# YazSes v2.9.0-dev.1 — Wave M opens: minimal-bandwidth AAC & text-intelligence (developer preview)

**Pre-release · not published** (publish workflows are pinned to `v0.x`/`v1.x`; v2 dev tags do
not ship). **v1.4.1 remains the stable release.** Every feature is **OFF by default**.

**Opens Wave M** (`design/vision/v2-research/15-wave-m.md`) — a fresh state-of-the-art round spanning
the lowest-bandwidth AAC input and new text-intelligence layers. Ten evidence-anchored features are
designed; this drop ships the first two pure cores.

## New in dev.1 (all off by default)

- **Vocal Morse** (ADR-v2-105, `[morsevox]`) — type by Morse using two distinguishable vocal sounds
  (short/long): full text from a single reliable vocalization, with adaptive timing that re-fits to
  your rhythm. `classify_pulse`/`classify_gap` + `MorseDecoder` (international Morse) +
  `adapt_dot_threshold`. The lowest-bandwidth input in the whole set — for locked-in, late-stage ALS,
  and severe-CP users who have essentially no other channel. Anchor: Google Gboard Morse (2018).
- **Checksum-Validated Data Entry** (ADR-v2-106, `[checkdigit]`) — dictated account/ID numbers run
  through the field's check-digit algorithm (Luhn, ISBN-10/13, Verhoeff), so a mis-heard digit is
  caught *before* it lands — with single-edit fix suggestions. `validate` + `suggest_fix`. Catches
  STT's single most damaging silent error. Anchor: Luhn/ISO-7812, IBAN MOD-97, ISBN, Verhoeff.

`yazses features` now lists **117 capabilities**. (Vocal Morse is experimental — `features enable`
requires `--force`.)

## Wave M remaining
Diagrams-as-Code · Interruptible Read-Back Proofreading · Style-Consistency Enforcer · Screenplay
Auto-Format · Semantic Line Breaks · Spoken Spaced-Repetition Capture · Suggestion-Mode Dictation ·
Acronym/Glossary Manager.

## Quality
1378 tests green across Linux × macOS × Windows on Python 3.11 and 3.12. Both new cores are
unit-tested to 100% with **no new dependency** (pure timing/arithmetic; the Morse pulse stream comes
from the existing hold detector). The default install and the v1 dictation path are unchanged.