Task Completion

Prefer focused tests while iterating, then run broader gates when practical.
Standard finish gates: nix develop -c mix test, nix develop -c mix compile --warnings-as-errors, nix develop -c mix credo --strict, and nix develop -c mix format --check-formatted.
Run nix develop -c mix format before committing Elixir changes if formatting may have changed.
For live runtime/debug claims, verify with bin/rpc diagnostics rather than inferring from source.

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