EJClaw e67cd2e93f feat(tts): add [기본] neutral emotion + raise base speed to 1.5x ...

User reported the emotion samples sounded the same and the speed change wasn't
noticeable. Two changes:
- Add a "base" (기본/neutral) emotion at speed 1.0x so the plain base voice can
  be selected explicitly via a [기본] tag and auditioned against the others.
- Bump the WSAI_TTS_SPEED default 1.15 -> 1.5 for a clearly faster base voice.
  Emotion multipliers scale off base, so every emotion speeds up together.

Also extends gen_emotion_samples.py to emit one wav per emotion (incl. 기본)
plus a stitched all-in-one, so each emotion can be delivered as a separate clip.

Verified: 29 tests pass; match_emotion('기본') == 'base'; per-emotion synthesis
at base 1.5 produces distinct clip durations (base 4.9s vs happy 3.3s).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

2026-08-23 00:08:21 +09:00

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