Roadmap

Shipped

Window creation + OSR painting, transparency, frameless windows with draggable regions and synthetic resize edges, macOS custom title bars (titleBarStyle/trafficLightPosition), typed IPC, <bunium-webview>, Vite dev + bunium:// prod serving, native menu bar/tray/notifications/ dialogs, packaging (.app/.exe/.deb/.rpm/AppImage) with codesigning, delta-patch auto-update with crash-journal self-repair, CEF resource trimming, and per-platform npm packages — all implemented and passing automated tests on macOS, Linux, and Windows.

Near-term

• Publish to npm. The release pipeline (CI-built platform packages, staging scripts, install-consumer verification) is done; publishing itself is the last step. See Publishing.
• Windows platform package, real-hardware verification. The staging and install-consumer scripts follow the same pattern already verified on macOS/Linux, but haven't had their first real run against a live Windows CEF build outside CI.
• Real GPU-accelerated OSR on Windows. Unlike macOS (blocked upstream, see below), Windows is the one platform CEF's own headers say shared-texture OSR (OnAcceleratedPaint, D3D11) is actually supported on. Current Windows paint path is CPU-readback GDI (StretchDIBits, native/win/bunium_window_win.cc) — real, substantial, unstarted native work: a D3D11 device/swap chain, OnAcceleratedPaint wired in place of OnPaint, opening the per-frame shared texture handle. Scoped in PLAN.md's post-Phase-11 notes.
• -webkit-app-region: no-drag. Draggable regions currently swallow every click inside them — an override for interactive elements (buttons, inputs) nested in a drag region, matching Electron's convention.

Under consideration

• Wayland support on Linux (X11 only today).
• <bunium-webview> clip shapes — border-radius/clip-path on a clipping ancestor (rectangular clipping only today).
• Full CSS stacking-context semantics for <bunium-webview> z-ordering (currently a flat z-index comparison, not nested contexts).
• Sublayer alpha compositing — sublayers currently paint opaque only.
• Window vibrancy/dark-title-bar theming (macOS NSVisualEffectView, Windows DwmSetWindowAttribute dark-mode caption) — not implemented yet, beyond the existing OS color-scheme sync for page content.
• A cross-desktop global app menu on Linux — no OS-level convention exists yet the way macOS/Windows have one; Tray.setMenu() is the current recommended substitute there.
• Real GPU-accelerated OSR on macOS — blocked upstream, not a bunium gap. CEF's shared-texture OSR path (OnAcceleratedPaint) would skip the CPU-readback round-trip that currently makes GPU compositing measure slower than software (see Benchmarks), but CEF's own mac window-creation header says shared textures are "currently only supported on Windows (D3D11)" — confirmed against this repo's vendored CEF 151.3.16. Nothing to build until upstream CEF/Chromium ships mac support; re-check a future CEF version before attempting this again.

Contributing

This is an active solo project pre-1.0 — the public API can still move. Issues and PRs are welcome; see ARCHITECTURE.md before touching native code, several approaches were deliberately tried and rejected there.