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/ui/detail_tab_task_test.go

@@ -0,0 +1,41 @@
+package ui
+
+import (
+	"testing"
+
+	"github.com/eslider/go-onlyoffice/cmd/office/model"
+)
+
+func TestDetailTabOrderTaskForm(t *testing.T) {
+	d := newDetailPane()
+	d.SetFocused(true)
+	d.LoadForm(model.Item{ID: "9", Kind: model.KindTask, Title: "T"}, model.FormFields{
+		PrimaryLabel: "Title", SecondaryLabel: "Description",
+		Primary: "Alpha", Secondary: "Beta",
+		HasTaskStatus: true, TaskStatus: model.TaskLifecycleOpen,
+		HasResponsible: true, ResponsibleID: "u1",
+		UserChoices: []model.UserOption{{ID: "u1", Name: "Alice"}},
+		ProjectTitle: "Proj", TimingSummary: "2026-01-01 → 2026-02-01",
+	})
+
+	stops := []entityField{
+		entityFieldPrimary, entityFieldSecondary, entityFieldStatus, entityFieldResponsible,
+	}
+	for i, want := range stops {
+		if d.form.field != want {
+			t.Fatalf("stop %d: field=%d want %d", i, d.form.field, want)
+		}
+		if d.TabForward() {
+			t.Fatalf("tab from stop %d should stay in pane", i)
+		}
+	}
+	if d.Zone() != detailZoneActions || d.actionIdx != 0 {
+		t.Fatalf("expected Save action, zone=%d idx=%d", d.Zone(), d.actionIdx)
+	}
+	if d.TabForward() {
+		t.Fatal("tab from Save should stay")
+	}
+	if d.actionIdx != 1 {
+		t.Fatalf("expected Close action, idx=%d", d.actionIdx)
+	}
+}