* perf: use abbreviated metadata for minimumReleaseAge when possible
Instead of always fetching full package metadata when minimumReleaseAge
is set, fetch the smaller abbreviated document first and check the
top-level `modified` field. If the package was last modified before the
release age cutoff, all versions are mature and no per-version time
filtering is needed. Only re-fetch full metadata for the rare case of
recently-modified packages.
Also uses fs.stat() to check cache file mtime instead of reading and
parsing the JSON to check cachedAt, avoiding unnecessary I/O.
* fix: validate modified date and handle abbreviated metadata edge cases
- Validate meta.modified date to prevent invalid dates from bypassing
minimumReleaseAge filtering
- Skip full metadata refetch for packages excluded by publishedByExclude
- Allow ERR_PNPM_MISSING_TIME from cached abbreviated metadata to fall
through to the network fetch path instead of throwing
* fix: cache abbreviated metadata before re-fetching full metadata
Save the abbreviated metadata to disk before re-fetching full metadata
so subsequent runs benefit from the mtime cache fast-path.
* fix: resolve type narrowing for conditional metadata fetch result
Zoltan Kochan
968724fc0b