fix: Add proper identifier quoting for SQLite3 non-English characters

- Wrap identifiers in double quotes in EscapeSpecificIdentifier
- Use proper escaping for table names in COUNT queries  
- Escape table and column names in CREATE TABLE statements
- Fixes "near '-': syntax error" with Chinese characters and special chars

Fixes #502

Co-authored-by: Anguel <modelorona@users.noreply.github.com>

Author: claude[bot]

core/src/plugins/sqlite3/add.go

@@ -26,7 +26,7 @@ func (p *Sqlite3Plugin) GetCreateTableQuery(schema string, storageUnit string, c
 	var columnDefs []string
 
 	for _, column := range columns {
-		parts := []string{column.Key}
+		parts := []string{p.EscapeIdentifier(column.Key)}
 
 		// Handle primary key with INTEGER type for auto-increment
 		if primary, ok := column.Extra["primary"]; ok && primary == "true" {
@@ -47,5 +47,5 @@ func (p *Sqlite3Plugin) GetCreateTableQuery(schema string, storageUnit string, c
 		columnDefs = append(columnDefs, strings.Join(parts, " "))
 	}
 
-	return fmt.Sprintf("CREATE TABLE %s (%s)", storageUnit, strings.Join(columnDefs, ", "))
+	return fmt.Sprintf("CREATE TABLE %s (%s)", p.EscapeIdentifier(storageUnit), strings.Join(columnDefs, ", "))
 }

core/src/plugins/sqlite3/sqlite3.go

@@ -90,7 +90,8 @@ func (p *Sqlite3Plugin) GetTableNameAndAttributes(rows *sql.Rows, db *gorm.DB) (
 	}
 
 	var rowCount int64
-	rowCountRow := db.Raw(fmt.Sprintf("SELECT COUNT(*) FROM '%s'", tableName)).Row()
+	escapedTableName := p.EscapeIdentifier(tableName)
+	rowCountRow := db.Raw(fmt.Sprintf("SELECT COUNT(*) FROM %s", escapedTableName)).Row()
 	err := rowCountRow.Scan(&rowCount)
 	if err != nil {
 		return "", nil

core/src/plugins/sqlite3/utils.go

@@ -49,5 +49,5 @@ func (p *Sqlite3Plugin) GetColTypeQuery() string {
 
 func (p *Sqlite3Plugin) EscapeSpecificIdentifier(identifier string) string {
 	identifier = strings.Replace(identifier, "\"", "\"\"", -1)
-	return identifier
+	return "\"" + identifier + "\""
 }