assign a unique identifier to each zettel

[icornelius]

Currently zetteln have no unique identifier other than their path. Zetteln created with --name timestamp have a unique numerical string in the filename (because timestamp is printed in the format YYYYMMDDHHMMSS) and this string can be called with zfind, providing queries guaranteed to return a single file. But filenames lacking the 14-digit timestamp can be more difficult to call uniquely with zfind queries.

Publication workflows and cross-references between notes would be easier if zettel were configured to generate a uuid for each new document and write the uuid to the metadata block. Ideally, there would also be an option to retroactively add uuids to documents lacking them.

[icornelius]

timestamp is adequate, for now. The main drawback is the length of the character string.