Add Vosk Offline Speech‑to‑Text Integration to GreenProductive

[Lumb3]

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Summary

This pull request introduces a new feature that allows users to add tasks using voice input instead of typing. The feature is powered by the Vosk offline speech‑to‑text model, enabling full functionality without requiring an internet connection.

Users can now click the microphone icon in the UI and simply speak their task, which will automatically populate the task input field.

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What’s Included

1. New Backend Speech Service

• backend/speech_service.py
  A Python script that loads the Vosk model and streams microphone audio for transcription.

2. PyInstaller Build Configuration

• speech_service.spec
  Used to package the Python script into a standalone binary so users do not need Python installed.

3. Binary Build Output (Ignored in Git)

• build/ and dist/ folders
  These are generated by PyInstaller and are included in .gitignore.
  The dist/ folder contains the compiled binary:

  dist/speech_service
  

  This binary must be shipped with the application for speech recognition to work.

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4. Electron Integration

• main.js updated to:
  • Launch the speech_service binary as a child process
  • Stream transcription results back to the renderer
  • Provide IPC handlers for:
    • startSpeechService
    • stopSpeechService
    • onSpeechFinal
    • onSpeechPartial

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5. UI Enhancements

• Added a microphone button to the task input area.
• When activated, the microphone triggers the speech service and inserts recognized text directly into the task field.
• The icon visually toggles between active/inactive states.

Screenshot for reference:

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Important Note for Reviewers

Because GitHub cannot store platform‑specific binaries, the speech_service binary is not included in this PR.
To test the feature locally:

1. Install Python + Vosk model
2. Run PyInstaller using speech_service.spec to generate:

dist/speech_service

OR
4. Download the prebuilt binary from test_branch → Releases and place it in the dist/ folder

Alternatively, we can discuss:

• Automating builds through CI

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Why This Feature Matters

• Enables hands‑free task entry
• Improves accessibility
• Works fully offline
• Integrates seamlessly with the existing UI

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