make daemons error human readable + no longer use sha1 for random names

[shikokuchuo]

Prework

• [x] I understand and agree to the Contributor Code of Conduct.
• [x] I have already submitted a discussion topic or issue to discuss my idea with the maintainer.

Related GitHub issues and pull requests

• Ref: #129

Summary

PR to make the daemons error less cryptic. At the same time, now nanonext >= 0.10.1 is on CRAN, removes sha1() in generating the random names.

[codecov-commenter]

Codecov Report

All modified lines are covered by tests :white_check_mark:

Comparison is base (42e0d8e) 100.00% compared to head (bc7d6bd) 100.00%.

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #130 +/- ## ========================================= Coverage 100.00% 100.00% ========================================= Files 23 23 Lines 1494 1494 ========================================= Hits 1494 1494 ``` | [Files](https://app.codecov.io/gh/wlandau/crew/pull/130?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Will+Landau) | Coverage Δ | | |---|---|---| | [R/crew\_random\_name.R](https://app.codecov.io/gh/wlandau/crew/pull/130?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Will+Landau#diff-Ui9jcmV3X3JhbmRvbV9uYW1lLlI=) | `100.00% <100.00%> (ø)` | | | [R/utils\_mirai.R](https://app.codecov.io/gh/wlandau/crew/pull/130?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Will+Landau#diff-Ui91dGlsc19taXJhaS5S) | `100.00% <100.00%> (ø)` | |

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[shikokuchuo]

ready to merge

[wlandau]

Thanks