Add MCP Gateway Log Analyzer workflow with test case reproduction

[Copilot]

Compiles .github/workflows/mcp-gateway-log-analyzer.md into a GitHub Action that analyzes MCP Gateway logs from gh-aw repository workflows and creates issues for detected errors with reproducible test cases.

Changes

• Workflow Configuration: Fixed permissions for strict mode (removed issues: write, added issues: read and pull-requests: read)
• Test Case Generation (Step 5): Added instructions for the AI agent to create:
  • Go test case templates with testify assertions
  • Bash reproduction scripts for command-line reproducible errors
  • Integration test scenarios for multi-component failures
  • Test case summary tables categorized by priority
• Issue Template Enhancement: Extended issue body to include test cases section with code snippets, reproduction steps, and suggested test file locations
• Compiled Artifact: Generated .github/workflows/mcp-gateway-log-analyzer.lock.yml (1522 lines) via gh aw compile

Workflow Behavior

The workflow runs daily (or on-demand) and:

1. Fetches workflow runs from githubnext/gh-aw for the last 24 hours
2. Downloads and analyzes MCP Gateway logs from artifacts
3. Categorizes errors (Critical/High/Medium/Low priority)
4. Creates test cases for Critical and High priority reproducible errors
5. Opens a single GitHub issue with findings and test cases (max 1 per run)
6. Silently succeeds if no errors found

Example Test Case Output

// TestCase: Gateway Startup Failure
// Category: Critical
// Related Error: "failed to start container: image not found"

func TestGatewayContainerImageNotFound(t *testing.T) {
    // Arrange
    config := &Config{
        Servers: map[string]ServerConfig{
            "test": {Container: "invalid/image:tag"},
        },
    }
    
    // Act
    _, err := StartGateway(config)
    
    // Assert
    require.Error(t, err)
    assert.Contains(t, err.Error(), "image not found")
}

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