Tax-y Kathy is living for Zo-day. New taxes targeting the rich pushed by Gov. Kathy Hochul this week may appease socialist Mayor Zohran Mamdani in the short-term, but insiders warned they are so slapdash they’ll open cans of worms for the Big Apple’s future. Hochul floated a proposal for a pied-à-terre tax on luxury second homes and entered discussions on a transfer levy on $1 million residences bought with cash as she and state lawmakers entered their sixth week of overtime haggling over the