{"type":"assistant","timestamp":"2026-07-24T14:00:05Z","message":{"model":"claude-opus-4-8","role":"assistant","content":[{"type":"tool_use","id":"t1","name":"Bash","input":{"command":"cargo new demo\necho ready","description":"Scaffold the crate"}}]}}
{"type":"assistant","timestamp":"2026-07-24T14:00:10Z","message":{"model":"claude-opus-4-8","role":"assistant","content":[{"type":"tool_use","id":"t2","name":"Write","input":{"file_path":"demo/src/main.rs","content":"fn main() {\n println!(\"scriptorium\");\n}\n"}}]}}
{"type":"assistant","timestamp":"2026-07-24T14:00:15Z","message":{"model":"claude-opus-4-8","role":"assistant","content":[{"type":"tool_use","id":"t3","name":"Edit","input":{"file_path":"demo/src/main.rs","old_string":" println!(\"scriptorium\");","new_string":" println!(\"vellum\");","replace_all":true}}]}}
{"type":"assistant","timestamp":"2026-07-24T14:00:20Z","message":{"model":"claude-opus-4-8","role":"assistant","content":[{"type":"tool_use","id":"t4","name":"TodoWrite","input":{"todos":[{"content":"Scaffold the crate","status":"completed","activeForm":"Scaffolding"},{"content":"Wire the CLI","status":"in_progress","activeForm":"Wiring"},{"content":"Add coverage","status":"pending","activeForm":"Adding coverage"}]}}]}}