Revise Shared Goal

Start a conversation that revises this published goal, from the page alone.

wonderland goals.md puts revising in the open on the page: while the live conversation is open the page just returns to it, and when it is gone — the cookie lost, the session expired — this is the path. The share payload is the whole input: a fresh conversation is seeded with the goal exactly as the page carries it, and nothing else survives, so the first coach turn works from the page without re-asking what it already says.

Unsafe with all three browser signals, because it replaces whatever conversation this browser had — the same posture, rotation and response shape as POST /goals/session/reset, so a client swallows it with the code it already has. The published goal itself is untouched: what this settles is a new goal, and publishing it is its own deliberate act.