Redesign the markdown edit-history store from content-hashed blobs +
log.jsonl to one self-describing file per save:
.history/<stem>/<ts>-<email>.<ext>
The filename IS the audit (colon-free UTC timestamp valid on SMB/Azure
Files + the authoring email); listing the directory is the history. No
sidecar log, no hashing. A byte-identical save is a no-op; a pre-existing
file lazy-seeds its current bytes (author "unknown", stamped at mtime).
Reverting copies an old snapshot back (records as a fresh save). Snapshots
are kept forever.
Fixes the 404 reading history: reads no longer require history to be
*currently* enabled — ServeTextHistory serves whatever .history/<stem>/
exists (empty list when none); the dispatch drops the EffectiveHistory
gate for reads. WRITES stay gated by the history: flag. (The 404 came from
the aggregator refactor turning history off on project-level working/,
which made already-recorded snapshots unreadable.)
Renames: an in-place rename carries .history/<stem>/ to the new name
(serveFileMove); a cross-dir move leaves it behind.
Defaults: history: true now ships on the three live-editing slots —
working, mdl, rsk — at both the project-level nodes and the per-party
folders. It's a .zddc cascade key, so operators override per project.
Records (.yaml in mdl/rsk) keep their separate record-history path.
Browse history viewer updated to the filename-based version id (id ←
sha). Tests rewritten for the per-file scheme + rename behavior + SMB-safe
names; HistoryAt defaults test updated.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Adds a "History…" context-menu item on markdown files in a history:true
subtree (server mode only — the audit is server-stamped). It opens a modal
that lists every saved version newest-first (timestamp + author + size,
current flagged), lets you View any version, Diff any two, and Restore one
(a forward PUT — non-destructive).
- shared/diff.js: dependency-free line/word LCS diff (window.zddc.diff),
prefix/suffix trimming + a cell cap so large files don't stall the UI.
- browse/js/history.js: the modal (list / view / diff / restore), talking to
GET <url>?history=1 and ?history=<sha>.
- loader.js carries the per-file history flag; events.js adds the menu item.
- Wired diff.js + history.js + history.css into browse/build.sh; diff.js into
the zddc-test.html shim. tests/diff.spec.js covers the diff algorithm.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
