Add comprehensive system enhancements and shell configurations

Following the μέτρον principle of durable, thoughtful solutions:

Shell Configuration:
- Add refined .zshrc with modular architecture
- Include .p10k.zsh for Powerlevel10k prompt
- Add .zprofile for login shell configuration
- Update aliases with new dotfiles management tools

System Management Tools:
- safe-update.sh: System updates with rollback protection
- detect-drift.sh: Configuration drift detection
- system-health.sh: Comprehensive health monitoring
- generate-lockfile.sh: Version tracking for reproducibility

Documentation:
- ARCHITECTURE.md: Philosophy and design rationale
- USAGE.md: Practical guide and troubleshooting

Other Updates:
- Update symlinks.sh to manage all config files
- Add .vimrc configuration
- Create Brewfile.lock for version pinning

These enhancements provide visibility, safety, and maintainability
while following the prime directive of prioritizing durability.

🖖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Brewfile.lock

@@ -0,0 +1,18 @@
+# Brewfile Lock - Version snapshot for reproducibility
+# Generated: $(date)
+# This file locks versions for critical system components
+
+# Format: package_name=version_installed
+# Use: brew list --versions > Brewfile.lock.new to update
+
+# Critical System Tools (should be pinned)
+# antidote=
+# powerlevel10k=
+# fzf=
+# git=
+# python@3.13=
+
+# Instructions:
+# 1. Run: ~/dotfiles/scripts/generate-lockfile.sh
+# 2. Review changes before committing
+# 3. Use lockfile for reproducible installs