Add tests to verify e2e analyze caching behavior

[rfbgo]

This augments the existing tests by representing hte e2e workflow

[gemini-code-assist]

Code Review

This pull request adds a new test suite in test_workspace_analyze.py to verify workspace analysis features, including FOM filtering and results caching. The review feedback recommends replacing time.sleep calls with explicit timestamp modifications using os.utime to prevent test flakiness on slow CI environments and low-resolution filesystems, which also allows for the removal of the unused time module import.

[rfbgo]

/gemini review

[gemini-code-assist]

Code Review

This pull request adds a new test suite test_workspace_analyze.py to verify workspace analysis filtering and results caching behavior, including cache invalidation scenarios. The review feedback suggests improving the robustness of the cache invalidation tests by setting the cache file's timestamp to the past rather than setting the log file's timestamp to a future time, which can be flaky depending on filesystem precision.

[ramble-pr-bot]

Ramble Performance Test Metrics

Results produced with commit: 5523be2

Test Name	Outcome	Duration (s)	Most Recent Run (s)	Last 5 Avg (s)
test_analyze_large_file	passed	2.1459	2.0856 (b311f41)	2.0701
test_large_template_expansion	passed	1.2265	1.2188 (b311f41)	1.1978
test_many_experiments	passed	25.2388	25.3640 (b311f41)	24.4371
test_many_objects_defaults	passed	13.3748	13.6953 (b311f41)	12.7329
test_matrix_filter_perf	passed	1.1188	1.1669 (b311f41)	1.1093

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.09%. Comparing base (b311f41) to head (5523be2).

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1755      +/-   ##
===========================================
+ Coverage    94.07%   94.09%   +0.01%     
===========================================
  Files          370      371       +1     
  Lines        37424    37517      +93     
===========================================
+ Hits         35207    35301      +94     
+ Misses        2217     2216       -1     

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