`proto.settings` took any string as the device ("Pixel Nonexistent", "iphone 16") and saved it in
the file: the presenter then drew no device frame while its picker showed the name as if it were
one. An unknown colour was already refused with the device's colours, but a typo in the device
went unnoticed, and an agent couldn't read the settings back (`proto.settings {}` answered
`{ok: true}`, and neither `inspect_document` nor `get_node` shows a page's prototype settings).
An unknown name, or a value that isn't a string, is now refused with every name the picker offers
("None", "Custom size" and the devices), and nothing changes. A known name is taken in any case and
with spaces around it, and stored as the picker spells it (`known_device`). Every call answers the
page's settings as they are after it (`settings_json`): device, background, rotation, the colour
shown, the screen as presented (null without a device), the custom size and responsive, beside the
`ok: true` it answered before; `proto.settings {}` reads them.
Test: `proto_present_tests::unknown_devices_are_refused_and_settings_read_back`. Docs: mcp.md,
prototyping-parity.md, ROADMAP.md.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LvG6E2LxvJ6MuFmiLA6Zqm
- Device rotation: phones and tablets turn to landscape (`proto.settings {rotation}`), saved in
the file and imported from REST files (`CCW_90`); the presenter and the preview pane size the
screen to the turned device and draw its body turned. A rotate toggle sits beside the device
picker in the Prototype panel.
- Presentation options: fit, fit width, fill and 100% (`proto.presentOptions {scale?,
deviceFrame?}`, an Options menu in the presenter, Z cycles them, R restarts), the device frame
shown or hidden, kept between presentations; what overflows the window pans by wheel or drag.
Presenter textures are capped to the GPU's limit (big frames at 100% no longer overflow it).
- Scroll momentum: drags fling and slow down exactly per frame-rate-independent sub-steps, the
wheel coasts after it stops, a drag past the ends stretches and springs back; repaints only
while moving, a press catches a fling.
- Variable modes in the Design panel: frames pick a mode per multi-mode collection, or Auto
(inherited); `variable.setMode {mode: null}` sets Auto.
- Tests in new modules (engine proto_present_tests, UI present_view_tests); docs and ROADMAP.
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Filip StrajnarandClaude Opus 5.5
BFlatandClaude Opus 5.5