feat: 修复 AI 风险语义并隔离 Mock 数据

server-go/internal/database/migrate.go

@@ -8,12 +8,12 @@ import (
 	"github.com/golang-migrate/migrate/v4"
 	"github.com/golang-migrate/migrate/v4/database/postgres"
 	"github.com/golang-migrate/migrate/v4/source/iofs"
-	"silk-server-go/migrations"
 	"gorm.io/gorm"
+	"silk-server-go/migrations"
 )
 
 // CurrentSchemaVersion 是当前后端代码期望的迁移版本。
-const CurrentSchemaVersion = "1"
+const CurrentSchemaVersion = "2"
 
 // RunMigrations 使用嵌入式 SQL 迁移文件将数据库升级到最新版本。
 func RunMigrations(db *gorm.DB) error {

server-go/internal/database/migrate_test.go

@@ -100,4 +100,8 @@ func TestEmbeddedMigrationsIncludeBaseline(t *testing.T) {
 	if version != 1 {
 		t.Fatalf("expected baseline migration version 1, got %d", version)
 	}
+	next, err := driver.Next(version)
+	if err != nil || next != 2 {
+		t.Fatalf("expected risk assessment migration version 2, got %d (err %v)", next, err)
+	}
 }