fix: localize toml parse errors

internal/agents/store.go

@@ -2,7 +2,6 @@ package agents
 
 import (
 	"bufio"
-	"errors"
 	"fmt"
 	"os"
 	"path/filepath"
@@ -136,7 +135,7 @@ func parseSimpleTOML(input string) (map[string]string, error) {
 			return values, fmt.Errorf("第 %d 行重复字段名 %q", lineNumber, key)
 		}
 
-		value, err := parseTOMLString(raw, scanner)
+		value, err := parseTOMLString(raw, scanner, lineNumber)
 		if err != nil {
 			return values, err
 		}
@@ -167,27 +166,27 @@ func isValidBareKey(key string) bool {
 	return true
 }
 
-func parseTOMLString(raw string, scanner *bufio.Scanner) (string, error) {
+func parseTOMLString(raw string, scanner *bufio.Scanner, lineNumber int) (string, error) {
 	if strings.HasPrefix(raw, `"""`) {
 		block := strings.TrimPrefix(raw, `"""`)
 		for !strings.Contains(block, `"""`) && scanner.Scan() {
 			block += "\n" + scanner.Text()
 		}
 		if !strings.Contains(block, `"""`) {
-			return "", errors.New("未闭合的多行字符串")
+			return "", fmt.Errorf("第 %d 行未闭合的多行字符串", lineNumber)
 		}
 		value, trailing, _ := strings.Cut(block, `"""`)
 		if strings.TrimSpace(trailing) != "" {
-			return "", errors.New("多行字符串后存在不支持的内容")
+			return "", fmt.Errorf("第 %d 行多行字符串后存在不支持的内容", lineNumber)
 		}
 		return value, nil
 	}
 	if !strings.HasPrefix(raw, `"`) {
-		return "", errors.New("仅支持字符串字段")
+		return "", fmt.Errorf("第 %d 行仅支持字符串字段", lineNumber)
 	}
 	value, err := strconv.Unquote(raw)
 	if err != nil {
-		return "", err
+		return "", fmt.Errorf("第 %d 行字符串字段语法无效", lineNumber)
 	}
 	return value, nil
 }