Reference placement and textured annotation acceptance

The local browser acceptance run exercises the mounted Author → Appearance dock, not a standalone component. A 512 × 512 asymmetric image is calibrated from two visible landmarks to a 2 m span and placed as an independent reference. An ordinary viewport pick selects its string reference identity without selecting an IFC entity (reference-pick.json).

The library's Save into model creates IfcAnnotation owner 65 in the loaded IFC model, with an explicit Name and spatial container. created.json records the selected owner and its texture/UVs. Undo removes the annotation geometry and clears its selection while retaining the independent reference (undo.json); Redo restores the annotation and its captured image (redo.json).

Normal IFC + images export produces an IFCZIP containing the original image asset. A fresh normal load renders the annotation textured (reopen-before-pick.png). An ordinary viewport pick selects the reopened IfcAnnotation owner 65 (reopened-selected.png, reopened-verified.json). The digest-named image is f2be22cb22f33a21bd40eab8b3da5c2df4f537841687f58af746413a9c172203. The generated IFCZIP is intentionally not committed as a binary test fixture.

These artifacts cover this image/reference/annotation workflow. They do not claim portable independent-reference image packaging, editing an existing reference's calibration through the dock, shared-room reference synchronization, or the later scan reconstruction stages.

Verified source: 8a39083d09ddff0298d006ea942f9723b4ada95c. WASM SHA-256: 0ce999541e528f3b7593941f501f483bf87d9d444340328eb37ef8a7ea83d545. The final run explicitly asserts Undo clears selection, then exports and freshly reopens the resulting archive before the ordinary annotation pick.

An additional independent IfcOpenShell 0.8.2 check is recorded in independent-ifc-reader.json. verify-export.py validates the actual exported IFCZIP using full EXPRESS rules, its native geometry engine, independent IFC placement/unit resolution, indexed UV-to-world-corner association, and archived image digest. This artifact passed with zero schema errors and zero corner error. The rotated/cropped PDF and fresh-room extension is documented in reference PDF acceptance.