Feature/channel mapping resolution dim

[tombonfert]

Summary

Changes

Test Plan

• Unit tests added/updated
• Manual testing completed
• Documentation updated (if applicable)

Checklist

• Code follows project style guidelines
• Self-review completed
• No new linter warnings introduced

[codecov]

Codecov Report

❌ Patch coverage is 91.30435% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 86.32%. Comparing base (76e566f) to head (e95ffeb).

Files with missing lines	Patch %	Lines
src/impulse_reporting/persist/report_storage.py	84.21%	2 Missing and 1 partial ⚠️
..._engine/analyze/metadata/time_series_expression.py	87.50%	1 Missing and 1 partial ⚠️
src/impulse_reporting/meta/container_dimensions.py	91.66%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #39      +/-   ##
==========================================
+ Coverage   86.25%   86.32%   +0.06%     
==========================================
  Files          52       52              
  Lines        4168     4218      +50     
  Branches      500      506       +6     
==========================================
+ Hits         3595     3641      +46     
- Misses        477      479       +2     
- Partials       96       98       +2     

Files with missing lines	Coverage Δ
...mpulse_query_engine/analyze/query/query_builder.py	87.77% <100.00%> (+0.27%)	⬆️
...ne/analyze/query/solvers/key_value_store_solver.py	92.92% <100.00%> (+0.16%)	⬆️
...query_engine/analyze/query/solvers/query_solver.py	85.71% <ø> (ø)
src/impulse_reporting/core/report.py	89.12% <100.00%> (+0.38%)	⬆️
src/impulse_reporting/meta/container_dimensions.py	97.05% <91.66%> (-2.95%)	⬇️
..._engine/analyze/metadata/time_series_expression.py	74.26% <87.50%> (+0.57%)	⬆️
src/impulse_reporting/persist/report_storage.py	84.56% <84.21%> (-0.05%)	⬇️

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