voice declarations: mark Flextalk voices no-pitch; refresh contract snapshot

docs/TTS-DESIGN.md

@@ -137,10 +137,13 @@ Implemented on the Veskslop side (2026-09-15):
   `VESKSLOP_TTS_PITCH` only when the value is set.
 - The HTTP provider adds `speed` and `pitch` to the request body only when set.
 - The TTS panel has speed and pitch sliders; changes are saved to the daemon preferences.
-- Command mode advertises voices through `VESKSLOP_TTS_VOICES`
-  (`id`, `id|Name`, `id|Name|gender`, or `id|Name|gender|language`, comma separated). While a
-  custom command is set, the engine's declared voices replace the espeak list, so no misleading
-  espeak entries appear. Reading `/voices` for the HTTP provider is still future work.
+- Command mode advertises voices through `VESKSLOP_TTS_VOICES`. Entries are separated by commas or
+  newlines and use `id`, `id|Name`, `id|Name|gender`, `id|Name|gender|language`, or
+  `id|Name|gender|language|flags`, where flags are `+`-separated. The `no-pitch` flag marks a voice
+  that ignores pitch; `/api/audio/tts/voices` then reports `supportsPitch: false` and the TTS panel
+  disables the pitch slider. While a custom command is set, the engine's declared voices replace
+  the espeak list, so no misleading espeak entries appear. Reading `/voices` for the HTTP provider
+  is still future work.
 
 Do not encode settings into the voice string (for example `anna+speed1.2`). It breaks voice lists
 and is hard to validate.
@@ -236,7 +239,8 @@ record what the engine needs to interpret, add, or hide._
 - Mapping implemented in `setup/vekslop-tts.sh`: `speed 1.0` = the voice's natural rate
   (150 MSTTS, 300 Flextalk), scaled by the multiplier and clamped to the engine range.
   `pitch` for MSTTS maps ±12 semitones to engine units `100 ± 6.25·st`, clamped to 50-200.
-  Pitch is a no-op for Flextalk voices.
+  Pitch is a no-op for Flextalk voices; the wrapper's `--voices` output marks
+  `keith-bell` and `kerry-watson` with the `no-pitch` flag so the UI disables the slider.
 - `{setting}` is unused; the wrapper reads `VESKSLOP_TTS_SPEED` and
   `VESKSLOP_TTS_PITCH` from the environment when Veskslop later exports them.
 
@@ -299,6 +303,10 @@ _Added 2026-09-15._
   the client's display.
 - **Voice declarations**: list only usable IDs in `VESKSLOP_TTS_VOICES`. Veskslop hides the
   espeak list while a custom command is set, so a missing declaration means an empty voice list,
-  not a fallback.
+  not a fallback. The list accepts commas or newlines, and the optional `no-pitch` flag tells the
+  UI to grey out the pitch slider for that voice.
+- **Flextalk pitch**: confirmed that pitch is a no-op for Keith Bell and Kerry Watson. Mark those
+  entries `no-pitch` so users are not offered a control that does nothing. Speed applies to every
+  voice and needs no flag.
 - **Licensing**: keep the engine DLLs and voice data local and out of any repository; Veskslop
   never bundles or redistributes them.