Independent synthetic draft-origin state. Modify/reuse permitted.
Run python test_origin.py; python run_examples.py. Standard library only.
No localStorage, actual URL navigation, browser focus, server or durable save/delete. Stored draft is a caller-supplied in-memory value.
Explicit version-1 storage fields and one allowlisted preset. Unknown/duplicate query keys fail. Current input, saved value and example origin remain separate.
Explicit load/reset/preset checks the local revision before replacing input; this is not a server authorization or persistence conflict protocol.
Draft fields are bounded text, not proof of numerically valid measurements. Calculation validation is separate. Examples contain no actual personal information.
