M1: sections and frames: resize to fit, section colours, ready-for-dev status (#23)

- Object ▸ Resize to fit (Alt+Shift+Cmd+R, `object.resizeToFit`): frames, sections and
  components shrink or grow to their visible contents without moving them on the page; auto
  layout frames switch to hug instead.
- Sections get colour swatches (light tints) in the Design panel.
- Frames and sections get a handoff status (`devStatus`: ready for dev / completed) set from
  the panel and shown as a badge next to their name on the canvas; `node.get` reports it.

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

docs/mcp.md

@@ -98,7 +98,7 @@ Or in a project's `.mcp.json`:
 | `run_command {command, params}` | Run any command (e.g. `align.left`, `layout.add`, `component.create`, `instance.place` (drop an instance at a page point into the frame or auto layout slot under it), `component.exposeInstance` / `instance.exposed` (nested instance properties on instances), `inspect.code` (CSS, SwiftUI or Jetpack Compose for a layer), `style.create`, `variable.bind`, `proto.interaction.add`). |
 | `batch {commands: [{command, params}], label?}` | Several commands as one undo step (`command.batch`); all-or-nothing. |
 | `create_node {type, x, y, width, height, parent, index, name, text, path, props}` | Create a frame, rectangle, ellipse, polygon, star, line, arrow, text, vector, section, component or slice; returns `{id, node}`. |
-| `set_properties {ids, props}` | `node.set` on layers (geometry, fills, strokes, effects, corner radius, auto layout, sizing, constraints, masks (`isMask`, `maskType: alpha\|vector\|luminance`), text…); returns the updated layers. |
+| `set_properties {ids, props}` | `node.set` on layers (geometry, fills, strokes, effects, corner radius, auto layout, sizing, constraints, masks (`isMask`, `maskType: alpha\|vector\|luminance`), handoff status (`devStatus: none\|readyForDev\|completed`), text…); returns the updated layers. |
 | `inspect_document {depth, allPages}` | The document as JSON (layer tree, styles, selection, history). |
 | `get_node {id, depth}` | One layer as JSON. |
 | `select {ids}` | Replace the selection (`[]` deselects). |

docs/parity.md

@@ -1,8 +1,8 @@
 # Parity report
 
-Generated by `cargo xtask parity`: FigCraft commands registered for the incumbent's main menu and toolbar (337 commands in the engine).
+Generated by `cargo xtask parity`: FigCraft commands registered for the incumbent's main menu and toolbar (340 commands in the engine).
 
-**193 / 199 menu items (97.0%)**
+**194 / 200 menu items (97.0%)**
 
 ## Missing