Maintain the token source

Load paper-ds-canvas and ../paper-ds-manage/references/versioning.md. Read the manifest's source authority and token snapshot before comparing values.

Choose the direction

• sync: the selected source is authoritative; read code or Figma and update Paper.
• pull: the user explicitly wants Paper's proposed values written back into source.
• generate: no system exists; propose a set and get approval before writing it.

Do not overwrite Paper edits merely because code differs. If both changed since the last snapshot, show the conflict and ask which value wins.