Overwriting the file with zeros only helps on filesystems that write in place, and a crash mid-overwrite left a corrupt key file that needed a rename and cleanup step to avoid failing later starts. Remove the file instead, and drop util.EraseFile and the .erasing rename.

A record and its state proof keys reach the registry in separate transactions. If the second failed or the node crashed in between, the next start found the record already present, skipped the file, and with the file now erased after import, its only copy of the state proof keys was gone. Import the keys from the file when the registry record lacks them.

A crash while an imported file was being overwritten left a zero-filled .partkey file that sqlite rejects as not a database, which failed every later start. Rename the file to *.partkey.erasing before overwriting it, and erase any such leftover at startup.

Formatting a byte slice or array with %v prints one decimal number per
byte, such as "[167 190 112 ...]". Digests, seeds, VRF proofs and
voting keys in error and panic messages now print as hex instead.

Each value is passed as a plain []byte, either sliced or converted, so
fmt takes its fast path rather than reflecting over a named type.
StateProof.String also drops its strings.Builder helper.

Apple M2 Pro, fmt.Sprintf of one value:

  StateProof.String        2926ns, 71 allocs -> 230ns, 4 allocs
  Seed [32]byte            1101ns -> 94ns (196ns with %x on Seed)
  VrfProof [80]byte        2607ns -> 162ns (381ns with %x on VrfProof)
  GenericDigest (32 bytes) 1392ns, 34 allocs -> 93ns, 2 allocs

Co-authored-by: cce <51567+cce@users.noreply.github.com>

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Bumps [gradle-wrapper](https://github.com/gradle/gradle) from 9.8.1 to 9.8.2.
- [Release notes](https://github.com/gradle/gradle/releases)
- [Commits](https://github.com/gradle/gradle/compare/v9.8.1...v9.8.2)

---
updated-dependencies:
- dependency-name: gradle-wrapper
  dependency-version: 9.8.2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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