feat: add playwright mcp integration tests and workflow

[Copilot]

Adds a GitHub Actions workflow and integration tests for the Playwright MCP server running through the AWF firewall.

Changes

• New workflow (.github/workflows/test-playwright.yml): Runs Playwright MCP integration tests on push/PR to main
• Integration tests (tests/integration/playwright-mcp.test.ts): Validates MCP config writing, image pull through firewall, container startup, and github.com accessibility

MCP Configuration

{
  "mcpServers": {
    "playwright": {
      "type": "local",
      "command": "docker",
      "args": ["run", "-i", "--rm", "--init", "mcr.microsoft.com/playwright/mcp", 
               "--output-dir", "/tmp/gh-aw/mcp-logs/playwright",
               "--allowed-hosts", "localhost;localhost:*;127.0.0.1;127.0.0.1:*;github.com"],
      "tools": ["*"]
    }
  }
}

Test Coverage

1. MCP configuration can be written and validated
2. Docker can pull Playwright MCP image through firewall
3. Playwright MCP container starts and responds
4. github.com accessible through firewall
5. MCP config format validation

Original prompt

create a copilot workflow that starts playwright

"playwright": {
"type": "local",
"command": "docker",
"args": ["run", "-i", "--rm", "--init", "mcr.microsoft.com/playwright/mcp", "--output-dir", "/tmp/gh-aw/mcp-logs/playwright", "--allowed-hosts", "localhost;localhost:;127.0.0.1;127.0.0.1:;github.com"],
"tools": ["*"]
}

the prompt could be as simple as "Use playwright to navigate to https://github.com and verify the page title contains "GitHub""

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[github-actions]

Test Coverage Report

Metric	Coverage	Covered/Total
Lines	49.19%	274/557
Statements	48.94%	279/570
Functions	54.83%	34/62
Branches	40.57%	71/175

Coverage Thresholds

The project has the following coverage thresholds configured:

• Lines: 38%
• Statements: 38%
• Functions: 35%
• Branches: 30%

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Coverage report generated by `npm run test:coverage`