pub fn store_cache_at(
path: &Path,
cache: &McpDescriptorCache,
) -> Result<(), DescriptorCacheError>Expand description
Atomically persist a descriptor cache with private-filesystem policy
(spec §5.4): parent directory ensured 0700, temp file created
create_new at mode 0600 (never create-then-chmod), then renamed over
the target; symlinks at the target are refused typed. Used to
seed/maintain operator-local state (and by tests); this task adds no
production writer fed from live server responses.