promote simple tests to prefer ramble workspace manage

[rfbgo]

No description provided.

[gemini-code-assist]

Code Review

This pull request refactors various unit and end-to-end tests to align with updated guidelines in AGENTS.md. It replaces manual YAML configuration writing and the deprecated generate-config command with the workspace manage experiments subcommand, and updates deprecated -p flags to -V package_manager=. The feedback suggests combining redundant workspace command invocations in test_workspace_info_with_where_filter into a single call with multiple --wf options to simplify the test code and improve execution efficiency.

[ramble-pr-bot]

Ramble Performance Test Metrics

Results produced with commit: 093f830

Test Name	Outcome	Duration (s)	Most Recent Run (s)	Last 5 Avg (s)
test_analyze_large_file	passed	2.0829	2.0792 (68681d4)	2.0969
test_large_template_expansion	passed	1.2125	1.1981 (68681d4)	1.5081
test_many_experiments	passed	24.8078	24.4462 (68681d4)	25.0302
test_many_objects_defaults	passed	14.3726	13.1446 (68681d4)	13.9296
test_matrix_filter_perf	passed	1.1366	1.0867 (68681d4)	1.1523

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.01%. Comparing base (68681d4) to head (093f830).

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1732      +/-   ##
===========================================
- Coverage    94.01%   94.01%   -0.01%     
===========================================
  Files          367      367              
  Lines        36886    36884       -2     
===========================================
- Hits         34679    34676       -3     
- Misses        2207     2208       +1     

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