fix: fix ExecuteGc using incorrect expire time

[dl239]

close #3935

[Copilot]

Pull Request Overview

This PR fixes a bug in the GC (Garbage Collection) implementation for multi-index TTL handling and adds test coverage for the fix. The bug was that GcAllType was using the raw abs_ttl value directly instead of calculating the correct expire_time by subtracting it from the current time (with offset).

• Corrected expire_time calculation in GcAllType method to match the pattern used in single-TTL ExecuteGc
• Added a new test TestGcAllType to validate GC behavior with multiple timestamp indices and different TTL values
• Added debug logging to track GC operations on keys

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
src/storage/segment.cc	Fixed expire_time calculation in GcAllType method for all TTL types (kAbsoluteTime, kAbsAndLat, kAbsOrLat) by properly computing cur_time - ttl_offset_ - abs_ttl instead of using abs_ttl directly
src/storage/segment_test.cc	Added comprehensive test case for GC with multiple timestamp indices to verify the corrected expire_time logic works properly with different TTL configurations

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[github-actions]

SDK Test Report

102 files  102 suites   2m 8s ⏱️
359 tests 345 ✅ 14 💤 0 ❌
487 runs  473 ✅ 14 💤 0 ❌

Results for commit 806b927.

[codecov]

Codecov Report

❌ Patch coverage is 89.85507% with 7 lines in your changes missing coverage. Please review.
✅ Project coverage is 75.33%. Comparing base (2ee066e) to head (806b927).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
src/storage/segment_test.cc	89.47%	6 Missing ⚠️
src/storage/segment.cc	91.66%	1 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##               main    #4057       +/-   ##
=============================================
+ Coverage     41.61%   75.33%   +33.71%     
  Complexity      711      711               
=============================================
  Files           196      763      +567     
  Lines         11789   143666   +131877     
  Branches       1538     2076      +538     
=============================================
+ Hits           4906   108225   +103319     
- Misses         6580    35138    +28558     
  Partials        303      303               

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[github-actions]

Linux Test Report

    60 files     253 suites   1h 54m 5s ⏱️
13 630 tests 13 623 ✅ 7 💤 0 ❌
19 352 runs  19 345 ✅ 7 💤 0 ❌

Results for commit 806b927.