Cross-milestone hops are high-context work and I cannot compact my own
context window. Adding a `brainstorm`-on-an-unspec'd-roadmap-item rule
that forces a bounce-back lets the user decide whether the next
milestone wants a fresh session or a continuation of the current one,
instead of consuming tens of thousands of tokens on a fresh spec Q&A
on top of whatever the just-closed milestone left behind.
Mechanics: Iron Law gains a fourth clause; Direction-Freedom-Bouncebacks
list a fourth trigger with the rationale spelled out; Step 3 reroutes
"new milestone → brainstorm" through the trigger; Problem-state
notification list, Common Rationalisations, and Red Flags all gain
the corresponding entries.
Brummel
78c26b3596