[codex] Fix ProbeQA open issues

[rushillshah]

Summary

• add configurable console and network ignore rules while preserving strict defaults
• add optional Playwright runner selection without adding Playwright as a required dependency
• add vendor-neutral AI refinement adapters for OpenAI, Anthropic, and local providers with safe fallback behavior
• guard null/missing responses before validation reads response status fields
• add a README demo GIF and launch-kit reference

Closes #1
Closes #2
Closes #3
Closes #4
Closes #6

Validation

• npm test
• npm run pack:check

[rushillshah]

Superseded by one-issue PRs: #8, #9, #10, #11, and #12.