--- type: Changed pr: 802 --- Retire the installer's one-off runtime directory helpers (`getGlobalDir`/`getOpencodeGlobalDir`/`getKiloGlobalDir`) and consolidate per-runtime global config-dir resolution onto the single canonical projection `runtime-homes:getGlobalConfigDir`, extended with the `--config-dir` override and the opencode/kilo `*_CONFIG` file-path precedence. Behavior-preserving across all 15 install runtimes. (#56)