Prepare and publish base-bash-libs v2.0.0 from current main.\n\nScope:\n- Release the public API changes since v1.0.0, including in-place string helpers, stricter cleanup path and indexed-array contracts, std_run timeout/retry policy, arg/list helpers, and the standalone base-bash launcher.\n- Update VERSION, CHANGELOG.md, and README release metadata.\n- Publish the GitHub release and update the Homebrew tap so brew installs the base-bash launcher.\n\nOut of scope:\n- Issue #93 ShellCheck warning-profile work remains a separate CI hardening follow-up.
Prepare and publish base-bash-libs v2.0.0 from current main.\n\nScope:\n- Release the public API changes since v1.0.0, including in-place string helpers, stricter cleanup path and indexed-array contracts, std_run timeout/retry policy, arg/list helpers, and the standalone base-bash launcher.\n- Update VERSION, CHANGELOG.md, and README release metadata.\n- Publish the GitHub release and update the Homebrew tap so brew installs the base-bash launcher.\n\nOut of scope:\n- Issue #93 ShellCheck warning-profile work remains a separate CI hardening follow-up.