Brings Gitea mirror up to date with the current state of the
openclaw/openclaw PR branch, including all fixes from Codex review:
- Namespaced directive keys (fishaudio_*/fish_* prefixes only)
- Strict latency directive validation with warnings
- Code quality cleanup, s2 model removal
- Contract and directive parsing tests
- README updated with prefixed directive docs
Source: Conan-Scott/openclaw@9787ef6e (feat/fish-audio-speech-provider)
