chore: initialize Gitea v1.27.2 fork

Includes direct password setup links in registration emails.

Assisted-by: Codex:GPT-5

modules/validation/regex_pattern_test.go

@@ -0,0 +1,59 @@
+// Copyright 2021 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package validation
+
+import (
+	"regexp"
+	"testing"
+
+	"gitea.com/go-chi/binding"
+)
+
+func getRegexPatternErrorString(pattern string) string {
+	if _, err := regexp.Compile(pattern); err != nil {
+		return err.Error()
+	}
+	return ""
+}
+
+func Test_RegexPatternValidation(t *testing.T) {
+	AddBindingRules()
+
+	regexValidationTestCases := []validationTestCase{
+		{
+			description: "Empty regex pattern",
+			data: TestForm{
+				RegexPattern: "",
+			},
+			expectedErrors: binding.Errors{},
+		},
+		{
+			description: "Valid regex",
+			data: TestForm{
+				RegexPattern: `(\d{1,3})+`,
+			},
+			expectedErrors: binding.Errors{},
+		},
+
+		{
+			description: "Invalid regex",
+			data: TestForm{
+				RegexPattern: "[a-",
+			},
+			expectedErrors: binding.Errors{
+				binding.Error{
+					FieldNames:     []string{"RegexPattern"},
+					Classification: ErrRegexPattern,
+					Message:        getRegexPatternErrorString("[a-"),
+				},
+			},
+		},
+	}
+
+	for _, testCase := range regexValidationTestCases {
+		t.Run(testCase.description, func(t *testing.T) {
+			performValidationTest(t, testCase)
+		})
+	}
+}