v0.3.8 · Live slide previews

The Codex canvas sidebar now shows Layers and Slides, with the conversation kept in Codex. Slide cards render the actual board content, preserve portrait/landscape proportions, and update after edits or page switches. Clicking a card navigates to its board.

The plugin pins a new complete editor runtime at 175844ede42a47268f753d331f0eeae32b010324. Standalone OpenPencil retains its Agent tab; the embedded host capability is transient.

Validation: 764 Web host tests, 67 shared sidebar tests, 66 plugin tests, full Rust format/Clippy, production WASM gates, native edit/save/reopen, and actual browser inspection in light/dark modes. All six published native runtimes passed their build and save/reopen smoke checks.