Twenty-eight weeks, six milestones, one score to move
Durations are estimates for one person; the order is the point. The contract comes before the next components, ownership comes before agent write tools, and the planner (the parachute sentence) is the acceptance test that everything before it exists to enable.
M0 to M2, before any agent writes
Chart guard, strict schema, validate, outputs.
MongoDB and OAuth built already A+.
Ownership split and a base layer.
M3, the acceptance test
Clearance, AgentRun, model proxy, real adapters.
airframe.* tools and the planner.
The parachute sentence passes live; a seeded bad run fails; killing Clearance still ends every run.
M4 and M5, proof
Six agents, six Preflight cases, six seeded bad runs.