Brummel
73fbb240be
The `series` library extension shipped (35a9bc6); model 0007's
Series section was an aspirational sketch with systematic defects
that no longer match the live tool. Bring it to present-state per
the honesty-rule:
- STATUS: the library-extension milestone now reads step-1 shipped
(primitive Series over {Int, Float}, Bool deferred), with SoA
step-2 (#62) still pending. INDEX.md row updated to match.
- The `series` code listing is replaced with the shipped source
(crates/ailang-kernel/src/series/source.ail, doc-strings elided),
cited as the source of truth. Every defect the sketch carried is
corrected in the shipped form it now shows: param-in (a Int Float)
not (... Bool); `(new RawBuf lookback)` with no type-arg; bare `a`
for the element type variable (not `(con a)`); forall-bound op
signatures; `lt` not `<`; and the at-index formula with the
correct sign on i — which already matched the section's own prose
(`head - 1 - i + 2*lookback`), so the sketch was internally
inconsistent and the prose was right.
- The SMA worked example uses `ge` (not the non-existent `>=`) and
emits each average followed by a newline, matching the committed
pin fixture so the doc and the test agree.
- The "four constructs not in today's AILang" framing is now
present-state: the mechanisms shipped via raw_buf, Series itself
via the step-1 library extension.
Both edited module blocks parse against the live tool.
refs #61