gsd-import

<objective> Import external plan files into the GSD planning system with conflict detection against PROJECT.md decisions. - **--from**: Import an external plan file, detect conflicts, write as GSD PLAN.md, validate via gsd-plan-checker. - **--from-gsd2**: Reverse-migrate a GSD-2 project (`.gsd/` directory) back to GSD v1 (`.planning/`) format. Runs `gsd-tools.cjs from-gsd2`. Pass `--path <dir>` to migrate a project at a different path. </objective> <execution_context> @~/.claude/gsd-core/workflows/import.md @~/.claude/gsd-core/references/ui-brand.md @~/.claude/gsd-core/references/gate-prompts.md @~/.claude/gsd-core/references/doc-conflict-engine.md </execution_context> <context> $ARGUMENTS </context> <process> If `--from-gsd2` is in $ARGUMENTS: Run the reverse-migration (append `--path <dir>` if provided): ```bash _GSD_SHIM_NAME="gsd-tools.cjs"; _GSD_RUNTIME_ROOT="${RUNTIME_DIR:-$(git rev-parse --show-toplevel 2>/dev/null || pwd)}"; GSD_TOOLS="${_GSD_RUNTIME_ROOT}/gsd-core/bin/${_GSD_SHIM_NAME}"; if [ -f "$GSD_TOOLS" ]; then gsd_run() { node "$GSD_TOOLS" "$@"; }; elif [ -f "${_GSD_RUNTIME_ROOT}/.claude/gsd-core/bin/${_GSD_SHIM_NAME}" ]; then GSD_TOOLS="${_GSD_RUNTIME_ROOT}/.claude/gsd-core/bin/${_GSD_SHIM_NAME}"; gsd_run() { node "$GSD_TOOLS" "$@"; }; elif command -v gsd-tools >/dev/null 2>&1; then GSD_TOOLS="$(command -v gsd-tools)"; gsd_run() { "$GSD_TOOLS" "$@"; }; elif [ -f "$HOME/.claude/gsd-core/bin/${_GSD_SHIM_NAME}" ]; then GSD_TOOLS="$HOME/.claude/gsd-core/bin/${...