1.2.5

Added

• <iframe> — real web pages in game. Rendered by the system WebView (WebView2 / Edge Runtime on Windows) in a hidden offscreen window and streamed back into a texture, so layout, clipping, transforms and hit testing treat it like any other texture-backed element. Absolute src only; pointer and keyboard input is forwarded. Windows x64 + WebView2 Runtime only.
• <iframe> capture (auto / lossless / fast / stream) and capture-scale controls, plus Iframe.status() diagnostics and a frame-timing HUD stream line.
• CSS scrollbar styling: scrollbar-width, scrollbar-color, and the ::-webkit-scrollbar / -track / -thumb / -thumb:hover / -corner pseudo-elements.

Performance

• <iframe> frames now travel as an incremental image stream (32x32 tile diff over shared memory); only changed regions are re-uploaded, and a static page publishes nothing.
• Up to four captures in flight; the capture rate follows the element's draw rate; decoding moved off the input thread (cmd= now 0-1 ms); pointer moves coalesced; raster capped at 1.2M pixels.
• Faster item rendering, transform-only style changes no longer force a full relayout, and text measurement no longer allocates per lookup (7.45 -> 0.14 MB/frame).

Fixed

• Links opened in a new window now navigate in the same iframe instead of spawning a desktop popup, and closing a page shuts down its web view.
• clip-path polygon fill rules, concave polygons, and circle()/ellipse() default radii.
• WorldWindow visibility hysteresis band no longer renders at full cost.
• DevTools no longer answers to a hardcoded Ctrl+Shift+I; it is now only the rebindable "Toggle DevTools" keybind.