feat(office): users admin UI, table rendering, and user save fixes

Add Users list/detail with ACL toggles and library people update/status APIs.
Fix project table layout and ANSI-safe cell rendering, and decode array
responses from people/status so saves no longer fail on JSON unmarshal.

Co-authored-by: Cursor <cursoragent@cursor.com>

cmd/office/model/user_test.go

@@ -0,0 +1,58 @@
+package model_test
+
+import (
+	"testing"
+
+	"github.com/eslider/go-onlyoffice/cmd/office/model"
+)
+
+func TestNavUsersLeafReturnsListSpec(t *testing.T) {
+	tree := model.DefaultNavTree()
+	var found int = -1
+	for i := 0; i < tree.VisibleCount(); i++ {
+		n, ok := tree.NodeAtVisible(i)
+		if ok && n.Label == "Users" {
+			found = i
+			break
+		}
+	}
+	if found < 0 {
+		t.Fatal("Users node not found")
+	}
+	tree.SetCursor(found)
+	spec, ok := tree.CurrentListSpec()
+	if !ok || spec.Subject != model.SubjectUsers {
+		t.Fatalf("users spec=%v ok=%v", spec, ok)
+	}
+	if tree.IsExpandable(found) {
+		t.Fatal("Users should be a direct leaf, not a branch")
+	}
+}
+
+func TestBuildUserColumnsOmitsIDAndDisplayName(t *testing.T) {
+	items := []model.Item{{
+		ID: "1", Title: "jdoe", Kind: model.KindUser,
+		Raw: map[string]any{
+			"id": "1", "userName": "jdoe", "displayName": "John Doe",
+			"email": "j@example.com", "registrationDate": "2024-01-02T00:00:00",
+		},
+	}}
+	cols := model.BuildColumns(model.SubjectUsers, items)
+	want := []string{"_sel", "userName", "registration", "status", "email"}
+	if len(cols) != len(want) {
+		t.Fatalf("got %v", columnKeys(cols))
+	}
+	for i, key := range want {
+		if cols[i].Key != key {
+			t.Fatalf("col[%d]=%q want %q", i, cols[i].Key, key)
+		}
+	}
+}
+
+func columnKeys(cols []model.TableColumn) []string {
+	out := make([]string, len(cols))
+	for i, c := range cols {
+		out[i] = c.Key
+	}
+	return out
+}