Fix missing dependencies and empty __init__.py

[harshitgavita-07]

Summary

Fixes critical dependency issues and incomplete module initialization in TRIBE v2.

Changes Made

1. pyproject.toml

• Added missing dependencies: pandas>=2.2.0, pydantic>=2.5.0, requests>=2.31.0, tqdm>=4.66.0
• Fixed version pins:
  • numpy==2.2.6 → numpy>=2.2.6,<3.0
  • transformers → transformers>=4.40.0
• Removed invalid dependency: pip (package manager, not a library)
• Added new optional dependency groups:
  • transcription: For audio transcription (uvx)
  • datasets: For dataset downloads (datalad, openneuro-py, nltk)
  • demo: For demo functionality (gtts, langdetect, spacy, soundfile)
  • all: Combines all optional groups
• Fixed VCS dependency format: Changed to PEP 508 compliant format for nltk_contrib

2. tribev2/grids/init.py

• Added license header: Copyright notice matching project style
• Added module docstring: Describes grid configurations and runners
• Added imports: Exposes base_config, mini_config, default_config
• Added __all__: Explicit public API declaration

Impact

Without these fixes:

• Users get ModuleNotFoundError for pandas, pydantic, requests, tqdm
• pip install fails with invalid dependency specification
• grids module cannot be imported as a package
• VCS dependencies fail to install

Testing

• All Python files compile without syntax errors
• TOML structure is valid
• Dependency specifications follow PEP 508

@sdascoli @vgarg1603 - Please review these dependency fixes.