Aligment Insight 0.38.0

Aligment Insight is a programming language where every value is an AI agent —
schemas, wages, budgets, gates and journals for organizations of agents.
This is the first public release: one file, one dependency, runs offline.

A measure can now walk into a list of records, which is what real documents
are made of: invoices with lines, orders with items, reports with findings.
Grammar unchanged.

Added

• sum(lines.price), avg, min, max and len accept a path that
  crosses a list of records: the tail is mapped over the items and the
  numbers are aggregated. Works in gate criteria, if and where clauses.

Fixed

• Such a path was rejected statically (AIL037: Invoice has no field "lines.price"); the schema walker now descends into [Line] and reports
  a typo at the leaf (lines.prices still fails, as it should).
• Two helpers (_named_criterion, _gate_label) had been lost during an
  earlier refactor and were restored; every gate label and AIL037 message
  uses them again.

Changed

• Selftest grew from 228 to 231 checks (a mapped sum in a gate, a mapped
  typo, a mapped invariant).