completions",
+		"openai_responses_supported": false,
+	}
+
+	if !shouldEnqueueSchedulerOutboxForExtraUpdates(updates) {
+		t.Fatalf("expected responses capability updates to enqueue scheduler outbox")
+	}
+}

backend/internal/repository/scheduler_cache.go

@@ -546,6 +546,8 @@ func filterSchedulerExtra(extra map[string]any) map[string]any {
 		"responses_websockets_v2_enabled",
 		"openai_ws_enabled",
 		"openai_ws_force_http",
+		"openai_responses_mode",
+		"openai_responses_supported",
 	}
 	filtered := make(map[string]any)
 	for _, key := range keys {

backend/internal/repository/scheduler_cache_unit_test.go

@@ -18,6 +18,8 @@ func TestBuildSchedulerMetadataAccount_KeepsOpenAIWSFlags(t *testing.T) {
 			"openai_oauth_responses_websockets_v2_enabled": true,
 			"openai_oauth_responses_websockets_v2_mode":    service.OpenAIWSIngressModePassthrough,
 			"openai_ws_force_http":                         true,
+			"openai_responses_mode":                        "force_chat_completions",
+			"openai_responses_supported":                   false,
 			"mixed_scheduling":                             true,
 			"unused_large_field":                           "drop-me",
 		},
@@ -28,6 +30,8 @@ func TestBuildSchedulerMetadataAccount_KeepsOpenAIWSFlags(t *testing.T) {
 	require.Equal(t, true, got.Extra["openai_oauth_responses_websockets_v2_enabled"])
 	require.Equal(t, service.OpenAIWSIngressModePassthrough, got.Extra["openai_oauth_responses_websockets_v2_mode"])
 	require.Equal(t, true, got.Extra["openai_ws_force_http"])
+	require.Equal(t, "force_chat_completions", got.Extra["openai_responses_mode"])
+	require.Equal(t, false, got.Extra["openai_responses_supported"])
 	require.Equal(t, true, got.Extra["mixed_scheduling"])
 	require.Nil(t, got.Extra["unused_large_field"])
 }