REFACTOR-114: Refactor main module

[grafviktor]

[codecov[bot]]

Codecov Report

:x: Patch coverage is 86.18785% with 50 lines in your changes missing coverage. Please review. :white_check_mark: Project coverage is 87.06%. Comparing base (32426e3) to head (f6ed1eb). :warning: Report is 1 commits behind head on feature/114.

Files with missing lines	Patch %	Lines
internal/state/state.go	81.74%	18 Missing and 5 partials :warning:
internal/app/app.go	75.00%	7 Missing and 2 partials :warning:
internal/config/config.go	89.77%	6 Missing and 3 partials :warning:
internal/ui/theme/loader.go	86.20%	4 Missing :warning:
internal/utils/utils.go	92.30%	3 Missing and 1 partial :warning:
internal/ui/model.go	50.00%	1 Missing :warning:

Additional details and impacted files

@@               Coverage Diff               @@
##           feature/114     #116      +/-   ##
===============================================
+ Coverage        85.91%   87.06%   +1.15%     
===============================================
  Files               38       40       +2     
  Lines             3138     3379     +241     
===============================================
+ Hits              2696     2942     +246     
+ Misses             368      356      -12     
- Partials            74       81       +7     

Flag	Coverage Δ
go-1.22.x	86.97% <86.18%> (+1.06%)	:arrow_up:
go-1.25.x	87.06% <86.18%> (+1.15%)	:arrow_up:
macOS	86.55% <85.35%> (+0.78%)	:arrow_up:
ubuntu	86.55% <85.35%> (+0.88%)	:arrow_up:
unit	87.06% <86.18%> (+1.15%)	:arrow_up:
windows	84.82% <81.76%> (+0.91%)	:arrow_up:

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