v0.2.4: Major Migration from Rust/Tauri to Electron

[zortos293]

v0.2.4

Summary

This draft release PR merges dev into main for v0.2.4.

This is a major migration release that:

• moves OpenNOW from the legacy Tauri/Rust stack to an Electron workspace
• modernizes streaming/input handling and session UX
• updates CI/CD packaging and runner strategy
• refreshes docs/branding to match current architecture

Scope

• 39 commits
• 88 files changed
• +23,335 / -33,334 lines

Major Changes

1. Electron workspace migration

• Added opennow-stable/ app with Electron + React + TypeScript architecture.
• Added main/preload/renderer split with secure IPC and shared types.
• Added Electron Vite config and Electron Builder packaging metadata.
• Added workspace root scripts delegating to opennow-stable.

Key files:

• opennow-stable/package.json
• opennow-stable/electron.vite.config.ts
• opennow-stable/src/main/index.ts
• opennow-stable/src/preload/index.ts
• opennow-stable/src/renderer/src/App.tsx

2. Streaming, input, and session UX improvements

• Implemented/updated GFN auth, CloudMatch, signaling, and subscription logic.
• Improved keyboard/gamepad input behavior and fullscreen ESC handling.
• Added session timer and WebRTC time-limit warnings.
• Improved loading UI, stats overlay, and stream-state interactions.

Key files:

• opennow-stable/src/main/gfn/auth.ts
• opennow-stable/src/main/gfn/cloudmatch.ts
• opennow-stable/src/main/gfn/signaling.ts
• opennow-stable/src/renderer/src/gfn/webrtcClient.ts
• opennow-stable/src/renderer/src/components/StreamView.tsx

3. CI/CD and packaging updates

• Consolidated Electron workflows into auto-build.
• Migrated supported runners to Blacksmith.
• Improved caching and lockfile behavior for build performance/stability.
• Added Linux ARM64 deb packaging fallback using system fpm.

Key file:

• .github/workflows/auto-build.yml

4. Docs and branding refresh

• Updated README feature matrix and migration messaging.
• Added/updated branding assets and support card/banner sections.
• Updated contributing guidance and repository metadata.

Key files:

• README.md
• .github/CONTRIBUTING.md
• logo.png

5. Legacy stack cleanup

• Removed legacy Tauri/Rust implementation and old root frontend files.
• Removed obsolete Flatpak manifests and related legacy build assets.

Removed paths include:

• src-tauri/**
• legacy src/** root frontend files
• flatpak/**

Breaking Changes

• Tauri runtime/build system removed.
• Desktop app entrypoint now under opennow-stable.
• Root-level old Vite/TS frontend files removed.
• Packaging/release flow now Electron Builder based.

Validation

• Passed: npm --prefix opennow-stable run typecheck
• Note: npm --prefix opennow-stable run build failed in sandbox with spawn EPERM (environment restriction), so CI/local unrestricted build should be used as source of truth.

Reviewer Checklist

• Validate no runtime dependency remains on removed Tauri files.
• Smoke test stream start/stop, fullscreen, ESC behavior, and shortcuts.
• Verify CI artifact generation for Windows/macOS/Linux (including ARM64 Linux deb).
• Confirm README and contribution docs reflect current architecture.
• Confirm tmp.js is intentional; remove if leftover debug file.