feat: add --source option to install script for building from source

- Added --source, --from-source, and --branch options (all equivalent)
- Allows building and installing Pulse from source code
- Optional branch parameter (defaults to main)
- Builds frontend and backend locally before installing
- Removes separate install-from-main.sh script - integrated into main script

Usage:
  curl -fsSL https://raw.githubusercontent.com/rcourtman/Pulse/main/install.sh | bash -s -- --source
  curl -fsSL https://raw.githubusercontent.com/rcourtman/Pulse/main/install.sh | bash -s -- --source develop

scripts/install-from-main.sh

@@ -1,105 +0,0 @@
-#!/usr/bin/env bash
-
-# Script to build and install Pulse from main branch
-# This allows testing latest changes without creating a release
-
-set -euo pipefail
-
-# Colors
-RED='\033[0;31m'
-GREEN='\033[0;32m'
-YELLOW='\033[1;33m'
-BLUE='\033[0;34m'
-NC='\033[0m' # No Color
-
-print_info() { echo -e "${BLUE}[INFO]${NC} $1"; }
-print_success() { echo -e "${GREEN}[SUCCESS]${NC} $1"; }
-print_error() { echo -e "${RED}[ERROR]${NC} $1" >&2; }
-print_warning() { echo -e "${YELLOW}[WARNING]${NC} $1"; }
-
-# Check if running as root
-if [[ $EUID -ne 0 ]]; then
-   print_error "This script must be run as root"
-   exit 1
-fi
-
-print_info "Building Pulse from main branch..."
-
-# Install dependencies
-print_info "Installing build dependencies..."
-apt-get update >/dev/null 2>&1
-apt-get install -y git golang-go make nodejs npm >/dev/null 2>&1 || {
-    print_error "Failed to install dependencies"
-    exit 1
-}
-
-# Create temp directory
-TEMP_DIR=$(mktemp -d)
-cd "$TEMP_DIR"
-
-print_info "Cloning repository..."
-git clone --depth 1 https://github.com/rcourtman/Pulse.git >/dev/null 2>&1 || {
-    print_error "Failed to clone repository"
-    exit 1
-}
-
-cd Pulse
-
-print_info "Building frontend..."
-cd frontend-modern
-npm ci >/dev/null 2>&1 || {
-    print_error "Failed to install frontend dependencies"
-    exit 1
-}
-npm run build >/dev/null 2>&1 || {
-    print_error "Failed to build frontend"
-    exit 1
-}
-cd ..
-
-print_info "Building backend..."
-make build >/dev/null 2>&1 || {
-    print_error "Failed to build backend"
-    exit 1
-}
-
-# Detect service name
-SERVICE_NAME="pulse"
-if systemctl list-unit-files --no-legend | grep -q "^pulse-backend.service"; then
-    SERVICE_NAME="pulse-backend"
-fi
-
-# Stop service if running
-if systemctl is-active --quiet "$SERVICE_NAME"; then
-    print_info "Stopping $SERVICE_NAME service..."
-    systemctl stop "$SERVICE_NAME"
-fi
-
-# Backup existing binary
-if [[ -f /opt/pulse/bin/pulse ]]; then
-    print_info "Backing up existing binary..."
-    cp /opt/pulse/bin/pulse /opt/pulse/bin/pulse.backup
-fi
-
-# Install new binary
-print_info "Installing new binary..."
-mkdir -p /opt/pulse/bin
-cp bin/pulse /opt/pulse/bin/pulse
-chmod +x /opt/pulse/bin/pulse
-
-# Update VERSION file to show it's from main
-echo "main-$(git rev-parse --short HEAD)" > /opt/pulse/VERSION
-
-# Start service
-print_info "Starting $SERVICE_NAME service..."
-systemctl start "$SERVICE_NAME" || {
-    print_warning "Failed to start service automatically. You may need to start it manually."
-}
-
-# Cleanup
-cd /
-rm -rf "$TEMP_DIR"
-
-print_success "Successfully installed Pulse from main branch!"
-print_info "Version: main-$(cd /opt/pulse && git rev-parse --short HEAD 2>/dev/null || echo 'unknown')"
-print_info "Access Pulse at: http://$(hostname -I | awk '{print $1}'):7655"