fix: codecov flux

[soulbird]

sleep 3 seconds after write channel to fix codecov flux

[codecov-commenter]

Codecov Report

Merging #44 (b1a7bc8) into main (a05b55d) will increase coverage by 0.70%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main      #44      +/-   ##
==========================================
+ Coverage   62.02%   62.73%   +0.70%     
==========================================
  Files          16       16              
  Lines        1127     1127              
==========================================
+ Hits          699      707       +8     
+ Misses        364      356       -8     
  Partials       64       64              

Impacted Files	Coverage Δ
internal/core/components/watcher.go	79.34% <0.00%> (+8.69%)	⬆️

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