Add Wyoming voice stack to pyinfra + landscape doc

- Move piper-compose.yaml / whisper-compose.yaml from repo root into
  pyinfra/framework/compose/{piper,whisper}.yml; bind paths shifted to
  /srv/docker/{piper,whisper}/data on the box.
- deploy.py registers both stacks and provisions the data dirs.
- Homepage gets a "Voice" group with informational tiles (Wyoming has
  no web UI, so tiles show container status without click-through).
- New VoiceModels.md captures the May 2026 STT/TTS landscape, why the
  current Wyoming defaults aren't SOTA, and concrete upgrade paths
  (whisper-large-v3-turbo + faster-whisper-server, Kokoro, Sesame CSM,
  F5-TTS for cloning).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

pyinfra/framework/compose/homepage/services.yaml

@@ -73,6 +73,21 @@
         server: localhost-docker
         container: phoenix
 
+- Voice:
+    # Wyoming-protocol services have no web UI; tiles are informational
+    # (container status + port). Click-through goes nowhere meaningful.
+    - Whisper:
+        icon: mdi-microphone-message
+        description: Speech-to-text (Wyoming :10300)
+        server: localhost-docker
+        container: wyoming-whisper
+
+    - Piper:
+        icon: mdi-account-voice
+        description: Text-to-speech (Wyoming :10200)
+        server: localhost-docker
+        container: wyoming-piper
+
 - External:
     - SearXNG:
         icon: searxng.svg