refactor(installer): Use npm --silent for quieter installs/builds

Author: rcourtman

scripts/install-pulse.sh

@@ -738,15 +738,15 @@ perform_update() {
     fi
 
     print_info "Installing NPM dependencies in $PULSE_DIR (root project directory)..."
-    if npm install --unsafe-perm > /dev/null; then # Redirect stdout
+    if npm install --unsafe-perm --silent; then # Use npm's silent flag
         print_success "NPM dependencies installed successfully in $PULSE_DIR."
     else
         print_error "Failed to install NPM dependencies in $PULSE_DIR. See npm output above."
         exit 1
     fi
 
     print_info "Building CSS assets in $PULSE_DIR..."
-    if npm run build:css > /dev/null; then # Redirect stdout
+    if npm run build:css --silent; then # Use npm's silent flag
         print_success "CSS assets built successfully."
     else
         print_error "Failed to build CSS assets. See npm output above."
@@ -1460,15 +1460,15 @@ case "$INSTALL_MODE" in
             # Install NPM dependencies (root and server, now consolidated) in PULSE_DIR
             print_info "Installing NPM dependencies in $PULSE_DIR..."
             cd "$PULSE_DIR" || { print_error "Failed to cd to $PULSE_DIR before npm install"; exit 1; }
-            if ! npm install --unsafe-perm > /dev/null; then # Redirect stdout
+            if ! npm install --unsafe-perm --silent; then # Use npm's silent flag
                 print_error "Failed to install NPM dependencies. See output above."
                 exit 1
             else
                 print_success "NPM dependencies installed."
             fi
 
             print_info "Building CSS assets in $PULSE_DIR..."
-            if ! npm run build:css > /dev/null; then # Redirect stdout
+            if ! npm run build:css --silent; then # Use npm's silent flag
                 print_error "Failed to build CSS assets. See output above."
                 exit 1 # This should be a fatal error for a fresh install
             else