TE-004: createUploadController performed three inject() calls, an effect()
registration and a window listener before returning, so the real policy
buried inside it — deciding per file whether to reject or start an upload —
was reachable only through a TestBed. planFileSelection in upload.machine.ts
is now that decision as a pure function taking plain {name, type, size}
objects; the controller executes the plan and keeps the one impure step
(crypto.randomUUID()) it can't move. No change to the controller's public
surface.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
# Conflicts:
# docs/project/refactor-backlog-setup/refactor-backlog/99-backlog.md
# libs/shared/docs/behaviour-spec.mdx