chore(release): prepare v0.1.0-beta.1

[fishandsheep]

Summary

• Prepare v0.1.0-beta.1 as a browser-local public Beta.
• Add release documentation, security guidance, contribution guidance, and GitHub Issue templates.
• Add sanitized parser fixtures, golden expectations, and route-simulation coverage.
• Gate CI and GitHub Pages deployment on unit tests, build, dependency audit, and Chromium/Firefox/WebKit E2E checks.
• Upgrade Vite and Vitest and fix PNG export coverage to assert visible edge colors semantically.

Validation

• npm test — 6 files, 54 tests passed.
• npm run build — passed.
• npm audit --audit-level=high — 0 vulnerabilities.
• Chromium E2E — 4/4 passed.
• Firefox E2E — 4/4 passed.
• WebKit runs in CI with Playwright system dependencies installed by the workflow.

Release scope

This is a Beta release for explainable static inference over the documented Nginx subset. It does not claim to emulate complete Nginx runtime behavior, and it does not upload or persist configuration text.

[xhawk-ai]

📋 Review Summary

I reviewed the v0.1.0-beta.1 release prep, including the new release/security/contribution docs, reusable quality workflow, dependency upgrades, sanitized parser fixtures, and browser coverage additions. I did not find any correctness, security, performance, or maintainability issues that warrant an inline finding; unit tests, build, and dependency audit pass in this checkout.