Error handling

[sepideh-abedini]

Summary

Improve the logging in the project by using loguru and introducing logging annotations.

Clickup Ticket(s): https://app.clickup.com/t/868gqbcen

Type of Change

• 🐛 Bug fix (non-breaking change that fixes an issue)
• [ x] ✨ New feature (non-breaking change that adds functionality)
• 💥 Breaking change (fix or feature that would cause existing functionality to not work as expected)
• 📝 Documentation update
• 🔧 Refactoring (no functional changes)
• ⚡ Performance improvement
• 🧪 Test improvements
• 🔒 Security fix

Changes Made

• Removed custom logging configurations and used a unified loguru config
• Add a separate log sink to save logs in a file
• Add a separate logger to log interactions with LLM
• Use @logger.catch decorator to catch exceptions and log errors
• Added a custom @alog annotation for simple logging of method completion

Testing

• [ x] Tests pass locally (uv run pytest tests/)
• [ x] Type checking passes (uv run mypy <src_dir>)
• [ x] Linting passes (uv run ruff check src_dir/)
• Manual testing performed (describe below)

Checklist

• [ x] Code follows the project's style guidelines
• [ x] Self-review of code completed
• [ x] Documentation updated (if applicable)
• [ x] No sensitive information (API keys, credentials) exposed