revamp projects, continue editing and add precommit hook for lastmod frontmatter

.githooks/pre-commit

@@ -5,6 +5,12 @@ NC='\033[0m' # No Color
 
 echo "Running pre-commit checks..."
 
+# Auto-update lastmod in content files (non-blocking)
+# Runs before other checks so lint/spell run on updated files
+if [ -x "$(dirname "$0")/update-lastmod.sh" ]; then
+    "$(dirname "$0")/update-lastmod.sh" || echo "⚠️  lastmod update script encountered an issue"
+fi
+
 # Track overall success/failure
 OVERALL_RESULT=0
 

.githooks/update-lastmod.sh

@@ -0,0 +1,37 @@
+#!/usr/bin/env bash
+# Auto-update lastmod field in staged content files
+# This script should never block a commit - errors are warnings only
+
+update_lastmod() {
+    local file="$1"
+
+    # Generate RFC3339 timestamp with timezone (e.g., 2025-11-08T16:19:07-06:00)
+    local tz_offset=$(date +%z)
+    local tz_formatted="${tz_offset:0:3}:${tz_offset:3:2}"  # Insert colon: -0600 -> -06:00
+    local now=$(date +%Y-%m-%dT%H:%M:%S)${tz_formatted}
+
+    # Only update if file has lastmod field
+    if grep -q "^lastmod:" "$file"; then
+        # Cross-platform sed -i (macOS vs Linux)
+        if [[ "$OSTYPE" == "darwin"* ]]; then
+            sed -i '' "s/^lastmod:.*$/lastmod: $now/" "$file"
+        else
+            sed -i "s/^lastmod:.*$/lastmod: $now/" "$file"
+        fi
+        git add "$file"
+        echo "  Updated lastmod in $file"
+    fi
+}
+
+# Get staged content files
+staged_files=$(git diff --cached --name-only --diff-filter=ACM | grep -E '^content/.*\.md$' || true)
+
+if [ -z "$staged_files" ]; then
+    exit 0
+fi
+
+for file in $staged_files; do
+    if [ -f "$file" ]; then
+        update_lastmod "$file" || echo "Warning: Failed to update lastmod in $file"
+    fi
+done