New helper pair:
- ResolveCanonicalPath(fsRoot, target) — case-fold path resolution, no side effects
- EnsureCanonicalAncestors(fsRoot, target, email…) — case-fold + MkdirAll + auto-own .zddc seeding
For each canonical position along the requested path the helpers
substitute on-disk casing (so /Project/working/foo lands in an existing
Working/ rather than a new sibling) and materialise missing
working/staging/archive/<party>/{mdl,incoming,received,issued}/ folders.
working/, staging/, and archive/<party>/incoming/ get a creator-owned
.zddc seeded automatically; received/, issued/, and mdl/ are created
without auto-own (WORM and data-store concerns respectively).
reviewing/ is rejected — purely virtual, never on disk.
Wired into the file API:
- serveFilePut — resolve before auth, ensure after auth
- serveFileMkdir — resolve before auth, ensure after auth, with
two auto-own checks (target-is-canonical OR
parent-is-canonical)
- serveFileMove (POST) — resolve src+dst, ensure dst before rename so
a move from working/<draft> →
archive/<recipient>/issued/<draft> creates
the per-party folders on the way in
7 new unit tests in zddc/internal/zddc/ensure_test.go cover lazy
creation, case-fold reuse, per-party incoming auto-own, WORM no-auto-own,
empty-principal skip, reviewing rejection, and traversal rejection.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
ZDDC
a79cfd2f88