feat: add interface, plugin list loading, search, keyboard navigation

CLAUDE.md

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+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Project Overview
+
+illogical is a macOS Logic Pro plugin manager built with PySide6 and Briefcase.
+It uses `logic-plugin-manager` for Audio Units management and `pyqt-liquidglass` for UI styling.
+
+## Development Commands
+
+```bash
+# Type checking
+ty check
+
+# Linting and formatting
+ruff format
+ruff check --fix
+```
+
+NEVER run briefcase or any run commands by yourself
+
+## Custom Libraries
+
+This project uses two custom libraries. **Always fetch their documentation via Context7 before working with them:**
+
+- `logic-plugin-manager` - Audio Units plugin management
+- `pyqt-liquidglass` - macOS liquid glass UI effects for Qt
+
+## Code Principles
+
+- **Simplicity**: Write simple, straightforward code
+- **Readability**: Make code easy to understand
+- **Performance**: Consider performance without sacrificing readability
+- **Maintainability**: Write code that's easy to update
+- **Reusability**: Create reusable components and functions
+- **Less Code = Less Debt**: Minimize code footprint
+- **NEVER write comments** - code should be self-documenting
+
+## Context7 Usage
+
+Use Context7 MCP tools to fetch up-to-date documentation:
+1. Call `resolve-library-id` with the library name to get its ID
+2. Call `query-docs` with the library ID and your question