ocs_doc_api: Phase 5 typed raster image create

- CreateRasterImage(RasterImageSpec) op (append-only).
- backend add_raster_image (RasterImage with file_path/insertion/u/v/size; the
  scene auto-registers the ImageDefinition on add_entity).
- facade create_raster_image; spec RasterImage constructor; api_reference +
  binding_schema regenerated; mocks + baseline.
- Test phase5_create_raster_image_registers_definition (asserts definition_handle
  auto-registered + 4-corner bounds) -> 610 host lib + 3 consistency green.
- Phase 5 complete.

crates/ocs_doc_api/src/gen/api_reference.md

@@ -165,7 +165,11 @@ Paper-space viewport: a width×height window at center looking at view_target wi
 
 ## `Entity` (acadrust `RasterImage`, collection `entities`)
 
-Raster image (read-mostly): GetEntity kind + coarse bounds (insertion + u*width + v*height); generic delete. No typed create in v1.
+Raster image: create_raster_image(file_path, insertion, u, v, size) places an image (host auto-registers the ImageDefinition); bounds (4-corner bracket); delete.
+
+### Constructors (`doc.entities()`)
+
+- **create_raster_image**(`file_path: &str, insertion_point: [f64; 3], u_vector: [f64; 3], v_vector: [f64; 3], size: [f64; 2]`) -> `Entity`
 
 ## `Entity` (acadrust `Table`, collection `entities`)
 

crates/ocs_doc_api/src/gen/ops_gen.rs

@@ -7,7 +7,7 @@
 use serde::{Deserialize, Serialize};
 
 use crate::id::ObjectId;
-use crate::ops::{BoolOp, Curve2Spec, DimensionSpec, EntitySpec, HatchSpec, InsertSpec, MTextSpec, PlacementSpec, SolidPrimitive, TextSpec, ViewportSpec};
+use crate::ops::{BoolOp, Curve2Spec, DimensionSpec, EntitySpec, HatchSpec, InsertSpec, MTextSpec, PlacementSpec, RasterImageSpec, SolidPrimitive, TextSpec, ViewportSpec};
 
 /// A typed write operation (plan §5). Each variant is ONE atomic host call = one
 /// undo step. Append new variants at the END only.
@@ -44,4 +44,6 @@ pub enum Operation {
     SetAttribute { id: ObjectId, tag: String, value: String },
     // viewport view
     SetViewportView { id: ObjectId, view_target: [f64; 3], view_height: f64 },
+    // media
+    CreateRasterImage(RasterImageSpec),
 }