fix(kiro): use portable timestamp precision

Signed-off-by: warren <warren.chen830@gmail.com>

Author: warren830

backend/plugins/kiro/models/chat_log.go

@@ -44,7 +44,7 @@ type KiroChatLog struct {
 	UserId string `gorm:"type:varchar(64);index" json:"userId"`
 	// IdentityStoreId is the stripped prefix, retained for auditability.
 	IdentityStoreId string    `gorm:"type:varchar(32)" json:"identityStoreId"`
-	Timestamp       time.Time `gorm:"type:datetime(6);index" json:"timestamp"`
+	Timestamp       time.Time `gorm:"precision:6;index" json:"timestamp"`
 	// ChatTriggerType is MANUAL or INLINE_CHAT per the docs; only MANUAL has
 	// been observed. Not validated against a fixed set.
 	ChatTriggerType string `gorm:"type:varchar(20)" json:"chatTriggerType"`

backend/plugins/kiro/models/completion_log.go

@@ -40,7 +40,7 @@ type KiroCompletionLog struct {
 
 	UserId          string    `gorm:"type:varchar(64);index" json:"userId"`
 	IdentityStoreId string    `gorm:"type:varchar(32)" json:"identityStoreId"`
-	Timestamp       time.Time `gorm:"type:datetime(6);index" json:"timestamp"`
+	Timestamp       time.Time `gorm:"precision:6;index" json:"timestamp"`
 
 	// FileName has no path component; see the type comment.
 	FileName      string `gorm:"type:varchar(255);index" json:"fileName"`

backend/plugins/kiro/models/migrationscripts/archived/init.go

@@ -127,7 +127,7 @@ type KiroChatLog struct {
 	RequestId          string    `gorm:"primaryKey;type:varchar(64)"`
 	UserId             string    `gorm:"type:varchar(64);index" json:"userId"`
 	IdentityStoreId    string    `gorm:"type:varchar(32)" json:"identityStoreId"`
-	Timestamp          time.Time `gorm:"type:datetime(6);index" json:"timestamp"`
+	Timestamp          time.Time `gorm:"precision:6;index" json:"timestamp"`
 	ChatTriggerType    string    `gorm:"type:varchar(20)" json:"chatTriggerType"`
 	ModelId            *string   `gorm:"type:varchar(100)" json:"modelId"`
 	HasPrompt          bool      `gorm:"index" json:"hasPrompt"`
@@ -152,7 +152,7 @@ type KiroCompletionLog struct {
 	RequestId          string    `gorm:"primaryKey;type:varchar(64)"`
 	UserId             string    `gorm:"type:varchar(64);index" json:"userId"`
 	IdentityStoreId    string    `gorm:"type:varchar(32)" json:"identityStoreId"`
-	Timestamp          time.Time `gorm:"type:datetime(6);index" json:"timestamp"`
+	Timestamp          time.Time `gorm:"precision:6;index" json:"timestamp"`
 	FileName           string    `gorm:"type:varchar(255);index" json:"fileName"`
 	FileExtension      string    `gorm:"type:varchar(50)" json:"fileExtension"`
 	HasCustomization   bool      `json:"hasCustomization"`

backend/plugins/kiro/models/timestamp_schema_test.go

@@ -0,0 +1,55 @@
+/*
+Licensed to the Apache Software Foundation (ASF) under one or more
+contributor license agreements.  See the NOTICE file distributed with
+this work for additional information regarding copyright ownership.
+The ASF licenses this file to You under the Apache License, Version 2.0
+(the "License"); you may not use this file except in compliance with
+the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package models
+
+import (
+	"sync"
+	"testing"
+
+	"github.com/apache/incubator-devlake/plugins/kiro/models/migrationscripts/archived"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	mysqlDriver "gorm.io/driver/mysql"
+	postgresDriver "gorm.io/driver/postgres"
+	"gorm.io/gorm/schema"
+)
+
+func TestLogTimestampUsesPortableMicrosecondPrecision(t *testing.T) {
+	logModels := []struct {
+		name  string
+		model any
+	}{
+		{name: "chat runtime model", model: &KiroChatLog{}},
+		{name: "completion runtime model", model: &KiroCompletionLog{}},
+		{name: "chat migration model", model: &archived.KiroChatLog{}},
+		{name: "completion migration model", model: &archived.KiroCompletionLog{}},
+	}
+
+	for _, logModel := range logModels {
+		t.Run(logModel.name, func(t *testing.T) {
+			sch, err := schema.Parse(logModel.model, &sync.Map{}, schema.NamingStrategy{})
+			require.NoError(t, err)
+
+			field := sch.LookUpField("Timestamp")
+			require.NotNil(t, field)
+			assert.Equal(t, 6, field.Precision)
+			assert.Equal(t, "datetime(6) NULL", mysqlDriver.New(mysqlDriver.Config{}).DataTypeOf(field))
+			assert.Equal(t, "timestamptz(6)", postgresDriver.New(postgresDriver.Config{}).DataTypeOf(field))
+		})
+	}
+}