[feat][backend]: ob get trace refactor

[kidkidkid]

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[codecov]

Codecov Report

❌ Patch coverage is 87.17949% with 10 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
...ackend/modules/observability/infra/config/trace.go	43.75%	6 Missing and 3 partials ⚠️
backend/modules/observability/infra/rpc/tag/tag.go	0.00%	1 Missing ⚠️

@@            Coverage Diff             @@
##             main     #276      +/-   ##
==========================================
- Coverage   68.01%   68.01%   -0.01%     
==========================================
  Files         568      568              
  Lines       50478    50502      +24     
==========================================
+ Hits        34335    34351      +16     
- Misses      13473    13479       +6     
- Partials     2670     2672       +2     

Flag	Coverage Δ
unittests	68.01% <87.17%> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
backend/modules/observability/application/trace.go	69.87% <100.00%> (+0.45%)	⬆️
...n/trace/service/trace/span_filter/prompt_filter.go	94.54% <100.00%> (-0.29%)	⬇️
...service/trace/span_processor/platform_processor.go	75.00% <100.00%> (-1.93%)	⬇️
backend/modules/observability/infra/rpc/tag/tag.go	0.00% <0.00%> (ø)
...ackend/modules/observability/infra/config/trace.go	87.27% <43.75%> (-7.52%)	⬇️

... and 3 files with indirect coverage changes

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[CozeLoop]

Aime Review: Identified 1 Must-Fix and several Should-Fix/Suggestions in concurrency and configuration handling. Please see inline comments for details.