feat(cnode): add standalone CLI for Docker server management

- Reorganized server management code:
  - Moved server_cli.py -> deploy/docker/cnode_cli.py
  - Moved server_manager.py -> deploy/docker/server_manager.py

- Created fast Python-based installation (0.1s startup):
  - deploy/installer/cnode_pkg/ - Standalone package
  - deploy/installer/install-cnode.sh - Local installer
  - deploy/installer/deploy.sh - Remote installer for users

- Added backward compatibility:
  - crawl4ai/cli.py: 'crwl server' redirects to 'cnode'
  - Updated tests to match new CLI structure (12/12 passing)

- Automated sync workflow:
  - .githooks/pre-commit - Auto-syncs source to package
  - setup-hooks.sh - One-time setup for contributors
  - deploy/installer/sync-cnode.sh - Manual sync script

Performance:
  - Startup time: 0.1s (49x faster than PyInstaller)
  - Size: ~50KB wrapper vs 8.8MB binary

Commands:
  cnode start [--replicas N]  # Start server/cluster
  cnode status                # Check status
  cnode scale N               # Scale replicas
  cnode logs [-f]             # View logs
  cnode stop                  # Stop server

.githooks/pre-commit

@@ -0,0 +1,31 @@
+#!/bin/bash
+# Pre-commit hook: Auto-sync cnode files when cnode source is modified
+
+# Colors
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+NC='\033[0m'
+
+# Check if cnode source files are being committed
+CNODE_FILES_CHANGED=$(git diff --cached --name-only | grep -E "deploy/docker/(cnode_cli|server_manager)\.py")
+
+if [ -n "$CNODE_FILES_CHANGED" ]; then
+    echo -e "${YELLOW}🔄 cnode source files modified, auto-syncing to package...${NC}"
+
+    # Run sync script
+    if [ -f "deploy/installer/sync-cnode.sh" ]; then
+        bash deploy/installer/sync-cnode.sh
+
+        # Stage the synced files
+        git add deploy/installer/cnode_pkg/cli.py
+        git add deploy/installer/cnode_pkg/server_manager.py
+
+        echo -e "${GREEN}✅ cnode package synced and staged${NC}"
+    else
+        echo -e "${RED}❌ Error: sync-cnode.sh not found${NC}"
+        exit 1
+    fi
+fi
+
+exit 0