hermes - 💡(How to fix) Fix fix(tui): /voice off does not clear TTS state, and status bar missing TTS indicator

Bug 1: /voice off does not clear HERMES_VOICE_TTS

In TUI mode (hermes --tui), running /voice tts then /voice off leaves TTS stuck ON:

/voice tts      → TTS ON
/voice off      → voice disabled, but TTS env var unchanged
/voice tts      → rejected: "enable voice mode first: /voice on"

The voice.toggle handler in tui_gateway/server.py only sets HERMES_VOICE="0" on off, but never clears HERMES_VOICE_TTS. Since the tts action branch requires _voice_mode_enabled() (which reads HERMES_VOICE), the user is deadlocked — TTS is ON but cannot be toggled off because voice mode is OFF.

Fix

Clear os.environ["HERMES_VOICE_TTS"] = "0" in the off branch.

Bug 2: TUI status bar does not show TTS state

The status bar only displays voice on or voice off with no indication of whether TTS speech output is active. The frontend (useMainApp.ts) tracks voiceEnabled, voiceRecording, and voiceProcessing, but has no voiceTts state — even though the voice.toggle RPC response already includes tts: true/false.

Fix

• Add voiceTts state + setVoiceTts setter
• Thread through all voice context interfaces
• Sync from voice.toggle RPC response in slash handler
• Display [tts] suffix in status bar: voice on [tts] / voice off

Changes

4 files, +15/-4 lines

• tui_gateway/server.py: clear HERMES_VOICE_TTS on voice off
• ui-tui/src/app/useMainApp.ts: voiceTts state + status bar display
• ui-tui/src/app/slash/commands/session.ts: sync tts from RPC response
• ui-tui/src/app/interfaces.ts: add setVoiceTts to voice context types