Treat directory/file shape as part of each peer manifest vote and reject
portable aliases before aggregating descriptors. This keeps majority selection
deterministic and avoids collapsing conflicting entries that share a path or
size.
This preserves the previously staged consensus hardening before the protocol-8
catalog-authority cutover layered in the working tree.
Test Plan:
- `git diff --cached --check` -- passed
ddidderr
36c4785775