v0.5.3

• Move the selection to the start of the session: the generated block, START.md and
  the pointer skills now say "before opening any source file for a change or a review,
  select one workflow and name it, or NONE", and step 4 ends with "then open the code
  and investigate the way the workflow says". The v0.5.2 remeasure showed sessions
  reading the local contract and investigating for 50 to 100 turns before the kit,
  then hitting their cap on START.md. Existing installations pick it up on sync.