Cascade

Plan before building. Replace one large push with a short chain of bounded loops. Each loop makes one state change, proves it at the actual target, and writes an immutable boundary receipt before anything advances. The chain file is the portable contract across Codex, Claude, pi, compaction, and handoff; native task systems only mirror it.

Choose the mode

• PLAN — create the chain and task mirrors before BUILD.
• ADVANCE — execute the current loop's next ribbon step.
• TAKEOVER — after a session boundary or handoff, re-ground before advancing.

At PLAN, front-load anything the user must provide before becoming unavailable: accounts, credentials, target choices, destructive-action approval, or product decisions. Never bury a known human dependency in a later autonomous loop.

Declare the operating envelope