Resolve remaining automated issue follow-ups

[baixiangcpp]

Summary

• Stabilize the input-intent audit and reject ambiguous Playwright-only CLI modes.
• Fix Command Palette, JSON Tree, and Pipeline privacy dialog focus workflows, including trap and disconnected-opener recovery.
• Harden PWA install/update ownership, pre-hydration prompt capture, stale install state, fail-fast CI timeouts, and localized install guidance.
• Complete the mobile workflow matrix, Pipeline section navigation, viewport-pressure coverage, and Android browser guidance.

Review fixes included

• Share one one-shot beforeinstallprompt across layout and Install App surfaces.
• Preserve the once-per-session prompt gate while clearing stale installed state.
• Persist appinstalled before deferred React UI mounts.
• Capture install events in the existing same-origin parser-blocking runtime bootstrap.
• Restore JSON rename focus when the original keyed node is replaced.
• Fail unknown or conflicting --*-only flags before starting Playwright.
• Bound navigator.serviceWorker.ready and the dedicated PWA CI job.
• Direct Firefox/Edge Android users to Chrome-specific installation steps.

Validation

• Node 20.20.2, npm 10.9.8
• Production high/critical audit passed; the known moderate Next/PostCSS advisory remains tracked in Track upstream fix for Next bundled PostCSS advisory #7.
• ESLint passed with no warnings.
• Vitest: 319 files, 1,723 passed, 3 skipped.
• Coverage: 83.06% statements, 72.55% branches, 89.89% functions, 86.5% lines.
• npm run validate, build:app, and build:post passed.
• Full Playwright smoke, 14-route-width screenshots, and independent PWA smoke passed.
• Lighthouse 13.4.0 accessibility reports scored 100 on Home, All Tools, JSON Formatter, Pipeline Builder, Trust Center, and Install App.

Remaining manual boundaries

• [Audit 23/32][P2][PWA] Improve Install App, offline-state, and cache-clearing UX #260 still requires real Chrome/Edge install UI plus Android Chrome and iOS Safari device validation.
• [Audit 25/32][P2][Mobile] Improve mobile layouts for catalog, tools, Pipeline Builder, and PWA install #262 still requires physical Android/iOS software-keyboard, browser chrome, and rotation validation.
• [Audit 26/32][P2][Accessibility] Run full a11y audit and fix ARIA, focus, keyboard, contrast, and live feedback gaps #263 still requires NVDA/VoiceOver/TalkBack verification in real browser/AT combinations.

Closes #325
Refs #260
Refs #262
Refs #263

[baixiangcpp]

@codex review

[cloudflare-workers-and-pages]

Deploying byteflow with    Cloudflare Pages

Latest commit:	8fdf891
Status:	✅  Deploy successful!
Preview URL:	https://30d75fd5.byteflow-c58.pages.dev
Branch Preview URL:	https://fix-remaining-open-issues-20.byteflow-c58.pages.dev

View logs

[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. More of your lovely PRs please.

Reviewed commit: 8fdf891d7e

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