Agentic Workflow Guard v1.0.0

Agentic Workflow Guard now focuses on Agentic Workflow Injection mapping for AI-agent GitHub Actions workflows.\n\nHighlights:\n- Added Mermaid attack graph output with --format graph.\n- Added standalone HTML reports with --format html --output awguard-report.html.\n- Added --fix-dry-run remediation guidance.\n- Added built-in presets: strict, claude-code, codex, aider, and triage-bot.\n- Polished README positioning with an AWI attack graph hook.\n\nTry it:\n\nnode ./bin/awguard.js examples/unsafe-agent.yml --format graph\nnode ./bin/awguard.js examples/unsafe-agent.yml --format html --output awguard-report.html\nnode ./bin/awguard.js examples/unsafe-agent.yml --fix-dry-run