replace log.Fatal/os.Exit with error returns (#941)

* Use stdlib encoders
* Reduce some duplication
* Remove global pagination state
* Dedupe JSON detail types
* Bump golangci-lint

Reviewed-on: https://gitea.com/gitea/tea/pulls/941
Co-authored-by: techknowlogick <techknowlogick@gitea.com>
Co-committed-by: techknowlogick <techknowlogick@gitea.com>

modules/print/branch_test.go

@@ -0,0 +1,33 @@
+// Copyright 2026 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package print
+
+import (
+	"testing"
+
+	"code.gitea.io/sdk/gitea"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestPrintableBranchProtectionUsesSeparateWhitelists(t *testing.T) {
+	protection := &gitea.BranchProtection{
+		EnablePush:                  true,
+		ApprovalsWhitelistTeams:     []string{"approve-team"},
+		ApprovalsWhitelistUsernames: []string{"approve-user"},
+		MergeWhitelistTeams:         []string{"merge-team"},
+		MergeWhitelistUsernames:     []string{"merge-user"},
+		PushWhitelistTeams:          []string{"push-team"},
+		PushWhitelistUsernames:      []string{"push-user"},
+	}
+
+	result := printableBranch{
+		branch:     &gitea.Branch{Name: "main"},
+		protection: protection,
+	}.FormatField("protection", false)
+
+	assert.Contains(t, result, "- approving: approve-team/approve-user/")
+	assert.Contains(t, result, "- merging: merge-team/merge-user/")
+	assert.Contains(t, result, "- pushing: push-team/push-user/")
+	assert.NotContains(t, result, "- approving: approve-team/approve-user/merge-team/")
+}