Release v0.1.2

Fix: AI manager now lazily initializes in cmd_open/cmd_url/cmd_find when an API key is already stored.

This resolves the issue where users with a previously saved API key would see 'AI services not ready' errors
when trying to analyze content. The fix adds lazy initialization logic similar to the quick_analyze function.

- Fixed pyproject.toml configuration issues with tool versions
- Improved release script to only update project version
- Applied code formatting via pre-commit hooks

Release v0.1.1: Switch entry points - TUI as default

Major improvements:
- slbrowser now launches interactive TUI by default
- slb is the direct CLI tool for command-line usage
- Fixed KeyboardInterrupt handling in TUI
- Updated documentation and usage examples
- Added CODE_WALKTHROUGH.md for developers

Breaking changes:
- Entry point behavior changed: use 'slbrowser' for TUI, 'slb' for CLI

Fix invalid classifier for PyPI release