Move the build git SHA display value into codex-utils-cli so codex --version, TUI headers, status lines, and status cards render the same version string.
(cherry picked from commit 9eeaac2f278e7babd768c1818aeb8f95e0022ebf)
(cherry picked from commit 97e4866de8026afdbe9f40c8fadf294d422b27df)