feat: desktop PWA support and build fixes (v0.12.3)

[dmux]

Description

This PR introduces full Desktop Progressive Web App (PWA) support and addresses recent build errors caused by missing icons in the react-icons/si module. It also bumps the project version to 0.12.3.

Changes Included

• PWA Implementation: Integrated @ducanh2912/next-pwa to manage the service worker, offering aggressive caching and offline support.
• Manifest Enhancements: Updated manifest.ts to include display_override: ['window-controls-overlay', 'standalone'] for a native desktop feel, fallback PNG icons, and desktop screenshots for rich install UI.
• Build Fixes: Removed deprecated/missing icons (SiHeroku, SiSendgrid, SiSlack, SiTwilio) from react-icons/si imports and correctly mapped them to default fallback icons (e.g., Layers, Box).
• Version Bump: Updated package.json, README.md, and CHANGELOG.md to reflect version 0.12.3.

Required Manual Steps for Reviewers

1. Provide a 1280x720 (or 1920x1080) screenshot in public/screenshots/desktop.png.
2. Generate 192x192 and 512x512 PNG equivalents of icon.svg inside public/.
3. Verify PWA installability in a Chromium-based browser via DevTools (Application > Manifest).

[vercel]

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Project	Deployment	Actions	Updated (UTC)
openarchflow-app	Ready	Preview, Comment	Jul 12, 2026 10:01pm