Commit pre-built frontend, remove Node.js from Pi deployment

The Pi Zero 2W (512MB RAM) can't survive npm ci + vite build.
Since static/dist/ is only ~3.6MB / 98 files, commit it to git
and eliminate Node.js entirely from the Pi setup and update flow.

- Un-ignore static/dist/ and track pre-built frontend assets
- Remove install_nodejs(), enable_swap()/disable_swap() from setup-pi.sh
- Remove frontend build steps from setup-pi.sh, dw update, dw checkout
- Add cleanup_unused() to purge Node.js and Docker from prior installs

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

.gitignore

@@ -30,7 +30,6 @@ node_modules/
 static/custom/*
 !static/custom/.gitkeep
 .claude/
-static/dist/
 .planning/
 .coverage
 # Frontend test artifacts

dw

@@ -28,26 +28,6 @@ YELLOW='\033[1;33m'
 BLUE='\033[0;34m'
 NC='\033[0m'
 
-# Temporary swap for memory-constrained boards (e.g. Pi Zero 2W)
-SWAP_FILE="/tmp/dw-build-swap"
-enable_swap() {
-    local total_mb
-    total_mb=$(awk '/MemTotal/ {printf "%d", $2/1024}' /proc/meminfo)
-    if [[ "$total_mb" -lt 1024 ]]; then
-        echo "Low memory detected (${total_mb}MB). Enabling temporary swap..."
-        sudo dd if=/dev/zero of="$SWAP_FILE" bs=1M count=1024 status=none 2>/dev/null || true
-        sudo chmod 600 "$SWAP_FILE"
-        sudo mkswap "$SWAP_FILE" > /dev/null 2>&1 || true
-        sudo swapon "$SWAP_FILE" 2>/dev/null || true
-    fi
-}
-disable_swap() {
-    if [[ -f "$SWAP_FILE" ]]; then
-        sudo swapoff "$SWAP_FILE" 2>/dev/null || true
-        sudo rm -f "$SWAP_FILE"
-    fi
-}
-
 # Find dune-weaver directory
 find_install_dir() {
     # Check common locations
@@ -138,20 +118,10 @@ cmd_update() {
         exec /usr/local/bin/dw update --continue
     fi
 
-    enable_swap
-
     echo "Updating Python dependencies..."
     source .venv/bin/activate
     pip install -r requirements.txt
 
-    echo "Rebuilding frontend..."
-    cd "$INSTALL_DIR/frontend"
-    npm ci --loglevel=error
-    npx vite build
-    cd "$INSTALL_DIR"
-
-    disable_swap
-
     # Update nginx config
     echo "Updating nginx config..."
     sudo cp "$INSTALL_DIR/nginx/dune-weaver.conf" /etc/nginx/sites-available/dune-weaver.conf
@@ -333,22 +303,11 @@ cmd_checkout() {
 
     echo -e "Switched to branch: ${GREEN}${branch}${NC}"
 
-    enable_swap
-
-    # Rebuild frontend
-    echo "Rebuilding frontend..."
-    cd "$INSTALL_DIR/frontend"
-    npm ci --loglevel=error
-    npx vite build
-    cd "$INSTALL_DIR"
-
     # Update Python dependencies
     echo "Updating Python dependencies..."
     source .venv/bin/activate
     pip install -r requirements.txt
 
