feat: add in-process adapter research contract

internal/tools/send_message_uia_adapter_test.go

@@ -2,6 +2,7 @@ package tools
 
 import (
 	"context"
+	"strings"
 	"testing"
 )
 
@@ -103,6 +104,31 @@ func TestSendMessageConnectorFromEnvBuildsUiaRPAConnector(t *testing.T) {
 	}
 }
 
+func TestSendMessageConnectorFromEnvBuildsInProcessContractConnector(t *testing.T) {
+	t.Setenv(EnvSendConnectorMode, "in_process_contract")
+
+	connector := NewSendMessageConnectorFromEnv()
+	if connector == nil {
+		t.Fatalf("NewSendMessageConnectorFromEnv returned nil for in_process_contract config")
+	}
+	result, err := connector.ExecuteSendMessage(context.Background(), SendMessageConnectorRequest{
+		TargetType:           "direct",
+		TargetID:             "u1",
+		TargetRef:            "contact:u1",
+		ContentText:          "hello",
+		ContentSHA256:        strings.Repeat("a", 64),
+		ContentLength:        5,
+		IdempotencyKeySHA256: strings.Repeat("b", 64),
+		ExecutionMode:        sendMessageProductionMode,
+	})
+	if err != nil {
+		t.Fatalf("in_process_contract should return structured blocked result, got err=%v", err)
+	}
+	if result.Accepted || result.ProductionEnabled || result.ErrorCode != "broute_in_process_contract_only" {
+		t.Fatalf("unexpected in-process contract result: %+v", result)
+	}
+}
+
 type fakeUiaHelperCaller struct {
 	response uiaHelperResponse
 	err      error