Harden dotfiles with error handling, automation, and standard tooling

[Copilot]

The dotfiles lacked resilience and automation. Configurations would fail if optional dependencies were missing, and setup required manual symlink creation.

Shell Configuration Hardening

.zshrc - Added conditional checks to prevent errors when plugins/tools aren't installed:

# Before: hard failure if not installed
source /opt/homebrew/share/zsh-autosuggestions/zsh-autosuggestions.zsh

# After: graceful degradation
if [[ -f /opt/homebrew/share/zsh-autosuggestions/zsh-autosuggestions.zsh ]]; then
  source /opt/homebrew/share/zsh-autosuggestions/zsh-autosuggestions.zsh
fi

.oshen_floor - Conditional PATH construction only adds existing directories

Git Enhancements

.gitconfig - Added aliases and defaults:

• Common operations: st, co, ci, lg (graph log), undo, unstage
• Sensible defaults: push.autoSetupRemote, fetch.prune, diff.colorMoved

Automation & Standards

• install.sh - One-command setup with automatic backup, symlink creation, and dependency checking
• .editorconfig - Consistent formatting across editors
• .gitattributes - Normalized line endings
• .gitignore - Comprehensive patterns (OS files, IDEs, backups)
• README.md - Installation guide and feature documentation

All configurations use $HOME instead of hardcoded paths for portability.

Original prompt

Any improvements we could make?

Created from VS Code.

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