⚡️ Replace pre-commit with lefthook for faster git hooks

[dryan]

Switches from pre-commit to lefthook for improved performance and better integration with uv workflow.

Changes

• 🗑️ Removed
• ✨ Added with equivalent hooks
• 🔧 Configured to use uv run for proper environment activation
• ⚡️ Enabled parallel execution for faster hook runs

Benefits

• Faster execution (written in Go vs Python)
• Parallel hook execution
• Better uv integration
• Maintains all existing checks (ruff + version validation)