Upload File

This route is the dedicated canonical render surface for `UploadFile`. Use the canonical launcher for ref selection; feature code owns upload transport and asset policy.

Matched canonical: Resolving canonical reference...
Viewing circumstances: Loading width, direction, and magnification...
Child state: Loading upload state...
Viewport contract: Loading viewport contract...
Review note: Loading review note...
Renderer: renderFormUploadField()
Controller: initializeFormUploadFields()
Status API: setFormUploadState()

Interactive Preview

Upload Field

Canonical state loading from the URL.

Parent Framing

Upload Hosted Field

Parent-owned label, helper text, and error copy stay outside the child seam.

Upload file

CSV, PNG, or PDF assets can be attached before publishing. Upload failed. Check the file type and try again.