feat: add VS Code installation following spilled coffee principle

[atxtechbro]

Problem Statement

Need VS Code installed for read-only code browsing purposes, aligning with the spilled coffee principle. While the current workflow emphasizes tmux + git worktrees + Claude Code for OSE principle adherence, VS Code serves a specific use case for visual code exploration.

Requirements

• Command code . should open VS Code in the current directory
• Installation must be automated and reproducible (spilled coffee principle)
• Script should detect and handle existing installations gracefully
• Must work across Linux and macOS environments
• Should integrate with existing dotfiles installation patterns

Proposed Implementation

Minimal Approach

1. Create utils/install-vscode.sh following the pattern of existing installers (e.g., install-neovim.sh)
2. Add VS Code installation to appropriate setup flow
3. Ensure proper PATH configuration for the code command

Installation Script Structure

#!/bin/bash
# VS Code Installation Utility
# Automated installation following the spilled coffee principle

# Source common logging functions
source "${SCRIPT_DIR}/logging.sh"

install_vscode() {
    # Check if already installed
    # Platform-specific installation:
    #   - macOS: brew install --cask visual-studio-code
    #   - Linux: snap/apt/official Microsoft repo
    # Verify installation
    # Set up PATH if needed
}

Definition of Done

• utils/install-vscode.sh script created
• Script handles multiple platforms (Linux/macOS)
• Script detects existing installations
• code . command works after installation
• Script follows existing logging patterns
• Script is idempotent (can run multiple times safely)
• Documentation updated if needed

Notes

• This aligns with OSE principle by providing a read-only view tool
• Not replacing the primary tmux + Claude Code workflow
• Follows spilled coffee principle for reproducible setup