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>

scripts/generate-lockfile.sh

@@ -0,0 +1,50 @@
+#!/usr/bin/env bash
+# Generate version lockfile for reproducible installations
+
+set -euo pipefail
+
+DOTFILES_DIR="$HOME/dotfiles"
+LOCKFILE="$DOTFILES_DIR/Brewfile.lock"
+TEMP_LOCK="/tmp/Brewfile.lock.new"
+
+# Colors
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+BLUE='\033[0;34m'
+NC='\033[0m'
+
+echo -e "${BLUE}Generating version lockfile...${NC}"
+
+# Create new lockfile
+cat > "$TEMP_LOCK" << EOF
+# Brewfile Lock - Version snapshot for reproducibility
+# Generated: $(date)
+# System: $(sw_vers -productVersion)
+
+EOF
+
+# Get versions of installed packages
+echo -e "${YELLOW}Capturing package versions...${NC}"
+
+echo "# Critical formulae" >> "$TEMP_LOCK"
+brew list --versions --formula | sort >> "$TEMP_LOCK"
+
+echo "" >> "$TEMP_LOCK"
+echo "# Casks" >> "$TEMP_LOCK"
+brew list --versions --cask | sort >> "$TEMP_LOCK"
+
+# Show differences if lockfile exists
+if [[ -f "$LOCKFILE" ]]; then
+    echo -e "${YELLOW}Changes since last lock:${NC}"
+    if ! diff "$LOCKFILE" "$TEMP_LOCK" > /dev/null; then
+        diff "$LOCKFILE" "$TEMP_LOCK" || true
+    else
+        echo "No changes detected"
+    fi
+fi
+
+# Replace lockfile
+mv "$TEMP_LOCK" "$LOCKFILE"
+
+echo -e "${GREEN}✅ Lockfile updated: $LOCKFILE${NC}"
+echo -e "${YELLOW}💡 Commit this file to track version changes${NC}"