Add comprehensive Docker test environment for installation validation

Add complete Docker testing infrastructure to validate all 3 installation methods

Features:
- Dockerfile: Ubuntu 22.04 with Node.js 20, Python 3, prerequisites
- docker-compose.yml: Orchestrate 3 test containers + verification
- Test suite with 5 scripts:
  * common.sh: Shared utilities and verification functions
  * test-interactive-install.sh: Test Option 2 (interactive installer)
  * test-master-prompt-install.sh: Test Option 1 (master prompt)
  * test-manual-install.sh: Test Option 3 (manual installation)
  * verify-all-installations.sh: Master verification with report generation
- run-tests.sh: Quick start script for easy test execution

What Gets Tested:
✓ Prerequisites (Node.js, npm, Python, Git, jq)
✓ Claude Code installation and version
✓ Settings files (settings.json, settings.local.json)
✓ 38 agents across 8 departments
✓ MCP tools (@z_ai/mcp-server, @z_ai/coding-helper, llm-tldr)
✓ UI/UX Pro Max skill
✓ Ralph CLI (optional, can be enabled)

Test Results:
- Saved to docker/test-env/test-results/
- Detailed logs for each test method
- Component verification counts
- Comprehensive final report with pass/fail status

Usage:
cd docker/test-env
./run-tests.sh

Or manually:
docker-compose up verify-all

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

docker/test-env/run-tests.sh

@@ -0,0 +1,93 @@
+#!/bin/bash
+# Quick start script for running Docker tests
+# This script builds and runs all installation tests
+
+set -e
+
+# Colors
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+BLUE='\033[0;34m'
+CYAN='\033[0;36m'
+BOLD='\033[1m'
+NC='\033[0m'
+
+echo -e "${CYAN}╔════════════════════════════════════════════════════════════════╗${NC}"
+echo -e "${CYAN}║   Claude Code Suite - Docker Test Environment                    ║${NC}"
+echo -e "${CYAN}╚════════════════════════════════════════════════════════════════╝${NC}"
+echo ""
+
+# Check if Docker is installed
+if ! command -v docker &> /dev/null; then
+    echo -e "${RED}Error: Docker is not installed${NC}"
+    echo "Please install Docker first: https://docs.docker.com/get-docker/"
+    exit 1
+fi
+
+# Check if docker-compose is installed
+if ! command -v docker-compose &> /dev/null; then
+    echo -e "${YELLOW}Warning: docker-compose not found, trying docker compose...${NC}"
+    DOCKER_COMPOSE="docker compose"
+else
+    DOCKER_COMPOSE="docker-compose"
+fi
+
+# Change to test directory
+cd "$(dirname "$0")"
+
+echo -e "${BOLD}📦 This will:${NC}"
+echo "  1. Build Docker test environment"
+echo "  2. Run all 3 installation tests"
+echo "  3. Generate comprehensive test report"
+echo ""
+
+# Ask for confirmation
+read -p "Continue? (y/N): " confirm
+if [[ ! "$confirm" =~ ^[Yy]$ ]]; then
+    echo "Aborted."
+    exit 0
+fi
+
+echo ""
+echo -e "${BLUE}Building Docker test environment...${NC}"
+
+# Build the Docker image
+if $DOCKER_COMPOSE build; then
+    echo -e "${GREEN}✓ Build successful${NC}"
+else
+    echo -e "${RED}✗ Build failed${NC}"
+    exit 1
+fi
+
+echo ""
+echo -e "${BLUE}Running installation tests...${NC}"
+echo "This may take 10-15 minutes..."
+echo ""
+
+# Run the tests
+if $DOCKER_COMPOSE run --rm verify-all; then
+    echo ""
+    echo -e "${GREEN}╔════════════════════════════════════════════════════════════════╗${NC}"
+    echo -e "${GREEN}║                   ✅ ALL TESTS PASSED ✅                          ║${NC}"
+    echo -e "${GREEN}╚════════════════════════════════════════════════════════════════╝${NC}"
+    echo ""
+    echo -e "${BOLD}📊 Test Report:${NC}"
+    echo "   Location: $(pwd)/test-results/"
+    echo ""
+    ls -lh test-results/final-report-*.txt 2>/dev/null || echo "   (Run tests first to generate report)"
+    echo ""
+else
+    echo ""
+    echo -e "${RED}╔════════════════════════════════════════════════════════════════╗${NC}"
+    echo -e "${RED}║                   ❌ SOME TESTS FAILED ❌                        ║${NC}"
+    echo -e "${RED}╚════════════════════════════════════════════════════════════════╝${NC}"
+    echo ""
+    echo -e "${BOLD}📊 Check logs:${NC}"
+    echo "   Location: $(pwd)/test-results/"
+    echo ""
+    echo "   View detailed logs:"
+    echo "   cat test-results/test-*.log"
+    echo ""
+    exit 1
+fi