Two test fixes uncovered by the full-suite run:
1. composer_history tests were using a module-local mutex to serialize
their HOME env mutation, but other tests in the workspace (config,
commands::restore, etc.) ALSO mutate HOME without that lock. Switch
to the crate-wide `test_support::lock_test_env()` so all HOME-
mutating tests share one mutex.
2. The `prompts::tests::rlm_first_class_guidance_present` test was
pinning the OLD "RLM Is First-Class" framing that #358 deliberately
reframed as "RLM Is a Specialty Tool". Renamed the test to
`rlm_specialty_tool_guidance_present` and updated the assertions to
guard the new framing — so a future encouraging-language regression
lights up CI.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Hunter Bown
b678058ff0