4cfa369354
v3 retired the equipment-Tag binding; IUnsTreeService.LoadTagsForEquipmentAsync always returned empty, had no production caller, and EquipmentTagRow plus the always-zero tagCounts / EquipmentRow.TagCount plumbing existed only to feed it. All removed; the equipment badge count (virtual tags) is unchanged. Refs #745 Claude-Session: https://claude.ai/code/session_01Ub9hGmYLQvn9XETzw7CMsT