trace-to-skill v0.1.64

Adds Codex MCP discovery/config-scope mismatch detection for reports where MCP works in CLI or one config scope but disappears in VS Code, Desktop, WSL, project-local config, or an older session.\n\nHighlights:\n- New finding kind: codex_mcp_discovery_mismatch\n- New public fixture and benchmark case, bringing the deterministic fixture benchmark to 31 cases\n- New demo: npx trace-to-skill@0.1.64 demo mcp-discovery-mismatch\n- Updated README, issue map, failure taxonomy, discovery metadata, and OpenAI OSS evidence docs\n\nVerified locally with npm run check, git diff --check, and npm pack --dry-run.