Enforce maintained regression checks

[parsakhaz]

Summary

• add PR CI coverage for root typecheck/lint, minimal Playwright smoke, and cross-OS main-process tests
• replace stale browser smoke assumptions with a deterministic renderer preload mock
• remove obsolete Playwright specs that no longer matched the current UI/test contract

Validation

• ruby YAML parse for .github/workflows/quality.yml
• pnpm typecheck
• pnpm lint (passes with existing warnings)
• CI=1 pnpm --filter main test
• PANE_DIR=/tmp/pane-pr-ci-* xvfb-run -a pnpm test:ci
• PANE_DIR=/tmp/pane-min-ci-* xvfb-run -a pnpm test:ci:minimal

Notes

• Local shell reports Node 20.19.3, while repo requires >=22.14.0. CI uses Node 22.15.1.
• The current Playwright suite is intentionally reduced to maintained smoke coverage. Broader real Electron IPC E2E should be rebuilt as a follow-up using a proper Electron harness.

[parsakhaz]

@codex review

[parsakhaz]

@claude review

[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. What shall we delve into next?

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

Codex can also answer questions or update the PR. Try commenting "@codex address that feedback".

[parsakhaz]

@codex review

[parsakhaz]

@claude review

[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. Hooray!

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

Codex can also answer questions or update the PR. Try commenting "@codex address that feedback".