fix: resolve swiftlint strict violations

- Fix modifier order: nonisolated before private in SQLFileParser
- Remove explicit return in single-expression closure in ImportDialog

Author: datlechin

TablePro/Core/Utilities/SQLFileParser.swift

@@ -29,7 +29,7 @@ final class SQLFileParser: Sendable {
 
     /// Characters that can start multi-character sequences (comments, escapes)
     /// and must not be processed at chunk boundaries without a lookahead character.
-    private nonisolated static func isMultiCharSequenceStart(_ char: Character) -> Bool {
+    nonisolated private static func isMultiCharSequenceStart(_ char: Character) -> Bool {
         char == "-" || char == "/" || char == "\\" || char == "*"
     }
 

TablePro/Views/Import/ImportDialog.swift

@@ -359,7 +359,7 @@ struct ImportDialog: View {
             let encoding = config.encoding
             let parser = SQLFileParser()
             let count = try await Task.detached {
-                return try await parser.countStatements(url: url, encoding: encoding)
+                try await parser.countStatements(url: url, encoding: encoding)
             }.value
             statementCount = count
         } catch {