-    disable_swap
-
     # Update dw CLI from the new branch
     sudo cp "$INSTALL_DIR/dw" /usr/local/bin/dw
     sudo chmod +x /usr/local/bin/dw

setup-pi.sh

@@ -82,28 +82,6 @@ print_success() {
     echo -e "${GREEN}$1${NC}"
 }
 
-# Temporary swap for memory-constrained boards (e.g. Pi Zero 2W with 512MB)
-SWAP_FILE="/tmp/dw-build-swap"
-
-enable_swap() {
-    local total_mb
-    total_mb=$(awk '/MemTotal/ {printf "%d", $2/1024}' /proc/meminfo)
-    if [[ "$total_mb" -lt 1024 ]]; then
-        echo "Low memory detected (${total_mb}MB). Enabling temporary swap..."
-        sudo dd if=/dev/zero of="$SWAP_FILE" bs=1M count=1024 status=none 2>/dev/null || true
-        sudo chmod 600 "$SWAP_FILE"
-        sudo mkswap "$SWAP_FILE" > /dev/null 2>&1 || true
-        sudo swapon "$SWAP_FILE" 2>/dev/null || true
-    fi
-}
-
-disable_swap() {
-    if [[ -f "$SWAP_FILE" ]]; then
-        sudo swapoff "$SWAP_FILE" 2>/dev/null || true
-        sudo rm -f "$SWAP_FILE"
-    fi
-}
-
 # Install system dependencies
 install_system_deps() {
     print_step "Installing system dependencies..."
@@ -159,29 +137,6 @@ install_lgpio() {
     fi
 }
 
-# Install Node.js 20 via nodesource
-install_nodejs() {
-    print_step "Installing Node.js..."
-
-    if command -v node &> /dev/null; then
-        local node_version
-        node_version=$(node --version)
-        echo "Node.js already installed: $node_version"
-        # Check if version is 20+
-        local major
-        major=$(echo "$node_version" | sed 's/v//' | cut -d. -f1)
-        if [[ "$major" -ge 20 ]]; then
-            print_success "Node.js version is sufficient"
-            return
-        fi
-        echo "Upgrading to Node.js 20..."
-    fi
-
-    curl -fsSL https://deb.nodesource.com/setup_20.x | sudo -E bash -
-    sudo DEBIAN_FRONTEND=noninteractive apt install -y nodejs
-    print_success "Node.js $(node --version) installed"
-}
-
 # Check if running on Raspberry Pi
 check_raspberry_pi() {
     print_step "Checking system compatibility..."
@@ -304,15 +259,6 @@ deploy_native() {
     pip install --upgrade pip
     pip install -r requirements.txt
 
-    # Build frontend (swap helps Pi Zero 2W survive npm ci)
-    enable_swap
-    print_step "Building frontend..."
-    cd "$INSTALL_DIR/frontend"
-    npm ci --loglevel=error
-    npx vite build
-    cd "$INSTALL_DIR"
-    disable_swap
-
     # Ensure nginx (www-data) can traverse to static files
     # chmod o+x grants traversal only, not directory listing
     local dir="$INSTALL_DIR"
@@ -466,6 +412,32 @@ configure_uart() {
     fi
 }
 
+# Remove software that is no longer needed on the Pi
+cleanup_unused() {
+    print_step "Cleaning up unused software..."
+
+    # Remove Node.js / npm if present from a prior install
+    if dpkg -l nodejs 2>/dev/null | grep -q '^ii'; then
+        echo "Removing Node.js (no longer needed — frontend is pre-built)..."
+        sudo apt purge -y nodejs || true
+        sudo rm -f /etc/apt/sources.list.d/nodesource.list \
+                    /etc/apt/keyrings/nodesource.gpg 2>/dev/null || true
+        sudo apt autoremove -y
+        print_success "Node.js removed"
+    fi
+
+    # Remove Docker if present from old Docker-based deployment
+    if dpkg -l docker-ce 2>/dev/null | grep -q '^ii'; then
+        echo "Removing Docker (old deployment method)..."
+        # Stop running containers
+        sudo docker stop $(sudo docker ps -aq) 2>/dev/null || true
+        sudo apt purge -y docker-ce docker-ce-cli containerd.io docker-compose-plugin 2>/dev/null || true
+        sudo rm -rf /var/lib/docker
+        sudo apt autoremove -y
+        print_success "Docker removed"
+    fi
+}
+
 # Get IP address
 get_ip_address() {
     # Try multiple methods to get IP
@@ -541,7 +513,6 @@ main() {
     # Run setup steps
     check_raspberry_pi
     install_system_deps
-    install_nodejs
     ensure_repo
     update_system
     disable_wlan_powersave
@@ -557,6 +528,7 @@ main() {
     install_lgpio
     deploy_native
     install_cli
+    cleanup_unused
     print_final_instructions
 }
 

