refactor: log errors at creation site

[Shadow53]

Resolves #95.

The primary purpose of this branch is to make sure errors are reported at the creation site (or where they enter this crate's code).

There are a couple logic fixes that got applied too, though, as part of this,

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[codecov]

Codecov Report

Merging #133 (69df08e) into main (4e63b69) will decrease coverage by 0.86%.
The diff coverage is 74.77%.

❗ Current head 69df08e differs from pull request most recent head 3754b8f. Consider uploading reports for the commit 3754b8f to get more accurate results

@@            Coverage Diff             @@
##             main     #133      +/-   ##
==========================================
- Coverage   91.51%   90.65%   -0.87%     
==========================================
  Files          71       71              
  Lines        6246     5691     -555     
==========================================
- Hits         5716     5159     -557     
- Misses        530      532       +2     

Impacted Files	Coverage Δ
src/command/edit.rs	0.00% <0.00%> (ø)
src/hoard/iter/all_files.rs	88.61% <26.92%> (-0.60%)	⬇️
src/config/builder/envtrie.rs	86.36% <60.00%> (+3.40%)	⬆️
src/hoard_item/cached.rs	77.00% <66.66%> (-1.58%)	⬇️
src/lib.rs	68.00% <66.66%> (-32.00%)	⬇️
src/hoard/iter/diff_files.rs	90.84% <68.18%> (-8.43%)	⬇️
src/checkers/history/operation/util.rs	91.91% <72.72%> (-7.47%)	⬇️
src/dirs/unix.rs	76.92% <72.72%> (-23.08%)	⬇️
src/config/builder/mod.rs	70.67% <75.00%> (-8.85%)	⬇️
src/config/mod.rs	80.85% <75.00%> (-6.43%)	⬇️
... and 69 more

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