Slots: a frame of a main component becomes a slot property
(component.makeSlot / removeSlot, preferred components, type "slot" in
component.properties). Instances show the main's default content until
the slot is edited; from then on its layers are the instance's own
(override group "slot"): free to add, remove and reorder, kept across
main updates, variant switches, copy/paste and detach, and instances
placed there stand alone. instance.slotInsert fills a slot,
instance.resetSlot brings the default content back. Structure
protection allows edits inside slots only; drops from the Assets panel,
canvas drags, drawing and paste land in slots. UI: slot icon in the
layers panel, dashed outlines and labels on the canvas, slot property
rows with a fill menu in the properties panel, Make/Remove slot on
frames inside a main.
Nested overrides: overrides inside a nested instance survive the main
moving it into another frame (layers matched by source alone when
unique); a nested instance copied out of an instance is re-linked to
its own main with its look kept (values set by component properties
aren't overrides); plain layers copied out of instances stop mirroring
them; canvas drags can no longer pull layers out of an instance or
reorder its auto layout children. Tests for swaps, variant switches,
main restructuring, detach and copy/paste.
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
- A nested instance inside a main component can be exposed (`component.exposeInstance`, an
"Expose properties to instances" toggle in its panel); the main's instances then list it by
name with its variant and component property controls, recursively for exposed instances
inside it. Values set there are nested overrides and survive main edits.
- `instance.exposed {id}` lists an instance's exposed nested copies (for the CLI and MCP).
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
- Assets tab rebuilt as its own module: local components as two-column tiles with live
thumbnails (re-rendered when a component's content changes, throttled), a search field that
filters components and styles, and the local styles list.
- Drag a tile onto the canvas: a ghost follows the pointer, the frame under it highlights and auto
layout frames show the insertion line; releasing drops an instance there, centred on the
pointer. Clicking a tile places one in the middle of the view.
- New command `instance.place {component, x, y}` (page point; drops into the frame or auto layout
slot under it; never inside its own main) for the CLI, control channel and MCP.
- The auto layout drop slot is shared with moving layers (`drop::auto_layout_slot`).
- Creating a component from a single shape names it after the shape.
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Without craft-fonts (CI) the overridden text keeps its size, so the old guard (`width > 0`)
asserted a hug that could never happen and failed main's CI.
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
