feat(branch): add +all and +set-default

- branch +all: full branch-name list via GET /branches/all
  (AllListService), no paging — handy for scripting and completion.
- branch +set-default: switch the repository default branch via
  PATCH /branches/update_default_branch (manager permission),
  which the CLI previously had no way to do.

Production-verified on gitlink.org.cn (full name list returned;
default branch update status 0). 2 unit tests, README examples,
bilingual i18n keys.

Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>

README.md

@@ -446,6 +446,10 @@ gitlink-cli branch +create --name feature/new-feature
 # Delete a branch
 gitlink-cli branch +delete --name feature/old-feature
 
+# All branch names at once (no paging) and default-branch switch
+gitlink-cli branch +all --owner myname --repo myrepo
+gitlink-cli branch +set-default --owner myname --repo myrepo -n develop
+
 # Protect a branch
 gitlink-cli branch +protect --name main
 

internal/i18n/locales/en-US.json

@@ -5,10 +5,12 @@
   "cmd.auth.logout.short": "Logout from GitLink",
   "cmd.auth.short": "Authentication commands",
   "cmd.auth.status.short": "Show authentication status",
+  "cmd.branch.all.short": "List all branch names (no paging)",
   "cmd.branch.create.short": "Create a branch",
   "cmd.branch.delete.short": "Delete a branch",
   "cmd.branch.list.short": "List branches",
   "cmd.branch.protect.short": "Set branch protection",
+  "cmd.branch.set_default.short": "Set the repository default branch",
   "cmd.branch.short": "Branch operations",
   "cmd.branch.unprotect.short": "Remove branch protection",
   "cmd.ci.builds.short": "List CI builds",

internal/i18n/locales/zh-CN.json

@@ -5,10 +5,12 @@
   "cmd.auth.logout.short": "退出 GitLink 登录",
   "cmd.auth.short": "认证命令",
   "cmd.auth.status.short": "显示认证状态",
+  "cmd.branch.all.short": "列出全部分支名（不分页）",
   "cmd.branch.create.short": "创建分支",
   "cmd.branch.delete.short": "删除分支",
   "cmd.branch.list.short": "列出分支",
   "cmd.branch.protect.short": "设置分支保护",
+  "cmd.branch.set_default.short": "设置仓库默认分支",
   "cmd.branch.short": "分支操作",
   "cmd.branch.unprotect.short": "移除分支保护",
   "cmd.ci.builds.short": "列出 CI 构建",

shortcuts/branch/branch.go

@@ -80,6 +80,42 @@ func Shortcuts(translators ...*i18n.Translator) []*common.Shortcut {
 				return ctx.Output(env)
 			},
 		},
+		{
+			Name:        "all",
+			Description: tr.T("cmd.branch.all.short"),
+			Flags:       []common.Flag{},
+			Run: func(ctx *common.RuntimeContext) error {
+				if err := ctx.ResolveOwnerRepo(); err != nil {
+					return err
+				}
+				env, err := ctx.CallAPI("GET", "/v1"+ctx.RepoPath()+"/branches/all", nil)
+				if err != nil {
+					return err
+				}
+				return ctx.Output(env)
+			},
+		},
+		{
+			Name:        "set-default",
+			Description: tr.T("cmd.branch.set_default.short"),
+			Flags: []common.Flag{
+				{Name: "name", Short: "n", Usage: tr.T("flag.branch.name"), Required: true},
+			},
+			Run: func(ctx *common.RuntimeContext) error {
+				if err := ctx.ResolveOwnerRepo(); err != nil {
+					return err
+				}
+				name, err := ctx.RequireArg("name")
+				if err != nil {
+					return err
+				}
+				env, err := ctx.CallAPI("PATCH", "/v1"+ctx.RepoPath()+"/branches/update_default_branch", map[string]interface{}{"name": name})
+				if err != nil {
+					return err
+				}
+				return ctx.Output(env)
+			},
+		},
 		{
 			Name:        "protect",
 			Description: tr.T("cmd.branch.protect.short"),

shortcuts/branch/branch_test.go

@@ -216,3 +216,38 @@ func TestBranchUnprotectHTTPError(t *testing.T) {
 		t.Fatal("expected error for HTTP 500")
 	}
 }
+
+func TestBranchAllUsesAllEndpoint(t *testing.T) {
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.Method != "GET" || r.URL.Path != "/v1/owner/repo/branches/all.json" {
+			t.Fatalf("unexpected request: %s %s", r.Method, r.URL.Path)
+		}
+		writeJSON(w, []interface{}{map[string]interface{}{"name": "master"}})
+	}))
+	defer server.Close()
+
+	if err := runShortcut(t, server, "all", nil); err != nil {
+		t.Fatalf("all failed: %v", err)
+	}
+}
+
+func TestBranchSetDefaultPatchesName(t *testing.T) {
+	var payload map[string]interface{}
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.Method != "PATCH" || r.URL.Path != "/v1/owner/repo/branches/update_default_branch.json" {
+			t.Fatalf("unexpected request: %s %s", r.Method, r.URL.Path)
+		}
+		if err := json.NewDecoder(r.Body).Decode(&payload); err != nil {
+			t.Fatalf("decode payload: %v", err)
+		}
+		writeJSON(w, map[string]interface{}{"status": float64(0), "message": "success"})
+	}))
+	defer server.Close()
+
+	if err := runShortcut(t, server, "set-default", map[string]string{"name": "develop"}); err != nil {
+		t.Fatalf("set-default failed: %v", err)
+	}
+	if payload["name"] != "develop" {
+		t.Fatalf("expected name=develop, got %v", payload["name"])
+	}
+}