Add JARVIS-style TTS status reports with neural voice and HTTP API

[DannyNs]

• Neural TTS via edge-tts (en-GB-RyanNeural) with chunked playback for low-latency long text. First chunk plays immediately while rest generates in background. Falls back to platform TTS (SAPI/say/espeak-ng) offline.

• HTTP API server on port 7865: POST /api/speak lets any external tool (Claude Code, scripts, browser) trigger spoken feedback.

• Feedback hotkey mode (Cmd+Shift+F) pastes transcription with endpoint instructions so the receiving LLM can speak back via the API.

• Cross-platform: Python CLI, Windows native (C#), macOS native (Swift). Native apps shell out to edge-tts CLI with ffplay/afplay for headless playback, falling back to built-in speech synthesizers.

• Configurable via ~/.vibetotext/config.json: tts_enabled, tts_voice, tts_edge_rate, tts_edge_pitch, tts_rate, tts_volume.

  flowchart TD
      A[🎤 User speaks\nhold hotkey + speak] --> B[Whisper transcribes\nlocal, offline]
      B --> C{Which hotkey mode?}
  
      C -->|Ctrl+Shift| D[Transcribe]
      C -->|Alt+Shift| E[Cleanup\nGemini refines]
      C -->|Cmd+Alt| F[Plan\nGemini generates]
      C -->|Greppy| G[Greppy\nsemantic search]
      C -->|Cmd+Shift+F| H[Feedback mode]
  
      D --> I[paste_at_cursor\ntext lands in editor]
      E --> I
      F --> I
      G --> I
  
      I --> J[speak_status via edge-tts]
      J --> K[Chunked playback pipeline]
  
      K --> K1{text > 100 chars?}
      K1 -->|No| K2[Single mp3 → 🔊]
      K1 -->|Yes| K3[Rolling chunks of 2-3 sentences]
      K3 --> K4[Chunk 1: generate + play 🔊]
      K3 --> K5[Chunk 2: generate in parallel...]
      K5 --> K6[Play when ready 🔊]
  
      H --> L[Paste transcription\n+ endpoint info]
      L --> M[LLM reads paste\ne.g. Claude Code]
      M --> N[LLM does work, then calls\nPOST /api/speak]
  
      N --> O[HTTP API Server\n127.0.0.1:7865]
      O --> P[edge-tts → mp3\nffplay/afplay → 🔊]
  
      style A fill:#4CAF50,color:#fff
      style H fill:#FF9800,color:#fff
      style O fill:#2196F3,color:#fff
      style K2 fill:#8BC34A,color:#fff
      style K6 fill:#8BC34A,color:#fff
      style P fill:#8BC34A,color:#fff
  

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