North-star metric for the 100-satisfied-installs/day goal.

Satisfied = activated (made tool calls) + breadth (≥8 distinct tools) + retained (active ≥7d after first seen). Returns: • daily new-machine rate (last 14d) vs the 100/day target, • satisfaction rate over a mature cohort (first seen 7–37d ago, so it had time to retain), • the breadth→retention cohort comparison that justifies the breadth gate.