feat: Download Vosk model with sprc download vosk

[ftnext]

Vibe coded (refactoring based)

[Copilot]

Pull Request Overview

This PR introduces a new command ("sprc download vosk") to download and set up the Vosk model, refactoring the previous setup_vosk.py script into the CLI. Key changes include:

• Adding a new CLI command in speech_recognition/cli.py for downloading and unzipping the Vosk model.
• Removing the legacy setup_vosk.py script.
• Updating setup.py, README.rst, and the GitHub Actions workflow to support the new command.

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
speech_recognition/cli.py	Introduces download_vosk_model function and CLI command for vosk.
setup_vosk.py	Entirely removed to replace functionality with CLI command.
setup.py	Adds a console script entry point for sprc CLI tool.
README.rst	Updates instructions for Vosk model download and directory usage.
.github/workflows/unittests.yml	Updates workflow to use the new sprc download vosk command.

Comments suppressed due to low confidence (1)

speech_recognition/cli.py:34

• Consider verifying that the zip archive consistently extracts to a directory named after the model filename (without extension). If the archive structure deviates, the copy operation may fail; adding a check or more robust extraction logic could prevent potential issues.

extracted_dir = os.path.join(temp_dir, model_name)