Brummel
6b7ee45e49
The headline acceptance of #61: the simple-moving-average worked example from design/models/0007-kernel-extensions.md must build via `ail build --alloc=rc`, run, and print the correct moving averages. Green ⇒ the kernel-tier `Series` library extension works end to end (ring-buffer push, financial-style indexing at index 0 = newest, count/total bookkeeping). The fixture is the 0007 worked example with two corrections applied, both verified against the live tool this session: - `>=` is not a surface symbol; the polymorphic Ord helper is `ge` (here on Int operands: total_count vs window size). - `print` on Float emits no trailing newline, so the four averages would concatenate into an unreadable blob. The emit branch now prints the average followed by `io/print_str "\n"`, so each average lands on its own line and the output is deterministic and assertable. (This legibility fix is also queued to be carried back into model 0007.) RED reason (right-for-the-right-reason): `ail check` rejects with [bare-cross-module-type-ref] on `Series` — the kernel-tier module does not exist yet. The fixture itself parses and is otherwise valid. Expected stdout was derived by probing the live %g float formatter independently (the SMA averages are 9/3, 16/3, 17/3, 16/3 over the stream 1,5,3,8,6,2 with window 3): `3.0\n5.33333\n5.66667\n5.33333`. GREEN side (the `series` kernel module + the five ops) is the next mini-mode iteration.