Add systemd install script and improve reset-site.sh resilience

- Add scripts/systemd/install.sh to handle placeholder substitution
  (__PROJECT_DIR__, __USER__) and systemd unit installation in one command
- Simplify manual install instructions in SettingsPage and config.sh to
  reference the new install script
- Preserve existing home.html and home.css in reset-site.sh instead of
  overwriting with templates
- Add comments/ and partials/ to preserved directories list
- Fix nav removal in mkdocs.yml using Python regex instead of fragile sed

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

admin/src/pages/SettingsPage.tsx

@@ -1216,7 +1216,7 @@ function SystemUpgradeTab() {
           reinstall manually:
         </Paragraph>
         <Paragraph code copyable style={{ fontSize: 12, marginBottom: 0 }}>
-          {`cd ~/changemaker.lite && sudo cp scripts/systemd/changemaker-upgrade.* /etc/systemd/system/ && sudo systemctl daemon-reload && sudo systemctl enable --now changemaker-upgrade.path`}
+          {`cd ~/changemaker.lite && sudo ./scripts/systemd/install.sh`}
         </Paragraph>
       </Card>
 

config.sh

@@ -1049,8 +1049,7 @@ install_upgrade_watcher() {
     else
       warn "Failed to install systemd units (sudo may have failed)"
       warn "Install manually later:"
-      echo -e "  ${CYAN}sudo cp scripts/systemd/changemaker-upgrade.* /etc/systemd/system/${NC}"
+      echo -e "  ${CYAN}cd ~/changemaker.lite && sudo ./scripts/systemd/install.sh${NC}"
-      echo -e "  ${CYAN}sudo systemctl daemon-reload && sudo systemctl enable --now changemaker-upgrade.path${NC}"
       UPGRADE_WATCHER="manual"
     fi
 

reset-site.sh

@@ -46,7 +46,7 @@ for item in "$DOCS_DIR"/*/; do
     [ ! -d "$item" ] && continue
     dirname="$(basename "$item")"
     case "$dirname" in
-        hooks|assets|javascripts|overrides|stylesheets|blog) ;;
+        hooks|assets|javascripts|overrides|stylesheets|blog|comments|partials) ;;
         *) LOST_DIRS+=("$dirname") ;;
     esac
 done
@@ -84,7 +84,7 @@ mkdir -p "$TEMP_DIR"
 
 # Backup custom directories if they exist
 echo "📦 Preserving custom directories..."
-for dir in hooks assets javascripts overrides stylesheets blog; do
+for dir in hooks assets javascripts overrides stylesheets blog comments partials; do
     if [ -d "$DOCS_DIR/$dir" ]; then
         echo "  - Preserving $dir/"
         cp -r "$DOCS_DIR/$dir" "$TEMP_DIR/"
@@ -195,7 +195,7 @@ EOF
 
 # Restore custom directories
 echo "♻️ Restoring custom directories..."
-for dir in hooks assets javascripts overrides stylesheets blog; do
+for dir in hooks assets javascripts overrides stylesheets blog comments partials; do
     if [ -d "$TEMP_DIR/$dir" ]; then
         echo "  - Restoring $dir/"
         cp -r "$TEMP_DIR/$dir" "$DOCS_DIR/"
@@ -205,7 +205,10 @@ for dir in hooks assets javascripts overrides stylesheets blog; do
     fi
 done
 
-# Create simplified home.html
+# Create simplified home.html (only if not restored from backup)
+if [ -f "$DOCS_DIR/overrides/home.html" ]; then
+    echo "🏠 Existing home.html preserved (skipping template creation)"
+else
 echo "🏠 Creating simplified home template..."
 cat > "$DOCS_DIR/overrides/home.html" << 'EOF'
 {% extends "main.html" %}
@@ -261,7 +264,12 @@ cat > "$DOCS_DIR/overrides/home.html" << 'EOF'
 {% endblock %}
 EOF
 
-# Create simplified home.css
+fi
+
+# Create simplified home.css (only if not restored from backup)
+if [ -f "$DOCS_DIR/stylesheets/home.css" ]; then
+    echo "🎨 Existing home.css preserved (skipping template creation)"
+else
 echo "🎨 Creating simplified home styles..."
 cat > "$DOCS_DIR/stylesheets/home.css" << 'EOF'
 /* Simple home page styles */
@@ -393,10 +401,20 @@ cat > "$DOCS_DIR/stylesheets/home.css" << 'EOF'
 }
 EOF
 
+fi
+
 # Update mkdocs.yml - remove nav section
 echo "📋 Updating mkdocs.yml (removing nav)..."
-# Use sed to remove nav section (everything from "nav:" to the next top-level key)
+# Use Python to safely remove the nav block without eating adjacent sections
-sed -i '/^nav:/,/^[a-zA-Z]/{ /^nav:/d; /^[a-zA-Z]/!d; }' "$MKDOCS_DIR/mkdocs.yml"
+python3 -c "
+import re, sys
+with open(sys.argv[1], 'r') as f:
+    content = f.read()
+# Remove 'nav:' line and all following indented lines (the entire nav block)
+content = re.sub(r'^nav:[ \t]*\n(?:[ \t]+.*\n)*', '', content, flags=re.MULTILINE)
+with open(sys.argv[1], 'w') as f:
+    f.write(content)
+" "$MKDOCS_DIR/mkdocs.yml"
 
 # Also ensure the logo path is correct
 if [ -f "$DOCS_DIR/assets/logo.png" ]; then
@@ -427,3 +445,5 @@ echo "  - javascripts/"
 echo "  - overrides/"
 echo "  - stylesheets/"
 echo "  - blog/"
+echo "  - comments/"
+echo "  - partials/"

scripts/systemd/install.sh

@@ -0,0 +1,35 @@
+#!/usr/bin/env bash
+# =============================================================================
+# Install Changemaker Lite systemd units
+# Substitutes __PROJECT_DIR__ and __USER__ placeholders with actual values.
+# Usage: sudo ./scripts/systemd/install.sh
+# =============================================================================
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PROJECT_DIR="$(dirname "$(dirname "$SCRIPT_DIR")")"
+INSTALL_USER="${SUDO_USER:-$(whoami)}"
+
+if [[ $EUID -ne 0 ]]; then
+  echo "ERROR: Must run as root (use sudo)." >&2
+  exit 1
+fi
+
+echo "Installing systemd units..."
+echo "  Project dir: ${PROJECT_DIR}"
+echo "  User:        ${INSTALL_USER}"
+
+for unit in "${SCRIPT_DIR}"/changemaker-upgrade.*; do
+  filename="$(basename "$unit")"
+  sed \
+    -e "s|__PROJECT_DIR__|${PROJECT_DIR}|g" \
+    -e "s|__USER__|${INSTALL_USER}|g" \
+    "$unit" > "/etc/systemd/system/${filename}"
+  echo "  Installed ${filename}"
+done
+
+systemctl daemon-reload
+systemctl enable --now changemaker-upgrade.path
+
+echo "Done. Status:"
+systemctl status changemaker-upgrade.path --no-pager