LangChain Ships Interrupt, Cursor Upgrades Canvases, and the AI Spend Reckoning

Three things converging today: LangChain dropped a wall of production-ready agent tooling at their Interrupt conference, Cursor made canvases significantly more useful with Design Mode and context reporting, and the conversation around AI spend ROI got sharper with Ravi Mehta's "tokenmaxxing" post landing alongside Wispr Flow publishing a rare, honest reliability postmortem.