ai-flow /learn: dictated learning

[d3mlabs-ai-flow]

Draft learning(s) captured from #75 (#75).

Requested by @JPDuchesne.

the root cause here, not the code change: rbenv-built rubies with a Homebrew lib dir rpathed ahead of their own libdir get their libruby hijacked by a same-minor brew Ruby (shared soname libruby.so.X.Y), so the binary silently runs as the other version — bundler then fails the Gemfile ruby pin with a mismatch that looks like a project bug. Diagnosis cue: command -v ruby resolves to the right binstub but ruby -v reports another version. Only bites Linux (macOS dyld links libruby by absolute install name).

learned-from: #75 (dictated)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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