feat: add precise diagnostics and optional client copy logging controls

database/database.go

@@ -10,6 +10,8 @@ import (
 	"fmt"
 	"strings"
 	"time"
+
+	"git.yuntuo.hk/k2safe/go-omni/internal/configdiag"
 )
 
 type Config struct {
@@ -43,10 +45,10 @@ func (c Config) PoolConfig() PoolConfig {
 
 func (c Config) Validate() error {
 	if strings.TrimSpace(c.Driver) == "" {
-		return errors.New("database driver is required")
+		return configdiag.New("driver", "is required")
 	}
 	if strings.TrimSpace(c.DSN) == "" {
-		return errors.New("database DSN is required")
+		return configdiag.New("dsn", "is required")
 	}
 	return c.PoolConfig().Validate()
 }