fix: improve how buckets are managed in the store

[jahvon]

Various refactors/fixes that aims to make working with the store cleaner

[codecov]

Codecov Report

Attention: Patch coverage is 54.70085% with 53 lines in your changes missing coverage. Please review.

Project coverage is 37.50%. Comparing base (4ab1e10) to head (b2ea4ab).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
internal/services/store/store.go	61.11%	26 Missing and 9 partials ⚠️
cmd/internal/store.go	35.00%	8 Missing and 5 partials ⚠️
cmd/internal/exec.go	28.57%	2 Missing and 3 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #196      +/-   ##
==========================================
+ Coverage   37.47%   37.50%   +0.02%     
==========================================
  Files          76       76              
  Lines        6348     6415      +67     
==========================================
+ Hits         2379     2406      +27     
- Misses       3535     3562      +27     
- Partials      434      447      +13     

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