static/dist/index.html

@@ -0,0 +1,67 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0, viewport-fit=cover" />
+    <meta name="description" content="Control your kinetic sand table" />
+
+    <!-- PWA Meta Tags -->
+    <meta name="theme-color" content="#0a0a0a" />
+    <meta name="apple-mobile-web-app-capable" content="yes" />
+    <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent" />
+    <meta name="apple-mobile-web-app-title" content="Dune Weaver" />
+    <meta name="mobile-web-app-capable" content="yes" />
+
+    <!-- Favicons - will be updated dynamically if custom logo exists -->
+    <link rel="icon" type="image/x-icon" href="/static/favicon.ico" id="favicon-ico" />
+    <link rel="icon" type="image/png" sizes="128x128" href="/static/favicon-128x128.png" id="favicon-128" />
+    <link rel="icon" type="image/png" sizes="96x96" href="/static/favicon-96x96.png" id="favicon-96" />
+    <link rel="icon" type="image/png" sizes="32x32" href="/static/favicon-32x32.png" id="favicon-32" />
+    <link rel="icon" type="image/png" sizes="16x16" href="/static/favicon-16x16.png" id="favicon-16" />
+    <link rel="apple-touch-icon" sizes="180x180" href="/static/apple-touch-icon.png" id="apple-touch-icon" />
+    <link rel="manifest" href="/api/manifest.webmanifest" id="manifest" />
+
+    <title>Dune Weaver</title>
+
+    <!-- Check for custom favicon -->
+    <script>
+      // Get base URL for active table (supports multi-table connections)
+      (function() {
+        var baseUrl = '';
+        try {
+          var stored = localStorage.getItem('duneweaver_tables');
+          var activeId = localStorage.getItem('duneweaver_active_table');
+          if (stored && activeId) {
+            var data = JSON.parse(stored);
+            var active = (data.tables || []).find(function(t) { return t.id === activeId; });
+            if (active && !active.isCurrent && active.url && active.url !== window.location.origin) {
+              baseUrl = active.url.replace(/\/$/, '');
+            }
+          }
+        } catch (e) {}
+
+        fetch(baseUrl + '/api/settings')
+          .then(function(r) { return r.json(); })
+          .then(function(settings) {
+            if (settings.app && settings.app.custom_logo) {
+              // Use generated icons with proper padding (not the raw uploaded logo)
+              document.getElementById('favicon-ico').href = baseUrl + '/static/custom/favicon.ico';
+              document.getElementById('apple-touch-icon').href = baseUrl + '/static/custom/apple-touch-icon.png';
+            }
+            if (settings.app && settings.app.name) {
+              document.title = settings.app.name;
+              // Also update PWA title
+              var appTitleMeta = document.querySelector('meta[name="apple-mobile-web-app-title"]');
+              if (appTitleMeta) appTitleMeta.content = settings.app.name;
+            }
+          })
+          .catch(function() {});
+      })();
+    </script>
+    <script type="module" crossorigin src="/assets/index-pZ3J7MoU.js"></script>
+    <link rel="stylesheet" crossorigin href="/assets/index-B78VxGpo.css">
+  <script id="vite-plugin-pwa:register-sw" src="/registerSW.js"></script></head>
+  <body>
+    <div id="root"></div>
+  </body>
+</html>

static/dist/registerSW.js

@@ -0,0 +1 @@
+if('serviceWorker' in navigator) {window.addEventListener('load', () => {navigator.serviceWorker.register('/sw.js', { scope: '/' })})}