Keep different ideas separate
Your workshop projects.
Name a project, keep its exact equipment and assumptions, and revisit the evidence without silently replacing anything.
Projects are saved only after an explicit action, in this browser on this origin. They are not uploaded, synchronized or included in analytics. Clearing browser storage can remove them. Use JSON exports for a portable copy.

Move a copy explicitly.
Import adds new project copies; it never overwrites an existing project. Up to 20 projects and 200KB of JSON can be stored. A setup-list export is also accepted. Imported prices/evidence are saved assumptions until checked against current exact IDs.
Clear local projects
This deletes only the project store for this review/site, leaving other preferences alone.
Start an exact setup list · Separate private ownership/maintenance binder · Current exact material-change notices · Print/share a source-linked handoff · Compare retained setup baskets · Compare configurations · Storage and privacy
Import a copy, keep the original
Existing project: An explicit local save retains exact equipment IDs, quantities and its dated source snapshot.
Imported copy: Import adds a new project ID and keeps imported evidence unverified until checked.
Private fields: Names, tasks, notes and manual lines belong to the local record; moving them requires deliberate export.
Original anonymous record illustration, not your stored data. It reads no storage and provides no account sync. Existing import, export, deletion and quota safeguards remain separate controls above.