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Brandon ThomasandClaude Opus 5.5
cbebabccad
main added Op::SetBrowsed, Catalog.browsed and Photo.local_baseline while
the snapshot still said version 1, so v0.2.0 read such a library in part
(unknown ops as log damage, unknown fields dropped on its next snapshot).
- journal::VERSION = 2 (now public), with a format table and rules in the
journal docs; a test with an exhaustive match over Op makes adding a
variant fail until it is assigned a version.
- Journal::open reads the snapshot header first and refuses a newer
version with CatalogError::Newer ("written by a newer version of
LightCraft"), even when its catalog wouldn't parse.
- A log record whose CRC matches but whose op doesn't parse is "newer",
not damage or a torn tail: refused before any file is modified.
- Opening an older (or snapshot-less) library writes a snapshot in this
format before anything is appended (LoadReport::upgraded_from); a new
library gets one at once, so v0.2.0 refuses it instead of reading a bare
log.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>