Anthropic rejects the Pentagon's final offer on AI safeguards, refusing to remove guardrails for surveillance and autonomous weapons; Goldman Sachs says AI investment added basically zero to US economic growth in 2025; Google launches Nano Banana 2 image model with Pro-quality results at Flash speed; Ladybird browser uses AI agents to port 25,000 lines of C++ to Rust in two weeks; and the agent economy raises an unanswered question — when AI signs an SLA and doesn't deliver, who settles it?